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  • 098孤荷凌寒自学第184天区块链098天Dapp053

    孤荷凌寒自学第184天区块链098天Dapp053

    【主要内容】

    今天继续学习实战,继续完成一个菠菜类的DU大小的智能合约。共耗时34分钟。

    (此外整理作笔记花费了约21分钟)

    详细学习过程见文末学习过程屏幕录像。

     

    【重新测试开奖,开奖成功,但智能合约不派发奖金给获奖节点】

    测试结果 与第一次测试合约一模一样,没有找到具体原因。

    最开始怀疑solidity的表达式的运算顺序是不是真的从右到左,就怀疑到以下语句:

     bool isda = saizi>=3; //于是这里的3,实际是4

    但经过验证,isda在本次开奖数字为5的情况 上,得到 的bool值为true。说明运算顺序真的是从右到左的。

    后来一想,总之 Isdao会得到一个布尔值,那实际上这儿的怀疑没有任何道理 。

     

    目前思考是不清楚奖金的计算 是否有错误 ,不过根据自己手动计算来看,开奖后查询到的开奖结果的赔率是正确的,那么各下注赢了的节点 的奖金也就应当没有计算出错。

    只是想到合约中应当有两个数组用来登记最后一次开奖的获奖节点及对应的资金金额以供合约外查询。下一次要更改合约以达成此功能。

     

     

    【基本完成了dudaxiao.html页面】

    完成的代码如下:

    ```

    <!DOCTYPE html>

    <html>

    <head>

        <meta charset="UTF-8">

        <title>DU da xiao</title>

        <script language="javascript" type="text/javascript" src="jquery.min.js"></script>

        <script language="javascript" type="text/javascript" src="web3.min.js"></script>

        <!-- 1. Include cryptozombies_abi.js here -->

        <script language="javascript" type="text/javascript" src="dudaxiao_abi.js"></script>

     

        <script>

    // 格式化日期,如月、日、时、分、秒保证为2位数

    function formatNumber (n) {

        n = n.toString()

        return n[1] ? n : '0' + n;

    }

    // 参数number为毫秒时间戳,format为需要转换成的日期格式

    function formatTime (number, format) {

        let time = new Date(number)

        let newArr = []

        let formatArr = ['Y', 'M', 'D', 'h', 'm', 's']

        newArr.push(time.getFullYear())

        newArr.push(formatNumber(time.getMonth() + 1))

        newArr.push(formatNumber(time.getDate()))

     

        newArr.push(formatNumber(time.getHours()))

        newArr.push(formatNumber(time.getMinutes()))

        newArr.push(formatNumber(time.getSeconds()))

     

        for (let i in newArr) {

            format = format.replace(formatArr[i], newArr[i])

        }

        return format;

    }

     

                //声明一些钱包地址:

                //下面一行定义的是部署合约的节点(创世节点)的信息,公钥

                var wallet_address="0x5227C3EF48B5A1bcF784593e46D9579D26a3b592"; //狐狸钱包的公钥,就是钱包地址,是eth网络上的一个节点。

                //下面一行定义的是节点2的信息

                var w2add="0xe2d6c2f289c53B5aEA44C47293Ba179a3bfa21f0"; //公钥

        

                //下面一行定义的是节点3 的信息

                var w3add="0xb40599fB0366DCf0ffe86677b005b3f20Dfa29aE"; //公钥

        

                //下面一行定义的是节点4 的信息

                var w4add="0x70c8461366d5368B1E79CBFc2Acf4ba56C745977"; //公钥

        

        

       

                // 2. Start code here

                var cc;

                var web3;

     

                //var heyueAddress = "0x833Efb0B28AeD4C6510906fac12Deb60d98D1C23"; //这个合约地址不返回合约代币。要连接的众筹ico合约地址

                //var heyueAddress = "0xC5b33d4ca2Cf2dF9bCeD7491dFa791a9546bEE2c"; //这个合约地址是要返回ci代币的

                //var heyueAddress = "0xa0C369A8E08E5bD17401CC612d453f883cbDed16"; //这个合约是最后发布的ico众筹合约,事件广播完整

                //var heyueAddress = "0x794155739d9E18a0Ca9c133f99b11E467597D4EB"; //这个合约是保证返回的ci最后至少有一个ci

