js实现即时编辑网页内容方法二--表格

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <table border="1" width="500" align="center" class="tab">
        <tr>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
        </tr>
        <tr>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
        </tr>
        <tr>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
        </tr>
        <tr>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
            <td>DATA</td>
        </tr>
    </table>
</body>
<script>
    var atd = document.querySelectorAll(".tab td");

    for(var i=0;i<atd.length;i++){
        atd[i].onclick = function(){
            // 点击td时创建输入框
            var ipt = document.createElement("input");
            // 将输入框的内容设置为td的内容
            ipt.value = this.innerHTML;
            // 将td清空
            this.innerHTML = "";
            // 吧ipt插入进去
            this.appendChild(ipt);
            // 自动获取焦点
            ipt.focus();

            // 为了防止ipt被点击时,事件的冒泡重复执行td的点击,所以取消冒泡
            ipt.onclick = function(eve){
                var e = eve || window.event;
                if(e.stopPropagation){
                    e.stopPropagation();
                }else{
                    e.cancelBubble = true;
                }
            }

            // 提前保存,外面的this
            var that = this;

            ipt.onblur = function(){
                // 当ipt失去焦点时,将输入框的内容设置给td,同时删除输入框
                that.innerHTML = this.value;
            }
        }
    }
</script>
</html>

 

posted @ 2020-03-25 20:48  JackieDYH  阅读(4)  评论(0编辑  收藏  举报  来源