zoukankan      html  css  js  c++  java
  • 常见js函数

    /*根据元素ID查找元素*/
    function $() {
    var elements = new Array();
    for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
    element = document.getElementById(element);
        if (arguments.length == 1)
    return element;
    elements.push(element);
      }
      return elements;
    }

    /*根据元素ID取得元素*/
    function $E(elemid) {
    return document.getElementById(elemid);
    }

    /*根据元素ID取得元素的value*/
    function $Vo(elemid) {
    return document.getElementById(elemid).value;
    }

    /*根据元素ID取得元素的innerHTML*/
    function $H(elemid) {
    return document.getElementById(elemid).innerHTML;
    }

    /*根据元素ID隐藏该元素*/
    function $Hide(id) {
        document.getElementById(id).style.display = 'none';
    }

    /*根据元素ID显示该元素*/
    function $Display(id) {
        document.getElementById(id).style.display = 'block';
    }

    /*根据元素ID设置该元素为空*/
    function $Dlose(id) {
        document.getElementById(id).innerHTML='';
    }

    /*网页转向*/
    function $U(url){
    window.location.href=url;
    }

    /*取字符长度,一个中文字符为两个字节*/
    function $Len(str){
    return (''+str).replace(/[^\x0000-\xFF00]/gi,'xx').length;
    }

    //用正则表达式将前后空格用空字符串替代。
    function trim(strSrc)
    {
    return strSrc.replace(/(^\s*)|(\s*$)/g, "");
    }

    //onkeypress时根据输入类型控制输入字符,"F":浮点型 "I":整型 "D":日期型
    function filterKey(sType){
    var iKey = window.event.keyCode;

    if(sType == "F"){ //浮点型

    if(iKey != 45 && iKey != 46 && iKey != 13 && iKey != 11 && !(iKey>=48 && iKey<=57))
    window.event.keyCode = 0
    else{
    if(iKey == 46){
    var obj = window.event.srcElement;
    if(obj.value.indexOf(".")>=0)
    window.event.keyCode = 0;
    }
    if(iKey == 45){
    var obj = window.event.srcElement;
    if(obj.value.indexOf("-")>=0)
    window.event.keyCode = 0;
    else{
    window.event.keyCode = 0;
    obj.value = "-" + obj.value;
    if(obj.onchange != null){
    obj.onchange();
    }
    }
    }
    }
    } //end "F"
    else if(sType == "I"){ //整型
    if(iKey != 13 && iKey != 45 && iKey != 11 && !(iKey>=48 && iKey<=57))
    window.event.keyCode = 0;
    else if(iKey == 45){
    var obj = window.event.srcElement;
    if(obj.value.indexOf("-")>=0)
    window.event.keyCode = 0;
    else{
    window.event.keyCode = 0;
    obj.value = "-" + obj.value;
    if(obj.onchange != null){
    obj.onchange();
    }
    }
    }
    } // end "I"
    else if(sType == "D"){ //日期型
    var obj = window.event.srcElement;
    var strDate = obj.value;

    if(strDate.length>=10){
    window.event.keyCode = 0;
    return;
    }
    else if(strDate.length<4){ //年
    if(iKey != 13 && iKey != 11 && !(iKey>=48 && iKey<=57))
    window.event.keyCode = 0;
    }
    else if(strDate.length == 4){ //分隔符
    if(iKey != 45 && iKey != 47)
    window.event.keyCode = 0;
    }
    else if(strDate.length>=5){
    if( strDate.indexOf("-") > 0 && strDate.indexOf("-") == strDate.lastIndexOf("-")){ //正输入月份
    if(strDate.length>=7 && iKey != 45){ //如果长度过长,则退出
    window.event.keyCode = 0;
    return;
    }

    if(iKey>=48 && iKey<=57){
    var iPos = strDate.indexOf("-");

    var iMonth = parseInt("" + strDate.substr(iPos+1,strDate.length-iPos-1) + (parseInt(iKey) - 48));

    if(strDate.length>=6 && (iMonth <1 || iMonth > 12)){
    window.event.keyCode = 0;
    return;
    }
    }
    } // end if("-")
    else if( strDate.indexOf("/") > 0 && strDate.indexOf("/") == strDate.lastIndexOf("/")){ //正输入月份
    if(strDate.length>=7 && iKey != 47){ //如果长度过长,则退出
    window.event.keyCode = 0;
    return;
    }

    if(iKey>=48 && iKey<=57){
    var iPos = strDate.indexOf("/");

    var iMonth = parseInt("" + strDate.substr(iPos+1,strDate.length-iPos-1) + (parseInt(iKey) - 48));

