Warning: file_get_contents(/data/phpspider/zhask/data//catemap/9/javascript/380.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
JavaScript:Post-can';不发送参数?_Javascript_Html_Http_Post - Fatal编程技术网

JavaScript:Post-can';不发送参数?

JavaScript:Post-can';不发送参数?,javascript,html,http,post,Javascript,Html,Http,Post,在我的网页中,我尝试通过JavaScript发送参数 当我收到请求时,我发现参数为null? 我很确定,请求可以成功发送,因为我可以收到请求 我不知道为什么错了,这是我的代码: <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <meta http-equiv="Expires" content="0"> <meta h

在我的网页中,我尝试通过JavaScript发送参数

当我收到请求时,我发现参数为null? 我很确定,请求可以成功发送,因为我可以收到请求

我不知道为什么错了,这是我的代码:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<meta http-equiv="Expires" content="0">
<meta http-equiv="kiben" content="no-cache">
<title>Login Page</title>
<script type="text/javascript">
function GetCookie (name) 
{ 
    var arg = name + "="; 
    var alen = arg.length; 
    var clen = window.document.cookie.length; 
    var i = 0; 
    while (i < clen) 
    { 
        var j = i + alen; 
        if (window.document.cookie.substring(i, j) == arg) return getCookieVal (j); 
        i = window.document.cookie.indexOf(" ", i) + 1; 
        if (i == 0)
            break; 
    } 
    return null;
}
function getCookieVal (offset)
{ 
    var endstr = window.document.cookie.indexOf (";", offset); 
    if (endstr == -1)
        endstr = window.document.cookie.length; 
    return unescape(window.document.cookie.substring(offset, endstr));
}
function SetCookie (name, value)
{ 
    var exp = new Date(); 
    exp.setTime(exp.getTime() + (30*24*60*60*1000));
    window.document.cookie = name + "=" + escape (value) + "; expires=" + exp.toGMTString()+";path=/";
}
function DeleteCookie (name)
{ 
    var exp = new Date(); 
    exp.setTime (exp.getTime() - 100); 
    var cval = GetCookie (name); 
    window.document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString()+";path=/";
}

function DelCookie()
{
    DeleteCookie(document.getElementById("username").value);
}
function remember()
{
    if(document.getElementById("remember").checked){
        SetCookie(document.getElementById("username").value,document.getElementById("password").value);
        alert("Saved!");
    }   
    createForm();
}
function showpassword()
{
     var p=GetCookie(document.getElementById("username").value);
     if(p!=null)
    document.getElementById("password").value= p;
}
function createForm(){
     var form = document.createElement("form");
     form.method="post";
     form.action="login";
     var usernmae = document.getElementById("username");
     var pwd = document.getElementById("password");
     var hiddenField = document.createElement("input");
     hiddenField.setAttribute("type", "text");
     hiddenField.setAttribute("username",username.value);
     hiddenField.setAttribute("password",pwd.value);
     form.appendChild(hiddenField);  
     document.body.appendChild(form);
     form.submit();
}
</script>
</head>
<body>

        UserName:<input type="text" id="username" onblur="showpassword()"><br />
        Password:<input type="password" id="password">
        <input type="checkbox" name="remember" id="remember">
        </input>Remeber Username<br />
        <input value="Submit" type="button" onClick="remember()"> 
        <input value="Delete" type="button" onClick="DelCookie()">
</body>
</html>

登录页面
函数GetCookie(名称)
{ 
var arg=name+“=”;
var alen=arg.length;
var clen=window.document.cookie.length;
var i=0;
而(我
密码:
记住用户名

您缺少了
表单中最重要的元素。。
表单本身就是这样的

如何将输入包装在一个大的
子句中。

您应该在HTML中使用
标记来完成此操作,而不是通过编程方式创建表单

<body>
    <form action="login" method="POST">
        UserName:<input type="text" id="username" onblur="showpassword()"><br />
        Password:<input type="password" id="password">
        <input type="checkbox" name="remember" id="remember">
        </input>Remeber Username<br />
        <input value="Submit" type="button" onClick="remember()"> 
        <input value="Delete" type="button" onClick="DelCookie()">
    </form>
</body>

用户名:
密码: 记住用户名
如果您想这样做(在JavaScript中),应该使用createElement创建2个
input
,而不仅仅是一个

 var hiddenField = document.createElement("input");
     hiddenField.setAttribute("type", "text");
     hiddenField.setAttribute("username",username.value);
     hiddenField.setAttribute("password",pwd.value);
     form.appendChild(hiddenField);  
     document.body.appendChild(form);
     form.submit();
这样发送参数是不可能的 按表单提交发送数据需要在提交的每个html控件上设置
name属性

 var hiddenField = document.createElement("input");
         hiddenField.setAttribute("type", "text");
         hiddenField.setAttribute("name","username");
         hiddenField.setAttribute("value",username.valuee);
         form.appendChild(hiddenField);

var hiddenField2 = document.createElement("input");
         hiddenField2.setAttribute("type", "text");
         hiddenField2.setAttribute("name","password");
         hiddenField2.setAttribute("value",pwd.value);
         form.appendChild(hiddenField2);

         document.body.appendChild(form);
         form.submit();