介绍：仿照留言板写一个类似的实例，具有添加、删除的简单功能
思路：点击发布按钮，利用DOM操作进行元素添加【appendChild()】，点击删除按钮，利用DOM找到父节点，进行删除【removeChild()】
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.liuyan{width: 70%;height: 150px;box-sizing: border-box;border: 1px dashed aqua;margin-bottom: 15px;}
.pic{width: 150px;height: 150px;float: left;}
.text{width:400px;height: 150px;float: left;}
.delete{height: 150px;float: left;}
</style>
</head>
<body>
<div id="demo" style="width: 65%;margin: 0 auto;">
<div>
<textarea rows="6" cols="80" id="content"></textarea>
<button id="submit">发布</button>
</div>
<div class="liuyan">
<div class="pic"><img src="img/703.jpg" width="150" height="150"></div>
<div class="text">努力学习，让学习成为一种习惯</div>
<div class="delete"><input type="button" name="del" value="删除" onclick="del(this)"></div>
</div>
<div style="clear: both;"></div>
</div>
<script>
var demo = document.getElementById(‘demo‘);
var submit = document.getElementById(‘submit‘);
submit.addEventListener(‘click‘,add);
function add(){
var content = document.getElementById(‘content‘).value;
var div = document.createElement(‘div‘);
div.setAttribute(‘class‘,‘liuyan‘);
//
var div1 = document.createElement(‘div‘);
var div2 = document.createElement(‘div‘);
var div3 = document.createElement(‘div‘);
div1.setAttribute(‘class‘,‘pic‘);
div2.setAttribute(‘class‘,‘text‘);
div3.setAttribute(‘class‘,‘delete‘);
div.appendChild(div1);
div.appendChild(div2);
div.appendChild(div3);
//
var img = document.createElement(‘img‘);
img.setAttribute(‘src‘,‘img/703.jpg‘);
img.setAttribute(‘width‘,‘150‘);
img.setAttribute(‘height‘,‘150‘);
div1.appendChild(img);
//
var del = document.createElement(‘input‘);
del.setAttribute(‘type‘,‘button‘);
del.setAttribute(‘name‘,‘del‘);
del.setAttribute(‘value‘,‘删除‘);
del.setAttribute(‘onclick‘,‘del(this)‘);
div3.appendChild(del);
//
div2.innerHTML = content;
demo.appendChild(div);
alert(‘发布成功‘);
}
function del(obj){
var del = obj.parentNode;
var liuyan = del.parentNode;
var demo = liuyan.parentNode;
demo.removeChild(liuyan);
}
</script>
</body>
</html>
原文地址：https://www.cnblogs.com/whs5280/p/9750771.html
时间： 2024-08-28 02:58:46