    if(strDate.length >= 6 && (iMonth <1 || iMonth > 12)){
    window.event.keyCode = 0;
    return;
    }
    }
    } // end if("/")
    else if( strDate.indexOf("-") > 0 && strDate.indexOf("-") != strDate.lastIndexOf("-")){ //正输入日期
    if(iKey>=48 && iKey<=57){
    var iPos = strDate.lastIndexOf("-");
    if(strDate.length - iPos > 2){
    window.event.keyCode = 0;
    return;
    }

    var iDay = parseInt("" + strDate.substr(iPos+1,strDate.length-iPos-1) + (parseInt(iKey) - 48));

    if(iDay > 31){
    window.event.keyCode = 0;
    return;
    }
    }
    }
    else if( strDate.indexOf("/") > 0 && strDate.indexOf("/") != strDate.lastIndexOf("/")){ //正输入日期
    if(iKey>=48 && iKey<=57){
    var iPos = strDate.lastIndexOf("/");
    if(strDate.length - iPos > 2){
    window.event.keyCode = 0;
    return;
    }

    var iDay = parseInt("" + strDate.substr(iPos+1,strDate.length-iPos-1) + (parseInt(iKey) - 48));

    if(iDay > 31){
    window.event.keyCode = 0;
    return;
    }
    }
    }

    }

    if(strDate.charAt(strDate.length-1) == "-" || strDate.charAt(strDate.length-1) == "/"){
    if(iKey != 13 && iKey != 11 && !(iKey>=48 && iKey<=57))
    window.event.keyCode = 0;
    }

    if(iKey == 47 || iKey == 45){
    if(strDate.indexOf("-") > 0 && iKey == 47)
    window.event.keyCode = 0;
    if(strDate.indexOf("/") > 0 && iKey == 45)
    window.event.keyCode = 0;
    }
    } // end "D"


    }


    /*自适应大小*/
    function DrawImage(ImgD,_width,_height){
    if(!_width) _width=120;
    if(!_height) _height=120;
    var flag=false;
    var image=new Image();
    image.src=ImgD.src;
    if(image.width>0&&image.height>0){
    flag=true;
    if(image.width/image.height>=_width/_height){//120/120
    if(image.width>_width){  
    ImgD.width=_width;
    ImgD.height=(image.height*_width)/image.width;
    }else{
    ImgD.width=image.width;  
    ImgD.height=image.height;
    }
    ImgD.alt=image.width+"X"+image.height;
    }
    else{
    if(image.height>_height){  
    ImgD.height=_height;
    ImgD.width=(image.width*_height)/image.height;  
    }else{
    ImgD.width=image.width;  
    ImgD.height=image.height;
    }
    ImgD.alt=image.width+"X"+image.height;
    }
    }


    /*Cookie*/
    function setCookie(name,value)
    {
        var Days = 365;
        var exp  = new Date();    //new Date("December 31, 9998");
            exp.setTime(exp.getTime() + Days*24*60*60);
            document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
    }
    function getCookie(name)
    {
        var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
    if(arr=document.cookie.match(reg))
    return unescape(arr[2]);
    else
    return null;
    }
    function delCookie(name)
    {
        var exp = new Date();
            exp.setTime(exp.getTime() - 1);
        var cval=getCookie(name);
            if(cval!=null)
            document.cookie= name + "="+cval+";expires="+exp.toGMTString();
    }

    /*验证数字*/
    function isNumber(e){
    var number = "1234567890";
    for(var i=0; i<e.length; i++){
    if (number.indexOf(e.charAt(i))<0) {
    return false;
    }
    }
    return true;
    }

    /*验证数字*/
    function isAllDigits(argvalue) {
        argvalue = argvalue.toString();
        var validChars = "0123456789";
        var startFrom = 0;
        if (argvalue.substring(0, 2) == "0x") {
           validChars = "0123456789abcdefABCDEF";
           startFrom = 2;
        } else if (argvalue.charAt(0) == "0") {
           validChars = "01234567";
           startFrom = 1;
        } else if (argvalue.charAt(0) == "-") {
            startFrom = 1;
        }
       
        for (var n = startFrom; n < argvalue.length; n++) {
            if (validChars.indexOf(argvalue.substring(n, n+1)) == -1) return false;
        }
        return true;
    }

    /*检查Email是否合法*/
    function isEmail(s){
        if (s.length<7||s.length > 50){
                return false;
        }
         var regu = "^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|NET|com|COM|gov|GOV|mil|MIL|org|ORG|edu|EDU|int|INT)$"
         var re = new RegExp(regu);
         if (s.search(re) != -1) {
               return true;
         } else {
               return false;
         }
    }

