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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        window.onload=function(){
        function setCookie(name,value,endDay)   //设置cookie
        {
            var oDate=new Date();
            oDate.setDate(oDate.getDate()+endDay);
            document.cookie=name+'='+value+';expires='+oDate;
        }
        function getCookie(name)                    //读取cookie
        {
            var arr = document.cookie.split ( ';'); // semicolon include a space behind
            for(i=0;i<arr.length;i++)
            {
                var arr2=arr[i].split('=');
                if(arr2[0]==name)
                return arr2[1];
            }
            return '';
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    var  oForm=document.getElementById('form1');
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        setCookie('user',oUser.value,14)
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    oUser.value=getCookie('user');
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    <form action="" id="form1">
        用户名:<input type="text" name="user" id=""><br>
        密码:<input type="password" name="pass" id=""><br>
        <input type="submit" name="" id="">
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Origin www.cnblogs.com/gasolhome/p/12331916.html