                //var heyueAddress='0xC56E6CcAC9b0fEc59eCbe18059d615690B0d740c';

                //var heyueAddress='0x7a2559F23E056F39e844a465600EB605C4E3AEaB';

                //var heyueAddress='0x673795F0fe831CDf3C09abed911c3933d60B6C66';

                //----下面是赌大小的合约地址

                //var heyueAddress='0x5798e6F6081a07ECaBd691Fc4fe50E666BeA577C';

                //var heyueAddress='0xB670AA4a9f737908541A0cCdA02d29c9cd71b4C5';

                var heyueAddress='0x079E450fC727f2F453ff840bFF1Ec9E2CCa78555';

                var heyueAddress='0x82AEc85CBe2584FFe287fb22Ce227429cc6d6415';

     

                function startApp() {

                    try {

                        $("#contractaddress").html(heyueAddress);

                        var ccc=web3.eth.contract(zongchouABI);

                        cc=ccc.at(heyueAddress); //https://www.cnblogs.com/tinyxiong/p/9046626.html

                        //cc =new web3.eth.contract(cryptozombiesABI, cryptoZombiesAddress); //如果是另一个版本可能还得加上new关键字。

                        $("#firstinfo").html("连接上合约!")

                        //alert(typeof cc);

                        web3.eth.getAccounts(function (err, accounts) {

                                if (accounts.length == 0) {

                                    $("#firstinfo").html("请检查钱包是否解锁");

                                }else{

                                    $("#accountsinfo").html("获取的默认钱包地址:" + web3.eth.defaultAccount);

                                    //getCurGift();

                                }

                            });

        

                    } catch (err) {

                        alert(err);

                    }

                    $("#firstinfo").html("加载成功");

                    

                }

        

                //async () => 

     

            //现在这种通过we3.min.js来加载钱包连接的方法,在metamask钱包和麦子钱包中都测试通过。

            window.addEventListener('load',function() {

            try{

                if (typeof web3 !== 'undefined') {

                    web3 = new Web3(web3.currentProvider);

                    startApp();

                } else {

                    //$('#app_loading').hide();

                    //alert(jQuery.i18n.prop('lrn_error_alert'));

                    //mathWallet.closePage();

                    alert("这儿没有钱包环境。");

                }

     

            }catch(err){

                alert(err);

            }

            });

     

        

                //----------------下面是自定义的与合约交互的函数-------------------------

                //--查询押大和押小各自的金额---

                function gettotal(){

                    try{

                        cc.allDuZhu(function(error, result){  //https://www.jianshu.com/p/15ff9da4dd8d

                        if(!error)

                        {

                            var da=result[0];

                            var xi=result[1];

                            var intda=da / (10**18);

                            var intxi=xi / (10**18); 

                            $("#total").html("目前押大金额:" + intda + " ether" + "押小金额:" + intxi + "总赌资:" + (intda + intxi));

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#total").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#total").html('正在获取。。。');

                    }catch(err){

                        $("#total").html('出错 :' + err);

                    }

                }

     

                //--查询总金额---

                function gettotal2(){

                    try{

                        cc.getContractBalance(function(error, result){  //https://www.jianshu.com/p/15ff9da4dd8d

                        if(!error)

                        {

                            var fln=result / (10**18);

     

                            $("#total2").html("合约地址代币余额:" + fln + " ether");

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#total2").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#total2").html('正在获取。。。');

                    }catch(err){

                        $("#total2").html('出错 :' + err);

                    }

                }

        

     

                //查询最后一次开奖记录

                function getEndTimeStamp(){

                    try{

                        cc.getKaiJiangInfo(function(error, result){

                            if(!error)

                        {

                            t=formatTime(result[0] * 1000,"Y-M-D h:m:s");

                            var r=result[1];//中奖号码

                            var fpl=result[2]; //赔率

                            $("#endtime").html("最后一次开奖时间:" + t + "开奖号码:" + r + "赔率" + fpl);

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#endtime").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#endtime").html('正在获取。。。');

                    }catch(err){

                        alert("使用授权代币转移时出错 :" + err)

                        return err;

                    }

                }

     

                //查询我自己的下注金额

                function myXiaZhuValue(){

                    try{

                        cc.myXiaZhuValue(function(error, result){

                        if(!error)

