JS动态添加表单示例

<script type="text/javascript">
function postwith(url, data) {
    var myForm = document.createElement("form");
    myForm.method = "post";
    myForm.action = url;
    for ( var k in data) {
        var myInput = document.createElement("input");
        myInput.setAttribute("name", k);
        myInput.setAttribute("value", data[k]);
        myForm.a(myInput);
}
document.body.a(myForm);
myForm.submit();
document.body.removeChild(myForm);
}
</script>
    $('#month').change(function(){
        var m=$(this).val();
        var id=$('#userId').val();

        var temp = document.createElement("form");
        temp.action = "/admin/Article/article_worklog";
        temp.method = "post";
        temp.style.display = "none";
        var month=document.createElement("input");
            month.name='month';
            month.value=m;
            temp.appendChild(month);
        var uid=document.createElement("input");
            uid.name='id';
            uid.value=id;
            temp.appendChild(uid);
        document.body.appendChild(temp);
        temp.submit();
        return temp;
    });

JS封装的ajax函数

/* 封装ajax函数
 * @param {string}opt.type http连接的方式，包括POST和GET两种方式
 * @param {string}opt.url 发送请求的url
 * @param {boolean}opt.async 是否为异步请求，true为异步的，false为同步的
 * @param {object}opt.data 发送的参数，格式为对象类型
 * @param {function}opt.success ajax发送并接收成功调用的回调函数
 */
    function ajax(opt) {
        opt = opt || {};
        opt.method = opt.method.toUpperCase() || 'POST';
        opt.url = opt.url || '';
        opt.async = opt.async || true;
        opt.data = opt.data || null;
        opt.success = opt.success || function () {};
        var xmlHttp = null;
        if (XMLHttpRequest) {
            xmlHttp = new XMLHttpRequest();
        }
        else {
            xmlHttp = new ActiveXObject('Microsoft.XMLHTTP');
        }var params = [];
        for (var key in opt.data){
            params.push(key + '=' + opt.data[key]);
        }
        var postData = params.join('&');
        if (opt.method.toUpperCase() === 'POST') {
            xmlHttp.open(opt.method, opt.url, opt.async);
            xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;charset=utf-8');
            xmlHttp.send(postData);
        }
        else if (opt.method.toUpperCase() === 'GET') {
            xmlHttp.open(opt.method, opt.url + '?' + postData, opt.async);
            xmlHttp.send(null);
        } 
        xmlHttp.onreadystatechange = function () {
            if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
                opt.success(xmlHttp.responseText);
            }
        };
    }

调用代码

ajax({
    method: 'POST',
    url: 'test.php',
    data: {
        name1: 'value1',
        name2: 'value2'
    },
    success: function (response) {
       console.log(response)；
    }
});

Jquery返回顶部

    $("#back-to-top").click(function(){
        $('body,html').animate({scrollTop:0},1000);
        return false;
    });

Js原生无缝向上滚动效果

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<meta name="description" content="">
<meta name="keywords" content="">
<style>
*{margin:0;padding:0}
#slide{position:absolute;height:300px;width:260px;color:#FA8E93;overflow:hidden;border:1px solid #ccc}
#slide p{height:34px;line-height:34px;overflow:hidden}
#slide span{float:right}
</style>
</head>
<body>

<div id="slide">
    <div id="slide1">
        <p><span>领取了烈焰双11礼包</span>1、dqx5***</p>
        <p><span>领取了烈焰双11礼包</span>2、s376***</p>
        <p><span>领取了街机三国双11礼包</span>3、sdk1***</p>
        <p><span>领取了烈火战神双11礼包</span>4、说好〃不沋伤</p>
        <p><span>领取了街机三国双11礼包</span>5、说好〃不沋伤</p>
        <p><span>领取了烈焰双11礼包</span>6、gao6***</p>
        <p><span>领取了街机三国双11礼包</span>7、ando***</p>
        <p><span>领取了街机三国双11礼包</span>8、6813***</p>
        <p><span>领取了烈焰双11礼包</span>9、lais***</p>
    </div>
    <div id=slide2></div>
</div>

