zoukankan      html  css  js  c++  java
  • 《js笔记》

    1.判断浏览器是否启用cookie:

    if (navigator.cookieEnabled==true)
        {
        alert("已启用 cookie")
        }
    else
        {
        alert("未启用 cookie")
        }
    }

    1.从url中获取参数的值:

    <script type="text/javascript">
        function getQueryString( name ){
            var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
            var r = window.location.search.substr(1).match(reg);
            if( r!=null ) return  unescape(r[2]); return null;
        }
    </script>

    代码解释:

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>js正则表达式</title>
    <link rel="stylesheet" type="text/css" href="bootstrap/bootstrap.min.css">
    <style type="text/css">
    </style>
    </head>
    <body>
    
    </body>
    <script type="text/javascript">
     function getQueryString(name){
        var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
    
        var r = window.location.search.substr(1);
        var result = r.match(reg);
    
        console.log(r);
        console.log(reg);
        console.log(result);
    
        if(result!=null){
            return unescape(result[2]);
        }
    
        return null;
    
    }
    
    var age = getQueryString("age");
    
    console.log(age);
    
    //代码解释:
    正则表达式为:/(^|&)age=([^&]*)(&|$)/
    分析它匹配的:
    ^age=10&
    ^age=10$
    &age=10&
    &age=10$
    
    待匹配的字符串:
    id=123&age=10&sb=1&hu=abc
    
    匹配的结果:
    &age=10&
    整个&age=10&为第0组; 
    第1组为&
    第2组为10
    第3组为&
    
    </script>
    </html>
    View Code

    本地调试,浏览器输入:file:///G:/test_demo/queryString.html?id=123&age=10&sb=1&hu=abc

    console打印:

     unescape函数:

    escape("Visit W3School!")
    "Visit%20W3School%21"
    unescape("Visit W3School!")
    "Visit W3School!"
    unescape("Visit%20W3School%21")
    "Visit W3School!"
    encodeURIComponent("Visit W3School!")
    "Visit%20W3School!"
    decodeURIComponent("Visit W3School!")
    "Visit W3School!"
    encodeURI("Visit W3School!")
    "Visit%20W3School!"

    注释:ECMAScript v3 已从标准中删除了 unescape() 函数,并反对使用它,因此应该用 decodeURI() 和 decodeURIComponent() 取而代之。

    2.改变窗口大小、触发改变窗口大小事件:

    <body id="box">
    
    </body>
    <script type="text/javascript">
    var winWidth = 0;
    function addEventOnResize() {
        $(window).resize(function () {
            winWidth = $(this).width();
            var dom = document.getElementById('box');
            if (!dom) {
                return;
            }
            if (winWidth > 1366) {
                dom.className = 'box1240';
            } else {
                dom.className = 'box1000';
            }
        }).resize();
    }
    addEventOnResize();
    
    </script>

    w3上介绍resize的用法:

    <html>
    <head>
    <script type="text/javascript" src="/jquery/jquery.js"></script>
    <script type="text/javascript">
    x=0;
    $(document).ready(function(){
      $(window).resize(function() {
        $("span").text(x+=1);
      });
      $("button").click(function(){
        $(window).resize();
      });
    });
    </script>
    </head>
    <body>
    <p>窗口的大小被调整了 <span>0</span> 次。</p>
    <p>请试着调整浏览器窗口的大小。</p>
    <button>触发窗口的 resize 事件</button>
    </body>
    </html>

    3.动态加载js代码:            

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>js代码学习</title>
    <link rel="stylesheet" type="text/css" href="bootstrap/bootstrap.min.css">
    <style type="text/css">
    </style>
    </head>
    <body>
    
    
    <script type="text/javascript">
    (function() {
        var hm = document.createElement("script");
        hm.src = "//hm.baidu.com/hm.js?df0a72cf81dd321c00f5baefc3c4855d";
        var s = document.getElementsByTagName("script")[0];
        s.parentNode.insertBefore(hm, s);
    })();
    
