表单提交，新页面获取信息BOM操作BOM操作BOM操作BOM操作BOM操作BOM操作BOM操作BOM操作BOM操作BOM


//login.html
 <form action="index.html">
        用户名：<input type="text" name="uname">
        <input type="submit" value="登录">
    </form>
//index.html
 <div></div>
    <script>
       console.log(location.search); 
       var params = location.search.substr(1);
       console.log(params);
       var str = params.split("=");
       console.log(str);
       var uname = str[1];
       var div = document.querySelector('div');
       div.innerHTML = uname+'欢迎您';
    </script>```