<script>
    var speed=40
    var slide=document.getElementById("slide");
    var slide2=document.getElementById("slide2");
    var slide1=document.getElementById("slide1");
    slide2.innerHTML=slide1.innerHTML
    function Marquee(){
        if(slide2.offsetTop-slide.scrollTop<=0)
            slide.scrollTop-=slide1.offsetHeight
        else{
            slide.scrollTop++
        }
    }
    var MyMar=setInterval(Marquee,speed)
    slide.onmouseover=function(){clearInterval(MyMar)}
    slide.onmouseout=function(){MyMar=setInterval(Marquee,speed)}
</script>

</body>
</html>

向上滚动效果自写

<ul class="Obtain_nr_rt">
    <img src="__PUBLIC__/home/index1/img/yts_03.jpg" width="232" height="140">
    <h3>新增就业</h3>
    <ul id="news-container">
<volist name="jiuye" id="j">
    <li><a href="javascript:;"><span class="Obt_rt_1">{$j.name}</span><span class="Obt_rt_1">{$j.xueli}</span><span class="Obt_rt_2">{:cutr($j['gongsi'],3)}</span><span class="Obt_rt_3">月薪{$j.xinzi}</span></a></li>
</volist>
</ul>
  <script>
      function  ss() {
        var a=$('#news-container ').children('li:first-child');
          var b=$('#news-container ').children('li:first-child');
        $(a).animate({marginTop:'-30px'},1000,function(){
            $(a).remove();
          $(b).css('marginTop','0px');
            $('#news-container').append(b);
        });
    }setInterval(ss,1100);
  </script>

JS控制H5中的video标签播放暂停

<div class="even-banner" style="position: relative;">
    <ol class="main-1200">
        <img src="__PUBLIC__/home/zt/yexiao/img/eav_03.png" class="even_vis">
        <img src="__PUBLIC__/home/zt/yexiao/img/eav_06.gif" class="even_vis1">

        <dl class="even_deo">
            <video id="vid"  class="video_sp" height="280" width="495;" loop  >
                <source src="__PUBLIC__/home/zt/yexiao/222.mp4" type="video/mp4">
                你的浏览器不支持
            </video>

        </dl>
    </ol>
     <img id="play" src="__PUBLIC__/home/zt/yexiao/img/play.png" style="display:block;cursor: pointer;top:500px;left:820px;z-index: 999999;position:absolute;">
<script>//视频播放
    var myVideo=document.getElementById('vid');
    $('#play').click(function(){
        myVideo.play();
        $(this).hide();
    });
    $('#vid').click(function(){

        if (myVideo.paused) {
            myVideo.play();
            $('#play').hide();
        }else {
            myVideo.pause();
            $('#play').show();
        }
    });
</script>

代替表单中number效果

手机号：<input type="text" name="phone" id="phone" value="" onkeyup="f(this);"/>
<script>
        
function f(obj) {
    if (!obj.value.match(/^\d+$/)) {
        if(obj.value==""){obj.value = 0;
        }else{obj.value = obj.defaultValue;}
    } else {obj.defaultValue = obj.value;}
}
</script>