    </script>
    </body>
    </html>
    View Code

    运行完成之后:

    insertBefore用法:http://www.w3school.com.cn/jsref/met_node_insertbefore.asp

    insertBefore() 方法在您指定的已有子节点之前插入新的子节点。
    
    <!DOCTYPE html>
    <html>
    <body>
    
    <ul id="myList"><li>Coffee</li><li>Tea</li></ul>
    
    <p id="demo">请点击按钮向列表插入一个项目。</p>
    
    <button onclick="myFunction()">试一下</button>
    
    <script>
    function myFunction()
    {
    var newItem=document.createElement("LI")
    var textnode=document.createTextNode("Water")
    newItem.appendChild(textnode)
    
    var list=document.getElementById("myList")
    list.insertBefore(newItem,list.childNodes[0]);
    }
    </script>
    
    <p><b>注释:</b><br>首先请创建一个 LI 节点,<br>然后创建一个文本节点,<br>然后向这个 LI 节点追加文本节点。<br>最后在列表中的首个子节点之前插入此 LI 节点。</p>
    
    </body>
    </html>
    View Code

     再来一个动态加载css的代码:

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>动态加载js和css</title>
    </head>
    <body>
    
    <button class="btn btn-danger">bootstrap样式按钮</button>
    
    <script src="jquery/jquery.min.js"></script>
    <script type="text/javascript">
    //动态加载os.js
    var js = document.createElement("script");
    js.type = "text/javascript";
    js.src="os.js";
    document.getElementsByTagName("head")[0].appendChild(js);
    
    //动态加载css
    var css = document.createElement("link");
    css.type = "text/css";
    css.href = "bootstrap/bootstrap.min.css";
    css.rel = "stylesheet";
    document.getElementsByTagName("head")[0].appendChild(css);
    
    </script>
    </body>
    </html>
    View Code

    其外链接的os.js:

    /**
    *   判断客户端操作系统类型
    */
    (function() {
        var agent = navigator.userAgent.toLowerCase();
        var os_type = "";
        if (/android/i.test(navigator.userAgent)) {
            var index = agent.indexOf("android");
            version = agent.substr(index + 8, 3);
            os_type = "Android " + version;
        }
        if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
            var index = agent.indexOf("os");
            version = agent.substr(index + 3, 3);
            os_type = "iOS " + version;
        }
        if (/Linux/i.test(navigator.userAgent) && !/android/i.test(navigator.userAgent) && !/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
            os_type = "Linux";
        }
        if (/windows|win32/i.test(navigator.userAgent)) {
            os_type = "windows32";
        }
        if (/windows|win64/i.test(navigator.userAgent)) {
            os_type = "windows64";
        }
        console.log("客户端类型:" + os_type);
    })();
    View Code

    运行结果,观察console和bootstrap样式是否生效:

    4.获取客户端操作系统类型

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>js代码学习</title>
    <link rel="stylesheet" type="text/css" href="bootstrap/bootstrap.min.css">
    <style type="text/css">
    </style>
    </head>
    <body>
    
    <script type="text/javascript">
    var OSType = detectOS(); //操作系统
    
    console.log(OSType);        
    