    /*检查字符串是否为Null*/
    function isNull(s){
        if (s == null || s.length <= 0 || s.trim() == ""){
                return true;
        }
        return false;
    }

    /*检查字符串是否为空*/
    function isEmpty(s){
        if (s == null || s.length <= 0 || s.trim() == ""){
                return true;
        }
        return false;
    }


    /*检查日期是否合法*/
    function isValidDate(day, month, year) {
        if (month < 1 || month > 12) {
                return false;
            }
            if (day < 1 || day > 31) {
                return false;
            }
            if ((month == 4 || month == 6 || month == 9 || month == 11) &&
                (day == 31)) {
                return false;
            }
            if (month == 2) {
                var leap = (year % 4 == 0 &&
                           (year % 100 != 0 || year % 400 == 0));
                if (day>29 || (day == 29 && !leap)) {
                    return false;
                }
            }
            return true;
        }

    /*获得Radio的值*/
    function getRadioValue(name){
    var radios = document.getElementsByName(name);
    var i;  
    if (null == radios.length){
      if(radios.checked) {
      return radios.value;
      }
    }
        for(i = 0; i < radios.length; i++){
           if(radios[i].checked){
         return radios[i].value;
           }
        }
        return 0;
    }

    /*设置Radio的值*/
    function setRadioValue(name,value){
    var radios = document.getElementsByName(name);
    var i;
    if (null == radios.length){
      if(radios.checked) {
      radios.checked = "checked";
      }
    }
        for(i=0;i<radios.length;i++){
           if(value == radios[i].value){
         radios[i].checked = "checked";
           }
        }
        return 0;
    }

    /*获得CheckBox的值,多个为数组*/
    function getCheckBoxValues(name){
    var values = new Array();
    var cbs = document.getElementsByName(name);
    var i;  
    if (null == cbs) return values;  
    if (null == cbs.length){
      if(cbs.checked) {
      values[values.length] = cbs.value;
      }
      return values;
    }    
    var count = 0 ; 
    for(i = 0; i<cbs.length; i++){
    if(cbs[i].checked){
    values[values.length] = cbs[i].value;
    }
    }
    return values;
    }

    /*设置CheckBox的值*/
    function setCheckBoxValue(name,value){
    var cbs = document.getElementsByName(name);
    var i;
        if (null == cbs) return 0 ;
      if (null == cbs.length){
      cbs.checked = value;
      return 0;
      }
    for(i=0;i<cbs.length;i++){
      cbs[i].checked = value;
      }
      return 0;
    }

    /*设置CheckBox选中状态*/
    function setCheckBoxs(name,value){
    var cbs = document.getElementsByName(name);
    var i;
        if (null == cbs) return 0 ;
      if (null == cbs.length){
      cbs.checked = true;
      return 0;
      }
    for(i=0;i<cbs.length;i++){
    if(cbs[i].value == value){
    cbs[i].checked = true;
    }
      }
      return 0;
    }

    function htmlEncode(text) {
    return text.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
    }

    var Request = new Object();
    Request.send = function(url, method, callback, data, urlencoded) {
        var req;
        if (window.XMLHttpRequest) {
            req = new XMLHttpRequest();
            if (req.overrideMimeType) {
    req.overrideMimeType('text/xml');
    }
        } else if (window.ActiveXObject) {
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        req.onreadystatechange = function() {
            if (req.readyState == 4) {
                if (req.status < 400) {
                    (method=="POST") ? callback(req) : callback(req,data);
                } else {
                }
            }
        }
        if (method=="POST") {
            req.open("POST", url, true);
            if (urlencoded) req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
            req.send(data);
        } else {
            req.open("GET", url, true);
            req.send(null);
        }
       // return req;
    }

    Request.sendRawPOST = function(url, data, callback) {
        Request.send(url, "POST", callback, data, false);
    }
    Request.sendPOST = function(url, data, callback) {
        Request.send(url, "POST", callback, data, true);
    }
    Request.sendGET = function(url,callback) {
        Request.send(url, "GET", callback, null, null);
    }

    /*分析status文件的内容*/
    function parseResponseStatus(documentElement){
         var dataobj = new Object();
    //parse status
    var status = documentElement.getElementsByTagName("status");
    if(status && status.length > 0){
    if(status[0].firstChild){
    dataobj.status = status[0].firstChild.nodeValue;
    }
    else{
    dataobj.status = "";
    }
    }
    return dataobj;
    }

