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Home > List of blog posts > ToList留言板-2019年1月17日22点18分
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ToList留言板-2019年1月17日22点18分
kszyd的博客
Original
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实例

<!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>ToList练习</title>
</head>
<body>
    <h3>留言板</h3>
    <input type="text">
    <ul></ul>
    <script>
        var comment=document.querySelector('input');
        var ul=document.getElementsByTagName('ul')[0];
        comment.focus();
        // event 代表事件对象
        comment.onkeydown=function(event) {
              if (event.keyCode===13) {
                var li=document.createElement('li');
                li.innerHTML=comment.value+'<a href="javascrip:;" onclick="del(this)">删除</a>';
              if(ul.childElementCount===0){
                ul.appendChild(li);
              } else {
                  var first=ul.firstElementChild;
                  ul.insertBefore(li,first);
              }                
                comment.value ='';
              }              
        }
        function del(ele){
            if(confirm('要删除吗')) {
                ele.parentNode;
                var li=ele.parentNode;
                li.parentNode.removeChild(li);
            }
        }
    </script>
</body>
</html>

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Correction status：Uncorrected

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