判断身份证号

<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <title>身份证号码的正则表达式及验证详解（JavaScript，Regex）方案2测试</title>
</head>
<body>
<div id="main"></div>
<script>
    console.log = function(val) {
        document.getElementById("main").innerHTML += val +"<br />";
    }
    var checkCode = function (val) {
        var p = /^[1-9]\d{5}(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/;
        var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];
        var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ];
        var code = val.substring(17);
        if(p.test(val)) {
            var sum = 0;
            for(var i=0;i<17;i++) {
                sum += val[i]*factor[i];
            }
            if(parity[sum % 11] == code.toUpperCase()) {
                return true;
            }
        }
        return false;
    }
    var checkDate = function (val) {
        var pattern = /^(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)$/;
        if(pattern.test(val)) {
            var year = val.substring(0, 4);
            var month = val.substring(4, 6);
            var date = val.substring(6, 8);
            var date2 = new Date(year+"-"+month+"-"+date);
            if(date2 && date2.getMonth() == (parseInt(month) - 1)) {
                return true;
            }
        }
        return false;
    }
    var checkProv = function (val) {
        var pattern = /^[1-9][0-9]/;
        var provs = {11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江 ",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北 ",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏 ",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门"};
        if(pattern.test(val)) {
            if(provs[val]) {
                return true;
            }
        }
        return false;
    }
    var checkID = function (val) {
        if(checkCode(val)) {
            var date = val.substring(6,14);
            if(checkDate(date)) {
                if(checkProv(val.substring(0,2))) {
                    return true;
                }
            }
        }
        return false;
    }
    //输出 true
    console.log(checkID("11010519491231002X"));
    //输出 false，校验码不符
    console.log(checkID("110105194912310021"));
    //输出 false，日期码不符
    console.log(checkID("110105194902310026"));
    //输出 false，地区码不符
    console.log(checkID("160105194912310029"));
</script>
</body>
</html>

JS判断富文本的真实长度

var params = $(this).serializeArray();
var values = {};
for(var x in params ) {
    if(params[x].name=='content'){
        values[params[x].name] = CKEDITOR.instances.editor.getData();
        var len = 0;
        var content=values[params[x].name];
        var pres = content.match(/<pre*.?>(.*?)<\/pre>/g);
        content=  content.replace(/<pre*.?>(.*?)<\/pre>/g,"");
        if(pres)
        len += pres.join("").length;
        len += content
            .replace(/\s+/g," ")               //将多个空字符换成一个空格
            .replace(/<br\s*?\/?>/g,".")       //将所有换行符替换成一个字符(不用\n是因为可能会被后面换掉)
            .replace(/(<\/p>)/g,".$1")         //为所有段落添加一个字符(或两个字符，自己定)将点放在前面避免影响后面的替换
            .replace(/<\/.+?>\s*<[^\/]>/g,"") //去掉所有尾-首相连的HTML标签(包括中间的空字符)
            .replace(/<.+?>/g,"")             //去掉剩下的HTML标签
            .replace(/&.+?;/g,".")            //转换所有实体为一个字符
            .length;
            if(len <10){
            swal({title: "你回复的字数太少",
                type: "error", timer:1400, showConfirmButton:false,});
            return false;
            }
        }else{
            values[params[x].name] = params[x].value;
        }

Js和Jquery选中

js原生选中select的值，设置selected索引的值（相当于select第1个options设置选中）

var shiting=document.getElementById('shiting');
shiting.options.selectedIndex=parseInt(1);

Jquery设置内容为’启东’的text文本为选中

$("#update_pid").find("option[text='"+result.pid+"']").attr("selected",true);

JQuery设置value为1的为选中状态

$("#update_pid").find("option[value='"+result.pid+"']").attr("selected",true);

jquery获取选中的文本

$('#pid').find("option:selected").text();

js原生checked多选款选中

document.getElementById("u"+[arr[i]]).checked=true;

JQuery遍历多选框设置false

$("[name='call[]']:checkbox").each(function () {
    $(this).attr("checked", false);
});

缓存

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no">
        <title></title>
        <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
    </head>
    <body>
        <video id="myvideo" width="100%" height="100%" controls="controls" poster="img/cars.png">
            <source src="cars.mp4" type="video/mp4"></source>
        </video>
    <script type="text/javascript">
        var video = document.getElementById('myvideo');
        
        var currentTime = localStorage.getItem("currentTime");
        console.log(currentTime);
        video.addEventListener("loadedmetadata",function(){
            this.currentTime = currentTime;
        });
        
        video.addEventListener("timeupdate",function(){
            var currentTime = Math.floor(video.currentTime);
            localStorage.setItem("currentTime",currentTime);
            console.log(localStorage.getItem("currentTime"));
        });
    </script>
    </body>
</html>
Last modification：January 8, 2020
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