<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Document</title></head><body><div style="position: fixed;left: 50%;top: 50%;margin-left: -150px;margin-top: -150px; width:300px;height:300px;background:#eee;">? ? <div ?style="position: relative; width: 173px; ">? ? <label for="" id="ipt" style="position: absolute;left: 5px;top: 0;color: #999; ">請輸入用戶名</label>? ? <input type="text" id="uname" name="uname" style="z-index: 1;" onFocus="hide()" onBlur="show()"/>? ? </div></div><script type="text/javascript">? ? function hide() {? ? ?var ipt=document.getElementById("ipt");? ? ?ipt.style.display="none";? ? }? ? function show() {? ? ?var ipt=document.getElementById("ipt");? ? ?var name=document.getElementById("uname");? ? ?if(name.value.length>0){? ? ?ipt.style.display="none";? ? ?}? ? ?else{? ? ?ipt.style.display="block";? ? }? ? }</script></body></html>
用label定位控制輸入框提示語,但是點擊文字無法進入輸入狀態，怎么處理??？？？？
就醬ba
2016-06-06 13:55:50