                        {

                            //result本身就是一个数组对象。

                            var da=result[0];

                            var xi=result[1];

                            var intda=da / (10**18);

                            var intxi=xi / (10**18); 

                            $("#alladdress").html("我目前参与押大金额:" + intda + " ether" + "押小金额:" + intxi + "总赌资:" + (intda + intxi));

                           //alert(result);

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#alladdress").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#alladdress").html('正在获取。。。');

                    }catch(err){

                        alert("查询所有已参与节点时出错:" + err)

                        return err;

                    }

                }

     

                //查询所有压大的节点与对应的金额

                function getallgiftandvalue(){

                    try {

                        cc.getallbigaddressandvalue(function(error, result){

                        if(!error)

                        {

                            //result本身就是一个数组对象。

                            //alert(result.length);

     

                            if(result.length>1){

                                var adds=result[0];

                                var vs=result[1];

                                //alert(adds.length);

                                //alert(vs.length);

                                var strls="";

                                var fln=0.0;

                                for(i=0;i<adds.length;i++){

                                    fln=(vs[i] - 0.0)/(10**18);

                                    strls=strls + "<br />" + adds[i] + " 压大:" + fln + "ether;";

                                }

                                $("#bigalladdressandvalue").html(strls);

                            }else{

                                $("#bigalladdressandvalue").html("获取到的结果不完整。")

                            }

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#bigalladdressandvalue").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#bigalladdressandvalue").html('正在获取。。。');

                    } catch (error) {

                        alert("在查询所有押大节点与对应下注金额对照关系时出错:" + error)

                    }

                }

     

                //查询所有压小的节点与对应的金额

                function getallgiftandvalue2(){

                    try {

                        cc.getallsmalladdressandvalue(function(error, result){

                        if(!error)

                        {

                            //result本身就是一个数组对象。

                            //alert(result.length);

     

                            if(result.length>1){

                                var adds=result[0];

                                var vs=result[1];

                                //alert(adds.length);

                                //alert(vs.length);

                                var strls="";

                                var fln=0.0;

                                for(i=0;i<adds.length;i++){

                                    fln=(vs[i] - 0.0)/(10**18);

                                    strls=strls + "<br />" + adds[i] + " 压小:" + fln + "ether;";

                                }

                                $("#smallalladdressandvalue").html(strls);

                            }else{

                                $("#smallalladdressandvalue").html("获取到的结果不完整。")

                            }

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#smallalladdressandvalue").html('获取出错:' + error);

                        }});

                        //return "ok"

                        $("#smallalladdressandvalue").html('正在获取。。。');

                    } catch (error) {

                        alert("在查询所有押大节点与对应下注金额对照关系时出错:" + error)

                    }

                }

                

     

                //查询指定节点地址的参与下注金额

                function getAddressGift(a){

                    try {

                        cc.getxiazhuvaluefrom(a,function(error, result){

                            if(!error)

                        {

                            //alert(result); 

                            var b=result[0];

                            var s=result[1];

                            var fb=b / (10**18);

                            var fs=s / (10**18);

                            $("#address").html("此节点赌大:" + fb + "ether" + "赌小:" + fs + "ehter,共下注:" + (fb + fs) + "ether.");

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#addresscount").html('获取出错:' + error);

                        }});

                        $("address").html('正在获取... ...');

                    } catch (error) {

                        alert("查询指定节点已众筹金额时出错 :" + error);

                        return error;

                    }

                }

     

                //---查询当前默认节点地址自己的参与众筹金额:

                function getCurGift(){

                    try {

                        cc.getGiftBalance(function(error, result){

                            if(!error)

                        {

                            //alert(result); 

                            var fln=result / (10**18);

                            $("#curinfo").html("共参与众筹:" + fln + "ether");

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#curinfo").html('具体参与金额获取出错:' + error);

                        }});

                        $("#curinfo").html('正在获取... ...');

     

                        //-------------------

                        cc.getgoal(function(error, result){

                            if(!error)

                        {

                            //alert(result); 

                            var fln=result / (10**18);

                            $("#goal").html("目标众筹总量:" + fln + "ether");

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#goal").html('获取目标众筹总量出错:' + error);

                        }});

                        $("#goal").html('正在获取... ...');




                    } catch (error) {

                        alert("查询当前节点已众筹金额时出错 :" + error);

