jQuery验证来自另一个域的url不起作用 [英] JQuery to validate url from another domain not working

问题描述

我是JQuery的新手.我的要求是验证来自另一个域的链接.如果成功，则重定向到该链接(在新页面中打开页面)，否则显示警报.

I am kind of new to JQuery. My requirement is to validate a link from another domain. If success, then redirect (Open the page a new window) to that link, otherwise show alert.

我在Jsfiddle中尝试过的内容如下:

What I tried in Jsfiddle are given below:

$.ajax({ 
    url: "/user/login", 
    method: 'head', 
    error: function(){ 
        alert('Failure'); 
    }, 
    success: function(){ 
        alert("Success"); 
    } 
})

以上代码成功验证了该URL.但是，一旦我将网址更改为 http://www.google.com ，它就无法正常工作.代码段如下:

The above one succesfully validated the URL. But once I changed the url to http://www.google.com, it is not working. Code snippet is given below:

$.ajax({ 
    url: "http://google.com", 
    method: 'head', 
    error: function(){ 
        alert('Failure'); 
    }, 
    success: function(){ 
        alert("Success"); 
    } 
})

有人知道为什么这行不通吗，有什么办法可以解决这个问题?我刚刚发现JQuery不支持跨域验证.是真的吗?

Any idea why this is not working and is there any way to solve that? I just found out that cross domain validation is not supported in JQuery. Is it true?

推荐答案

<script>
    var testUrl = "http://www.google1.com";
    $.ajax({ 
        url: testUrl, 
        dataType: 'jsonp',
        crossDomain: true,
        timeout: 5000,
        complete: function( e, xhr, settings ) {    
            switch( e.status ) {
               case 200:
                   window.open( testUrl );
               break;
               default:
                   alert( 'Not Valid' );
                   return false;
               break;
            }
        }   
    });
</script>

或者，我将向内部服务器端脚本发送AJAX请求，然后使用某些服务器端方法进行检查，例如PHP的cURL/get_file_contents().

Alternatively, I would send a AJAX request to an internal Server Side Script would then check using some server side methods, such as cURL/get_file_contents() for PHP.

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