    //提交form,把得到的数据放在指定的ID上.
    function ajaxFormRequest(datastr) {

    eval("var obj = "+datastr+";");
    if (obj.id == null)
      obj.id = "输入自定义id";
      disableBtn();
    dojo.io.bind({
    url: parseUrl(obj.url),
    useCache: false,
    preventCache: false,
    encoding:'UTF-8',
    load: function(type, data, evt) {
    $E(obj.id).innerHTML = data;
    enableBtn();
    },
    error: function(type, error) { alert("error");},
    mimetype: "text/plain",
    formNode: $E(obj.form)
    });
    }

    //提交form,执行load方法
    function ajaxRequestLoad(datastr) {

    eval("var obj = "+datastr+";");
    if (obj.id == null)
      obj.id = "输入自定义id";
      disableBtn();
    dojo.io.bind({
    url: parseUrl(obj.url),
    useCache: false,
    preventCache: false,
    encoding:'UTF-8',
    load: obj.load,
    error: function(type, error) { alert("error");},
    mimetype: "text/plain",
    formNode: $E(obj.form)
    });
    }


    /*金额标签转换函数*/
    function money_convert(name){

    var formatName = name  + "_format";
    var strValue = document.getElementById(formatName).value;
        strValue=strValue.replace(",","");
        var regex = /^(0(\.\d{0,2})?|([1-9]+[0]*)+(\.\d{0,2})?)$/;
        if(!regex.test(strValue)){
        //alert("金额格式不正确!");
        document.getElementById(name).value=0;
        document.getElementById(formatName).value=0;
        }else{
         
    strValue = Math.round(parseFloat(strValue)*1000+0.001);
          document.getElementById(name).value=strValue;
        }
    }

    /*金额标签转换函数
    * 获得焦点时,去掉金额中的','符号
    */
    function prepare(obj){
    var strValue = obj.value;
    strValue=strValue.replaceAll(",","");
    obj.value = strValue;
    obj.select();
    }

    String.prototype.replaceAll  = function(s1,s2){   
    return this.replace(new RegExp(s1,"gm"),s2);   
    }  

    /*日期标签转换函数*/
    function setDate(name){
    var formatName = "format_" + name;
    var tempDate = document.getElementById(name).value;
    var validateDate = dojo.widget.byId(formatName).inputNode.value;
    var regex = /^[1-9]{1}\d{3}-\d{1,2}-\d{1,2}$/;
    if(regex.test(validateDate)){
    var dateString = validateDate.split("-");
    var year = dateString[0];
    var month = dateString[1];
    var day = dateString[2];
    if(testMonth(month)&&testDay(year,month,day)){
    document.getElementById(name).value=validateDate;
    return;
    }
    }

    if(validateDate==""){
    tempDate="";
    }
    dojo.widget.byId(formatName).inputNode.value=tempDate;
    document.getElementById(name).value=tempDate;
    }

    function testMonth(month){
    if (month < 1 || month > 12)  
        {               
            alert("月份应该为1到12的整数");
            return false;  
        }
        return true;
    }
    function testDay(year,month,day){
        if (day < 1 || day > 31)  
        {  
            alert("每个月的天数应该为1到31的整数");
            return false;  
        }       
        if ((month==4 || month==6 || month==9 || month==11) && day==31)  
        {  
            alert("该月不存在31号"); 
            return false;  
        }       
        if (month==2)  
        {  
            var isleap=(year % 4==0 && (year % 100 !=0 || year % 400==0));  
            if (day>29)  
            {                 
                alert("2月最多有29天"); 
                return false;  
            }  
            if ((day==29) && (!isleap))  
            {                 
                alert("闰年2月才有29天"); 
                return false;  
            }  
        }  
        return true; 
    }
    //比较两个日期是否有效(第一个日期不能在大于第二个日期);第一个日期可以为空,当为空时不进行验证
    function compareTwoDate(startDate,endDate,s){
    var a=startDate;
    var b=endDate;
    if(startDate==""){
    return true;
    }
    if(((Number(a.substring(0,4))-Number(b.substring(0,4)))*356+
           (Number(a.substring(5,7))-Number(b.substring(5,7)))*31+
        (Number(a.substring(8,10))-Number(b.substring(8,10))))>0){
      alert(s);
      //startDate.focus();
      return false;
    }
    return true;
    }
    //比较两个日期时间是否有效(第一个日期时间不能在大于第二个日期时间);第一个日期时间可以为空,当为空时不进行验证
    function compareTwoDateTime(startDate,endDate,startTime,endTime,s){
    var a=startDate;
    var b=endDate;
    var at = startTime;
    var bt = endTime;
    if(startDate==""){
    return true;
    }
    if(((Number(a.substring(0,4))-Number(b.substring(0,4)))*356*24*3600+
           (Number(a.substring(5,7))-Number(b.substring(5,7)))*31*24*3600+
        (Number(a.substring(8,10))-Number(b.substring(8,10)))*24*3600+
        (Number(at.substring(0,2))-Number(bt.substring(0,2)))*3600+
        (Number(at.substring(3,5))-Number(bt.substring(3,5)))*60+
        (Number(at.substring(6))-Number(bt.substring(6)))>0)){
      alert(s);
      return false;
      //startDate.focus();
    }
    return true;
    }
    //验证时间是否合法.
    function testTime(time){
    var regex = /^[0-2]{1}[0-9]{1}:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/;
    if(!regex.test(time)){
    alert("您输入的时间格式不正确!");
    return false;
    }
    var hour = time.substring(0,2);
    var minute = time.substring(3,5);
    var second = time.substring(6);
    if(hour>23 || hour <0){
    alert("小时的值应该在0-23之间!");
    return false;
    }
    if(minute > 60 ||minute < 0){
    alert("分钟的值应该在0-59之间!");
    return false;
    }
    if(second > 60 ||second < 0){
    alert("秒钟的值应该在0-59之间!");
    return false;
    }
    return true;
    }