                        return error;

                    }

                }

     

                //参与下注,这儿默认为赌大---

                function dodate(intvalue){

                    //alert(intvalue);

                    try{

                        web3.eth.getTransactionCount(web3.eth.defaultAccount,function(err,res){

                            if(!err){

                                //alert(res);

                                var message = {to:heyueAddress,value:web3.toWei(intvalue,'ether'),'chainId': 3,'gas': 300000,'gasPrice': web3.toWei('40', 'gwei'),'nonce': res};

                                //cc.donate(message,function(err, res){ //使用这行所示方法,交易可以发起,但无法成功完成

                                //使用下一行的方法,执行成功

                                //这儿下注,默认就为赌大---

                                cc.xiazhu.sendTransaction(true,message,function(err, res){

                                    var output = "";

                                    if (!err) {

                                        output += res;

                                    } else {

                                        output = err;

                                    }

                                    listendonate();

                                    document.getElementById('donateback').innerHTML = "返回信息:Transaction response= " + output + "<br />";

                                });

                                return "ok";

                            }else{

                                alert(err);

                            }

                        }); 

                        document.getElementById('donateback').innerHTML = "操作执行中...";

                    }catch(err){

                        alert('执行参与下注出错:' + err);

                        document.getElementById('donateback').innerHTML = "执行失败:Transaction response= " + output + "<br />";

                        return err;

                    }

                }

     

                //--开奖--

                function getmygiftback(){

                    try {

                        cc.KaiJiang(6,function(error, result){

                            if(!error)

                        {

                            

                            $("#getback").html("操作完成。" + result);

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#getback").html('操作失败:' + error);

                        }});

                        //return "ok"

                        $("#getback").html('正在操作。。。');

                    } catch (error) {

                        alert("尝试开奖时出错 :" + error)

                    }

                }

     

                //部署合约节点取走平台赢利

                function getdraw(){

                    try {

                        cc.getYingLi(function(error, result){

                            if(!error)

                        {

                            

                            $("#getdoback").html("操作完成。" + result);

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#getdoback").html('操作失败:' + error);

                        }});

                        //return "ok"

                        $("#getdoback").html('正在操作。。。');

                    } catch (error) {

                        alert("尝试取走众筹款项时出错 ;" + error)

                    }

                }

     

                //监听当前 次的众筹事件

                function listendonate(){

                    try {

                        document.getElementById('donateback').innerText="事件结果监听中......";

                        //------------------------------------------

                        var event=cc.FundTransfer();

                        event.watch(function(error,result){

                            if(!error){

                                var strls="";

                                var strls2="";

                                for(let key in result){

                                   strls=strls + key + " : " + result[key] + "; ";

                                }

                                //https://me.tryblockchain.org/blockchain-solidity-event.html

                                try {

                                    var fl=0.0;

                                    try {

                                        fl=(result.args.amount - 0) / (10 ** 18);

                                    } catch (error) {

                                        fl=0.0

                                    }

                                    var strls3=result.args.amount + "wei";

                                    if(fl!=0.0){

                                        strls3=fl.toString + "ether"

                                    }

                                    strls2="参与众筹金额:" + strls3 + ",得到的代币CI金额" + result.args.backci + "ci.";

                                } catch (error) {

                                    strls2="具体事件参数信息未能获取到:" + error;

                                }

     

                                document.getElementById('donateback').innerHTML=strls + "<br />" + strls2;

                            }else{

                               document.getElementById('donateback').innerText=error;

                            }

                        })

     

                        /*

                            下面是接收到的返回事件监控信息:

                            address : 0x7a2559f23e056f39e844a465600eb605c4e3aeabblockHash : 0xfab4a6bc95c9aa41fc688e89a87023b124fd581c6bd680226ab08b3d883002ebblockNumber : 6459690logIndex : 1removed : falsetransactionHash : 0xdcd4b44f01fce402ac56ec22be5d6ba479195a48db3ea8082382b4cea81af856transactionIndex : 0event : FundTransferargs : [object Object]

    undefined,1000000000000000,100,100000000000000000000,100,100000 

     

                        */

     

                        //上面的写法成功,但只能监听当前 一次事件

     

                        /*

                            注意参照以下代码:

                            instructorEvent.watch(function(error, result) {

                                if (!error)

