<!DOCTYPE html><html><head> <title></title> <style type="text/css"> #div1{width: 100px;height: 100px;background-color: blue;display: none;position: absolute;z-index: 99999;} </style> <script type="text/javascript"> window.onload=function () { var oBtn1=document.getElementById('btn1'); var oDiv1=document.getElementById('div1'); oBtn1.onclick=function(){ if(oDiv1.style.display=="none"){ oDiv1.style.display="block"; }else{ oDiv1.style.display="none"; } } } </script></head><body><button id="btn1">aaa</button><br /><div id="div1"></div></body></html>
我這個為什么第一次點這個按鈕時要點兩次才能把這個div顯示出來？？
守候你守候我
2018-08-18 11:10:14