用js改变div2的css 实现窗口的隐藏显示
<!DOCTYPE html><html><head><meta charset="UTF-8"><title>div的显示隐藏</title></head><style type="text/css">.div1{width:100px;height:100px;background:red;}.div2{width:100px;height:100px;background:green;display:none}</style><body><div class="div1" onclick="changeCss()">点击显示div2</div><div class="div2" id="div2">我是div2 且3秒后消失</div><script type="text/javascript">function changeCss(){//获取div2var div2 = decument getElementById('div2')//div2 显示div2.style.display = "block";//三秒后隐藏setTime(function(){div2.style.display = "none";},3000);}</script></body></html>
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