                                    {

                                        $("#info").html(result.args.name + ' (' + result.args.age + ' years old)');

                                    } else {

                                        console.log(error);

                                    }

                            });

                        */

     

                        //下面这种写法报错

                        //var myEvent = cc.events.FundTransfer({

                        //    filter: {myIndexedParam: [20,23], myOtherIndexedParam: '0x123456789...'}, // Using an array means OR: e.g. 20 or 23

                        //                fromBlock: 0

                        //                },

                        //    fromBlock: 0

                        //}, function(error, event){})

                        //.on('data', function(event){

                        //    document.getElementById("listenback").innerText=event; // same results as the optional callback above

                        //})

                        //.on('changed', function(event){

                        //        // remove event from local database

                        //})        

                        //.on('error', console.error);

     

                        

                    } catch (error) {

                        document.getElementById('donateback').innerText="监听事件错误:" + error;

                    }

                }

     

                //取回合约地址上多余的ci代币

                function getciback(){

                    try {

                        cc.getbackci(function(error, result){

                            if(!error)

                        {

                            

                            $("#getciback").html("操作完成。" + result);

                           //alert(result);

                        }

                        else{

                            //alert(error);

                            $("#getciback").html('操作失败:' + error);

                        }});

                        //return "ok"

                        $("#getciback").html('正在操作。。。');

                    } catch (error) {

                        document.getElementById('getciback').innerText="尝试取回合约地址上剩余的ci代币时失败:" + error;

                    }

                }

     

                //取回包括历史事件记录在内的所有记录,当前 函数取回参与众筹的广播事件

                function listenevent(){

                    try {

                        //执行下面的语句时,会把getPastEvents当作合约中的函数处理,

                        //但由于合约中根本没有这个函数,所以会报错,

                        //http://cw./card/c/web3.js-1.0/1/4/15/

                        var event=cc.FundTransfer();

                        event.watch({filter:{

                            //filter: {myIndexedParam: [20,23], myOtherIndexedParam: '0x123456789...'}, // Using an array means OR: e.g. 20 or 23

                            fromBlock: 0,

                            toBlock: 'latest'

                        }}, function(error, events){

                            document.getElementById("listenback").innerText=events;

                        })

                        //.then(function(events){

                        //    document.getElementById("listenback").innerText=events;// same results as the optional callback above

                        //});

     

                    } catch (error) {

                        document.getElementById("listenback").innerText="监听失败:" + error;

                    }

                }

     

                //--------------------------调用测试---------------------------------------

                //--查询total包含押大的和押小的,接收两个返回值

                function cmdone_click(){

                    try{

                        gettotal();

                    }catch(err){

                        alert(err);

                    }

                }

     

                //--查询total2

                function cmdone2_click(){

                    try{

                        gettotal2();

                    }catch(err){

                        alert(err);

                    }

                }

        

                //--查询最后一次开奖记录----

                function cmdtwo_click(){

                    try{

                        getEndTimeStamp();

                    }catch(err){

                        alert(err);

                    }

                }

     

                //--查询我自己(当前节点)的下注情况---

                function cmdthree_click(){

                    try{

                        myXiaZhuValue();

                    }catch(err){

                        alert(err);

                    }

                }

     

                //--查询已参与节点总数--

                function cmdfoure_click(){

                    try{

                        getallgiftandvalue2();

                    }catch(err){

                        alert(err);

                    }

                }

     

                //--查询指定节点的参与总金额---

                function cmdfive_click(){

                    try{

                        var v=document.getElementById("txtaddress").value;

                        if(v.length<=0){

                            alert("请先输入要查询的节点地址");

                        }else{

                            getAddressGift(v);

                        }

                        

                    }catch(err){

                        alert(err);

                    }

                }

     

                //--查询所有押大的节点与下注金额

                function cmdsix_click(){

                    try {

                        getallgiftandvalue();

                    } catch (error) {

                        alert(error);

                    }

                }

     

                //--下注-------------

                function cmddonate_click(){

                    try{

                        var strls=document.getElementById("txtvalue").value;

                        //alert(strls);

                        if(/^[0-9]+.?[0-9]+?$/.test(strls)){

                            var fls=parseFloat(strls);

                            //var intls=fls * (10**18);

                            //alert(fls);

                            k=dodate(fls);