    
    //获取客户端操作系统类型
    function detectOS() {
        var sUserAgent = navigator.userAgent;
        var isWin = (navigator.platform === "Win32") || (navigator.platform === "Windows");
        var isMac = (navigator.platform === "Mac68K") || (navigator.platform === "MacPPC") || (navigator.platform === "Macintosh") || (navigator.platform === "MacIntel");
        var bIsIpad = sUserAgent.match(/ipad/i) === "ipad";
        var bIsIphoneOs = sUserAgent.match(/iphone os/i) === "iphone os";
        var isUnix = (navigator.platform === "X11") && !isWin && !isMac;
        var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
        var bIsAndroid = sUserAgent.toLowerCase().match(/android/i) === "android";
        var bIsCE = sUserAgent.match(/windows ce/i) === "windows ce";
        var bIsWM = sUserAgent.match(/windows mobile/i) === "windows mobile";
        if(isMac) return "Mac";
        if(isUnix) return "Unix";
        if(isLinux) {
            if(bIsAndroid) {
                return "Android";
            } else {
                return "Linux";
            }
        }
        if(bIsCE || bIsWM) {
            return 'wm';
        }
        if(isWin) {
            var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1;
            if(isWin2K) return "Win2000";
            var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1;
            if(isWinXP) return "WinXP";
            var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1;
            if(isWin2003) return "Win2003";
            var isWinVista = sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1;
            if(isWinVista) return "WinVista";
            var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1;
            if(isWin7) return "Win7";
            var isWin8 = sUserAgent.indexOf("Windows NT 6.2") > -1 || sUserAgent.indexOf("Windows 8") > -1;
            if(isWin8) return "Win8";
            var isWin10 = sUserAgent.indexOf("Windows NT 10.0") > -1 || sUserAgent.indexOf("Windows 10") > -1;
            if(isWin10) return "Win10";
        }
        return "other";
    }
    
    
    /*
    代码解释:
    sUserAgent:
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36"
    
    navigator.platform:
    "Win32"
    
    */
    </script>
    </body>
    </html>
    View Code

    运行后,console打印:

    5.判断浏览器类型和版本:

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>js代码学习</title>
    <link rel="stylesheet" type="text/css" href="bootstrap/bootstrap.min.css">
    <style type="text/css">
    </style>
    </head>
    <body>
    
    <script src="jquery/jquery.min.js"></script>
    <script type="text/javascript">
    var browserType = explorerType(); //浏览器
    
    console.log(browserType);
    
    //判断浏览器
    function explorerType() {
        var brow = getBrowser();
        var mozilla = /firefox/.test(navigator.userAgent.toLowerCase());
        // $.browser.mozilla = /firefox/.test(navigator.userAgent.toLowerCase());
        // $.browser.webkit = /webkit/.test(navigator.userAgent.toLowerCase());
        // $.browser.opera = /opera/.test(navigator.userAgent.toLowerCase());
        // $.browser.msie = /msie/.test(navigator.userAgent.toLowerCase());
        var bInfo = "非主流浏览器";
    
        if(brow.msie) {
            bInfo = "MicrosoftInternetExplorer" + brow.version;
        }
        if(brow.mozilla) {
            bInfo = "MozillaFirefox" + brow.version;
        }
        if(brow.safari) {
            bInfo = "AppleSafari" + brow.version;
        }
        if(brow.opera) {
            bInfo = "Opera" + brow.version;
        }
        if(brow.chrome) {
            bInfo = "chrome" + brow.version;
        }
        return bInfo;
    }
    
    //navigator.userAgent中取浏览器和版本
    function uaMatch(e){
        e=e.toLowerCase();
        console.log(e);
    
        var t=/(chrome)[/]([w.]+)/.exec(e)
            ||/(webkit)[/]([w.]+)/.exec(e)
            ||/(opera)(?:.*version|)[/]([w.]+)/.exec(e)
            ||/(msie) ([w.]+)/.exec(e)
            ||e.indexOf("compatible")<0 && /(mozilla)(?:.*? rv:([w.]+)|)/.exec(e)
            ||[];
    
        console.log(t);
        
        return {
                browser:t[1]||"",
                version:t[2]||"0"
               }
    }
    
    //获取浏览器信息
    function getBrowser(){
        var e = uaMatch(navigator.userAgent);
        var t = {};
        if(e.browser){
            t[e.browser] = !0;
            t.version = e.version;
        }
    
        if(t.chrome){
            t.webkit = !0;
        }else{
            t.webkit&&(t.safari=!0);        //这句话有点问题,因为我是从min.js中翻译出来的,这句话不懂。应该是判断safari
        }
    
        console.log(t);    
    
        return t;
    }
    </script>
    </body>
    </html>
    View Code

    运行,console打印:

    6.获取网站来源,从哪个网站跳转过来的:

    <script type="text/javascript">
    var from = ''; //来源(备选参数)
    
    var to = window.location.host + window.location.pathname; //当前url
    if(to.indexOf("http://") <= -1) {
        to = "http://" + to;
    }
    var fr_url = document.referrer; //来源
    if(fr_url == '' || fr_url == 'null') {
        fr_url = 'null';
    } else {
        fr_url = fr_url.split("?");
        fr_url = String(fr_url[0]);
    }
    from = fr_url;
    
    console.log(from);
    
    
    </script>
    View Code

    7.获取uid的一种写法:

    <script type="text/javascript">
    var uid = uid();
    
    console.log(uid);    //打印 15062136704724854
    
    
    //获取UID
    function uid() {
        u_id = (+new Date()) + Math.random().toString(10).substring(2, 6);
        return u_id;
    }
    
    /*
    (+new Date()):
    1506213347503
    
    Math.random().toString(10):
    "0.44199265208142435"
    
    toString()函数用于将当前对象以字符串的形式返回。
    
    该方法属于Object对象,由于所有的对象都"继承"了Object的对象实例,因此几乎所有的实例对象都可以使用该方法。
    
    所有主流浏览器均支持该函数。
    
    number.toString(radix)
    radix: 可选。规定表示数字的基数,使 2 ~ 36 之间的整数。若省略该参数,则使用基数 10。但是要注意,如果该参数是 10 以外的其他值,则 ECMAScript 标准允许实现返回任意值。
    2 - 数字以二进制值显示
    8 - 数字以八进制值显示
    16 - 数字以十六进制值显示
    
    例子:
    var num = 15; num.toString();
    "15"
    var num = 15; num.toString(2);
    "1111"
    var num = 15; num.toString(8);
    "17"
    
    */
    
    </script>
    View Code

    8.体育网站上写的一种ajax请求,jsonp,error函数中的处理:

    //请求传递数据
    function getData_ajax(url) {
        $.ajax({
            type: 'get',
            url: url + '?param=' + encodeURI(param),
            dataType: 'jsonp',
            jsonp: 'callback',
            timeout: 6000,
            beforeSend: function() {
                // 加载提示
                $('#ajax_tips').show();
            },
            success: function(data) {
                //数据传递验证成功后执行的操作
                console.log("scc-data="+JSON.stringify(data));
            },
            complete: function() {},
            error: function(jqXHR, textStatus, errrorThrown) {
                if(errrorThrown == 'Not Found') {
                    console.log('Your requested address is not found.');
                } else if(textStatus == 'timeout') {
                    console.log('Verify the request timeout, please refresh the page and try again');
                } else {
                    console.log('Your requested address is not found.');
                }
            }
        });
    }

    9.效仿体育网站动态加载js,加载js完成后 执行回调函数;

    加载广告js等:

    <script type="text/javascript">
    
    /**
     * type 为广告类型
     * 0:百度ssp正常加载方式
     * 1:淘宝afp加载
     * 2:防屏蔽代码加载方式
     * 3:百度ssp广告异步加载方式
     * 4:防屏蔽广告立即加载方式
     * @type type
     */
    function getQueryString(name) {
        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);
        if (r != null)
            return  unescape(r[2]);
        return null;
    }
    
    $.eastday = {
        qid: function () {
            return getQueryString('qid') ? getQueryString('qid') : "";
        },
        //加载js,并且js加载完成后执行回调函数
        getScript: function(url, callback, element) {
            var head = document.getElementsByTagName('head')[0],
                js = document.createElement('script');
    
            js.setAttribute('type', 'text/javascript');
            js.setAttribute('src', url);
            if(element){
                element.appendChild(js);
            } else {
                head.appendChild(js);
            }
            //执行回调
            var callbackFn = function(){
                if(typeof callback === 'function'){
                    callback();
                }
            };
    
