js实现表格拖动选项

本文实例为大家分享了js实现表格拖动选项的具体代码，供大家参考，具体内容如下
题目要求如下图所示，具体思路：拖动改变选择项，用的的事件是js的拖动相关事件。
js实现表格拖动选项
代码：
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        ul,li{
            list-style: none;
            cursor: pointer;
        }
        .specWrap{
            width: 800px;
            margin: 0 auto;
            user-select: none;
        }
        .specification{
            border: 1px solid #ccc;
            width: 100%;
            position: relative;
        }
        .sp-top{
            height: 60px;
            line-height: 60px;
            text-align: center;
            box-sizing: border-box;
        }
        .sp-top ul{
            overflow: hidden;
        }
        .sp-top ul li{
            width: 33%;
            float: left
        }
        .sp-top ul li:nth-of-type(2){
            border-left: 1px solid #ccc;
            border-right: 1px solid #ccc;
        }
        .sp-cen{
            text-align: left;
            box-sizing: border-box;
            border-bottom: 1px solid #ccc;
            border-top: 1px solid #ccc;
            text-indent: 20px;
            overflow: hidden;
        }
        .screen{
            width: 33%;
            float: left;
        }
        .screen:nth-of-type(2){
            border-left: 1px solid #ccc;
            border-right: 1px solid #ccc;
        }
        .sp-btm{
            text-align: left;
            box-sizing: border-box;
            text-indent: 20px;
            overflow: hidden;
        }
        .resolution{
            width: 33%;
            float: left;
        }
        .resolution:nth-of-type(2){
            border-left: 1px solid #ccc;
            border-right: 1px solid #ccc;
        }
        .btn{
            float: right;
            width: 60px;
            margin: 20px 0;
        }
    </style>
</head>
<body>
<div class="specWrap">
    <div class="specification">
        <div class="sp-top">
            <ul>
                <li>SPECIFICATIONS功能</li>
                <li>LEVELS规格</li>
                <li>SELECTED选择</li>
            </ul>
        </div>
        <div class="sp-cen">
            <div class="screen">
                <p>Screen size屏幕大小</p>
            </div>
            <div class="screen">
                <ul class="size">
                    <li>4</li>
                    <li>4.5</li>
                    <li>5</li>
                    <li>5.5</li>
                    <li>6</li>
                    <li>6.5</li>
                </ul>
            </div>
            <div class="screen sc"></div>
        </div>
        <div class="sp-btm">
            <div class="resolution">
                <p>Screen resolution屏幕分辨率</p>
            </div>
            <div class="resolution">
                <ul class="resolu">
                    <li>High definition (720p)</li>
                    <li>Full HD (1080p)</li>
                    <li>Quad HD (2K) 四倍高清（2K）</li>
                    <li>Ultra HD (4K) 超高清（4K）</li>
                </ul>
            </div>
            <div class="resolution re"></div>
        </div>
    </div>
    <div>
        <button class="btn">提交</button>
    </div>
</div>

</body>
<script>
    var size=document.getElementsByClassName('size')[0].children;  //size列表
    var resolu=document.getElementsByClassName('resolu')[0].children; //分辨率列表
    var specWrap=document.getElementsByClassName('specWrap')[0];
    for(let i=0;i<size.length;i++){  //size选择
        size[i].function (e) {  //按下事件
            for(var i=0;i<size.length;i++){
                size[i].style.position='';
                size[i].style.background='';
            }
            var e=e||event;
            var lf=e.offsetX;
            var tp=e.offsetY;
            var current=this;
            current.style.position='absolute';
            document.function(e){  //移动事件
                var e=e||event;
                var x=e.clientX-specWrap.offsetLeft-lf;
                var y=e.clientY-specWrap.offsetTop-tp;
                current.style.left=x+'px';
                current.style.top=y+'px';
            }
            document.function(){  //鼠标释放事件
                document.null;
                document.getElementsByClassName('sc')[0].innerHTML=current.innerHTML;
                current.style.position='';
            }
        }
    }


    for(let i=0;i<resolu.length;i++){  //resolution选择，可以进行代码封装，在这我就不封装了
        resolu[i].function (e) {
            for(var i=0;i<resolu.length;i++){
                resolu[i].style.position='';
                resolu[i].style.background='';
            }
            var e=e||event;
            var lf=e.offsetX;
            var tp=e.offsetY;
            var current=this;
            current.style.position='absolute';
            current.style.zIndex=6;
            document.function(e){
                var e=e||event;
                var x=e.clientX-specWrap.offsetLeft-lf;
                var y=e.clientY-specWrap.offsetTop-tp;
                current.style.left=x+'px';
                current.style.top=y+'px';
            }
            document.function(){
                document.null;
                document.getElementsByClassName('re')[0].innerHTML=current.innerHTML;
                current.style.position='';
            }
        }
    }
</script>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持NICE源码。
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