    String.prototype.trim=function(){
            return this.replace(/(^\s*)|(\s*$)/g, "");
    }

    function sendmoneycheck(path,orderSeqid) {
    var password = document.getElementById('password').value;
            if(document.getElementById('password').value==null || document.getElementById('password').value=='') {
    alert('取款密码必须输入');
    } else {
    var url = path+'/sendmoney/managerecconfirmsendmoney.htm?orderSeqid='+orderSeqid+'&passwd='+document.getElementById('password').value;

    ajaxFormRequest('{url:"'+url+'",id:"paginationResult"}');
    $E('buttonconfirm').disabled=true;
    }
    }


    function isUrlValidate(url){
    var regx = /^(\s)*(http(s)?:\/\/)?([\w-]+\.)+[\w-]+(:(\d{1,4}))?(\/[\w-.\/?%&=]*)?(\s)*$/;
    return regx.test(url);
    }

    function isDateValidate(strDate){
    var regx = /^([1-2]\d{3})[\/|\-](0?[1-9]|10|11|12)[\/|\-]([1-2]?[0-9]|0[1-9]|30|31)$/;
    return regx.test(strDate);
    }

    function isEmailValidate(email){
    var regx = /^(\s)*([\w]+([-_.][\w]+)*@[\w]+([.][\w]+)*\.[\w]+([.][\w]+)*)(\s)*$/;
    return regx.test(email);
    }

    function isPhoneValidate(tel){
    var regx = /^(\s)*((1[35]\d{9})|((0\d{2,3}\-){1}[1-9]{1}\d{6,7}(\-\d{1,4})?))(\s)*$/;

    return regx.test(tel);
    }

    function isMobileValidate(tel){
    var regx = /^(\s)*(1[35]\d{9})(\s)*$/;

    return regx.test(tel);
    }

    function dateCompare(date1, date2){
    date1 = date1.replace(/-/g, "/");
    date2 = date2.replace(/-/g, "/");

    try{
    return Date.parse(date1) - Date.parse(date2);
    }
    catch(e){
    return 0;
    }
    }


    function respond(obj){
    if(window.event.keyCode==13){
    obj.onblur();
    }
    }

    function parseUrl(url){

    var uniqueKey = new Date();
    if(url != null && url.indexOf("?") > 0){
    url += "&uniqueKey=" + uniqueKey;
    }
    else{
    url += "?uniqueKey=" + uniqueKey;
    }
    return url;
    }

    function disableBtn(){
    var oBtns = document.getElementsByName("BTN_QRY");

    if(oBtns != null && oBtns.length > 0){
    for(var i=0; i<oBtns.length; i++){
    oBtns[i].disabled = true;
    }
    }
    }

    function enableBtn(){

    var oBtns = document.getElementsByName("BTN_QRY");

    if(oBtns != null && oBtns.length > 0){
    for(var i=0; i<oBtns.length; i++){
    oBtns[i].disabled = false;
    }
    }
    }
  • 相关阅读:
    ios外包公司——技术分享:IOS开发教程
    ios外派—本公司长年提供ios程序员外派业务(北京动点软件,可签合同)
    mysql
    mysql
    mysql
    mysql
    mysql
    一些学习网站
    java 之 枚举(Enum)
    .net core
  • 原文地址:https://www.cnblogs.com/0000/p/1549567.html
Copyright © 2011-2022 走看看