                        }else{

                            alert('只能输入数字');

                        }

                    }catch(err){

                        alert("操作失败:" + err);

                    }

                }

     

                //---参与众筹都取回自己的参与金额---

                function cmdgetback_click(){

                    try {

                        getmygiftback();

                    } catch (error) {

                        alert("操作失败:" + error);

                    }

                }

     

                //众筹发起者取走成功众筹的金额

                function cmddo_click(){

                    try {

                        getdraw();

                    } catch (error) {

                        alert("操作失败:" + error)   

                    }

                }

     

                //监听众筹事件

                function cmdlisten_click(){

                    try {

                        document.getElementById("listenback").innerText="开始监听";

                        listenevent();

                    } catch (error) {

                        alert("操作失败:" + error);

                    }

                }

     

                //由部署合约的节点去取回合约中剩余的CI代币

                function cmdgetciback_click(){

                    try {

                        getciback();

                    } catch (error) {

                        alert("操作失败:" + error)

                    }

                }

     

        

            </script>

            

    </head>

    <body>

        <div>

            <p>

                BoCai合约地址:

            </p>

            <p id="contractaddress" name="contractaddress">

     

            </p>

            <p id="goal" name="goal">

     

            </p>

     

            <p id="firstinfo" name="firstinfo">

     

            </p>

     

            <p id="accountsinfo" name="accountsinfo">

     

            </p>

            <p id="curinfo" name="curinfo">

     

            </p>

        

        </div>

        <div>

            <input type="button" value="查询当前押大和押小的金额" id="cmdone" name="cmdone" onclick="cmdone_click();" />

            <span id="total" name="total"></span>

            <br /><br />

            <input type="button" value="查询当前合约地址拥有的eth总金额" id="cmdone2" name="cmdone2" onclick="cmdone2_click();" />

            <span id="total2" name="total2"></span>

            <br /><br />

            <input type="button" value="查询最后一次开奖记录" id="cmdtwo" name="cmdtwo" onclick="cmdtwo_click();" />

            <span id="endtime" name="endtime"></span>

            <br /><br />

            <input type="button" value="查询我的下注情况" id="cmdthree" name="cmdthree" onclick="cmdthree_click();" />

            <span id="alladdress" name="alladdress"></span>

            <br /><br />

            <input type="button" value="查询所有押大的节点和金额" id="cmdsix" name="cmdsix" onclick="cmdsix_click();" />

            <span id="bigalladdressandvalue" name="bigalladdressandvalue"></span>

            <br /><br />

            <input type="button" value="查询所有押小的节点和金额" id="cmdfoure" name="cmdfoure" onclick="cmdfoure_click();" />

            <span id="smallalladdressandvalue" name="smallalladdressandvalue"></span>

            <br /><br />

            <input type="button" value="查询指定节点参与金额" id="cmdfive" name="cmdfive" onclick="cmdfive_click();" />

            <br />

            <input type="text" value="" id="txtaddress" name="txtaddress" style="200px;" />

            <br />

            <span id="address" name="address"></span>

            <br /><br />

            <input type="button" value="我要下赌注" id="cmddo" name="cmddo" onclick="cmddonate_click();" />

            <input type="text" value="0.001" id="txtvalue" name="txtvalue" />eth

            <br />

            <span id="donateback" name="donateback"></span>

            <br /><br />

            <input type="button" value="开奖" id="cmdgetback" name="cmdgetback" onclick="cmdgetback_click();" />

            <span id="getback" name="getback">在满足条件时才能开奖。</span>

            <br /><br />

            <input type="button" value="取走赢利" id="cmddo" name="cmddo" onclick="cmddo_click();" />

            <span id="getdoback" name="getdoback">只有合约部署节点才能取走平台赢利的款项。</span>

            <br /><br />

     

            <input type="button" value="监听合约的事件" id="cmdlisten" name="cmdlisten" onclick="cmdlisten_click();" />

            <span id="listenback" name="listenback"></span>

            <br /><br />




        </div>

        

    </body>

    </html>

    ```

     

    github: https://github.com/lhghroom/Self-learning-blockchain-from-scratch

    原文地址:https://www.941xue.com/content.aspx?id=1696

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  • 原文地址:https://www.cnblogs.com/lhghroom/p/14111249.html
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