首先是页面代码：
<body class="um-vp" ontouchstart id="con" onload="pageload()"> <input type="text" name="name" id="txtName"><br> <input type="password" name="password" id="txtPass"><br> <input type="submit" value="提交" onclick="relogin()">
</body>
加载js代码：
function $$(id){
return document.getElementById(id);
}
function pageload(){
var strName=localStorage.getItem("keyName");
var strPass=localStorage.getItem("keyPass");
if(strName){
$$('txtName').value=strName;
}
if(strPass){
$$('txtPass').value=strPass;
}
}
function relogin(){
var strName=$$('txtName').value;
var strPass=$$('txtPass').value;
localStorage.setItem('keyName',strName);
localStorage.setItem('keyPass',strPass);
}
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