标签：create 数组 添加 htm button list new ali pad
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>微博发布</title>
<style type="text/css">
* {
padding: 0;
margin: 0;
}
ul {
list-style: none;
}
.box {
width: 600px;
height: auto;
border: 1px solid #ccc;
margin: 100px auto;
text-align: center;
padding: 30px 0;
background-color: #666699;
}
.box textarea {
width: 450px;
resize: none; /*设置文本不能过拖动*/
}
.box li {
width: 500px;
line-height: 30px;
border-bottom: 1px dashed #ccc;
margin-left: 80px;
text-align: left;
}
.box li a {
float: right;
}
button {
width: 60px;
height: 30px;
background-color: #ccc;
border: 1px solid #ccc;
outline: none;
}
</style>
<script type="text/javascript">
window.onload = function () {
//获取数组的第一个
var btn = document.getElementsByTagName("button")[0];
var txt = document.getElementsByTagName("textarea")[0];
var ul = document.createElement("ul");
btn.parentNode.appendChild(ul); //添加子节点
btn.onclick = function () {
//1.需要判断文本中是否有内容
if (txt.value == "") {
alert("内容不能为空");
return false;
}
var newli = document.createElement("li");
newli.innerHTML = txt.value + "<a href=‘javascript:;‘>删除</a>";
ul.appendChild(newli);
txt.value = "";
var aa = document.getElementsByTagName("a");
for (var i = 0; i < aa.length; i++) { // 遍历点击删除
aa[i].onclick = function () {
this.parentNode.remove();
}
}
}
}
</script>
</head>
<body>
<div class="box">
<p>微博发布</p>
<textarea name="" id="" cols="30" rows="10"></textarea></br>
<button>发布</button>
</div>
</body>
</html>
标签：create 数组 添加 htm button list new ali pad
原文地址：https://www.cnblogs.com/miss-yang/p/10305401.html