            if (document.all) { // IE
                js.onreadystatechange = function() {
                    if (js.readyState === 'loaded' || js.readyState === 'complete') {
                        callbackFn();
                    }
                };
            } else {
                js.onload = function() {
                    callbackFn();
                };
            }
        },
        //ssp正常加载方式
        ssp_writer:function (corp_id,data_id) {
            var s = "_" + Math.random().toString(36).slice(2);
            document.write('<div class="eastday_da" data_id="' + data_id + '" id="' + s + '"></div>');
            (window.slotbydup=window.slotbydup || []).push({id: corp_id, container: s, display: 'display'});
        },
        //ssp普通加载方式
        ssp_normal : function (corp_id,data_id){
            if(data_id == 'news_content_ad_top'){
                this.ssp_writer(corp_id,data_id)
                return
            }
            var width = parseInt(__da_size[data_id]["width"]) || 0;
            if(!width){
                this.ssp_writer(corp_id,data_id)
                return
            }
            document.write('<iframe   class="iframeDA" style="border:0 none; '+__da_size[data_id].width+'px; height:'+0+'px; " frameborder="0"  scrolling=no src="/asspd.html?corp_id='+corp_id+'&data_id='+data_id+'"></iframe>')
        },
        //ssp JS动态加载方式
        ssp_dynamic : function (corp_id,data_id){
            return '<iframe  style="border:0 none; '+__da_size[data_id].width+'px; height:'+__da_size[data_id].height+'px;" frameborder="0"  scrolling=no src="/asspd.html?corp_id='+corp_id+'&data_id='+data_id+'"></iframe>';
            },
        //afp JS动态加载方式
        afp_dynamic : function(corp_id,data_id){
            //淘宝AFP广告
            var width = parseInt(__da_size[data_id]["width"]) || 0;
            var height = parseInt(__da_size[data_id]["height"]) || 0;
            var dom = $('<iframe  style=" '+__da_size[data_id].width+'px; height:'+__da_size[data_id].height+'px;" frameborder="0" scrolling="no"  src="/mmad.html?mmid='+corp_id+'"></iframe>');
            return dom;
        },
        //防屏蔽代码正常加载方式,本身为异步
        fangpingbi : function (corp_id,data_id){
            document.write('<script type="text/javascript" src="//tt123.eastday.com/' + corp_id + '.js"></script>');
        },
        //防屏蔽代码JS动态加载方式,本身为异步
        fangpingbi_dynamic: function (corp_id,data_id){
            var s = "_" + Math.random().toString(36).slice(2);
            var dom = $('<div id="'+data_id+'+s+'"></div>');
            dom.ready(function () {
                $.eastday.getScript('//tt123.eastday.com/' + corp_id + '.js', function(){}, dom[0]);
            });
            return dom;
        }
    };
    
    // 广告位高度自适应
    window.setInterval(function () {
        $('.iframeDA').each(function (k,iframe) {
            if(iframe.contentWindow.document.body){
                var bHeight = iframe.contentWindow.document.body.scrollHeight;
                var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;
                var height = Math.max(bHeight, dHeight);
                iframe.style.height = height+'px';
            }
        });
    }, 200);
    
    </script>
    View Code

    代码解释:

    appendChild() 方法:

    <!DOCTYPE html>
    <html>
    <body>
    
    <ul id="myList"><li>Coffee</li><li>Tea</li></ul>
    
    <p id="demo">请点击按钮向列表中添加项目。</p>
    
    <button onclick="myFunction()">亲自试一试</button>
    
    <script>
    function myFunction()
    {
    var node=document.createElement("LI");
    var textnode=document.createTextNode("Water");
    node.appendChild(textnode);
    document.getElementById("myList").appendChild(node);
    }
    </script>
    
    <p><b>注释:</b>首先创建 LI 节点,然后创建文本节点,然后把这个文本节点追加到 LI 节点。最后把 LI 节点添加到列表中。</p>
    
    </body>
    </html>
    View Code

    scrollHeight:  参考网站 http://www.cnblogs.com/nanshanlaoyao/p/5964730.html

     10.另一种获取客户端操作系统的方法:

    <script type="text/javascript">
    /**
    *   判断客户端操作系统类型
    *   不过没有看到windows xp的。不是很全
    */
    function getOsType() {
        var agent = navigator.userAgent.toLowerCase();
        
        console.log(agent);
    
        var os_type = "";
        if (/android/i.test(navigator.userAgent)) {
            var index = agent.indexOf("android");
            version = agent.substr(index + 8, 3);
            os_type = "Android " + version;
        }
        if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
            var index = agent.indexOf("os");
            version = agent.substr(index + 3, 3);
            os_type = "iOS " + version;
        }
        if (/Linux/i.test(navigator.userAgent) && !/android/i.test(navigator.userAgent) && !/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
            os_type = "Linux";
        }
        if (/windows|win32/i.test(navigator.userAgent)) {
            os_type = "windows32";
        }
        if (/windows|win64/i.test(navigator.userAgent)) {
            os_type = "windows64";
        }
        return os_type;
    };
    
    var a = getOsType();
    
    console.log(a);
    
    </script>
    View Code

    11.效仿体育网站,一个回到顶部的例子:

    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>js代码学习</title>
    <link rel="stylesheet" type="text/css" href="bootstrap/bootstrap.min.css">
    <style type="text/css">
    body{
        height: 2000px;
    }
    .back-top {
        position: fixed;
        left: 50%;
        z-index: 99;
        bottom: 50px;
    }
    .back-top .zd {
         68px;
        height: 68px;
        float: left;
        text-align: center;
        line-height: 68px;
        border: 1px solid #ccc;
    }
    
    </style>
    </head>
    <body>
    <div class="back-top">
        <a class="zd" id="gotop_btn">回到顶部</a>
    </div>
    
    <script src="jquery/jquery.min.js"></script>
    <script type="text/javascript">
    //global_sider 全局侧边栏
    (function () {
        //绑定页面滚动事件
        $(window).bind('scroll', function () {
            var len = $(this).scrollTop();
            if (len >= 400) {
    
                //显示回到顶部按钮
                $('.back-top').show();
            } else {
                //影藏回到顶部按钮
                $('.back-top').hide();
            }
        });
        //顶部
        $('body').on('click', '#gotop_btn', function () {
            $('html').animate({scrollTop: 0})
            $("html, body").filter(':not(:animated)').animate({
                scrollTop: 0
            });
        });
    })();
    
    
    </script>
    </body>
    </html>
    View Code

    12.jsonp怎么用呢?

    1.
        adAjax: function () {
            var self = this;
            $.ajax({
                type: 'get',
                url: self.recommend_param(),
                timeout: 3000,
                dataType: 'jsonp',
                jsonp: 'jsonp',
                success: function (data) {
                    self.addDom(data, self)
                }
            })
        }
    View Code

     13.比较两个数组是否完全相等:

    <script type="text/javascript">
    var array1 = ['a', 'c', 'b'];
    var array2 = ['a', 'c', 'b'];
    console.log(isArrayEql(array1, array2));
    console.log(array1);
    
    //true
    //["a", "b", "c"]
    
    /* 比较两个数组是否完全相等 */
    function isArrayEql(arr1, arr2){
        if(arr1 instanceof Array && arr2 instanceof Array){
            var len1 = arr1.length;
            var len2 = arr2.length;
            if(len1 == len2){
                arr1 = arrSort(arr1);
                arr2 = arrSort(arr2);
                return arr1.toLocaleString() == arr2.toLocaleString();
            }else{
                return false;
            }
        }else{
            return false;
        }
    }
    
    /* 
     *    对数组排序
     *  order排序规则,asc- 升序,默认  desc - 倒序  
     */
     function arrSort(arr, order){
         if(arr instanceof Array){
             arr.sort(function(v1, v2){
                 if(v1 < v2){
                     return order=='desc'? 1:-1;
                 }else if(v1 > v2){
                     return order=='desc'? -1:1;
                 }else{
                     return 0;
                 }
             });
             return arr;
         }else{
             return arr;
         }
     }
    </script>

    注意:上面代码的一个弊端也是:比较完大小之后,把array1的顺序排序了。

    14.

    ---------

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  • 原文地址:https://www.cnblogs.com/tenWood/p/7583104.html
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