在发送之前验证jQuery或Javascript中的URL

时间:2013-12-06 21:03:38

标签: javascript php jquery ajax validation

我有一个基本的HTML文本区域,用于将URL粘贴到其中。将一些URL传递到文本区域后,这些URL将被发送到服务器端脚本,以便通过 AJAX 进行处理。我将把整个过程绑定到keyUp事件。

问题是:我如何知道我是否通过客户端检查向脚本发送有效的URL?我不想在没有首先在Javascript / jQuery中验证它们的情况下开始向PHP脚本发送URL。

这对于仅接受一个URL的文本区域来说很容易解决,但是文本区域需要接受由换行符分隔的多个URL。例如,我需要验证这一点:

http://someurl.com/something.ex
https://someurl.com/somethingelse.ext
I-M-NOT-AN-URL

因此,从上面可以看出,只有URL会被发送到服务器,I-M-NOT-AN-URL将被忽略。

我没有尝试任何关于这个问题的事情因为我对JS不是很熟悉,也没有找到任何东西,因为我想不出相关的搜索词,所以我在这里寻求帮助

对于如何解决这个问题的任何帮助都将不胜感激。


更新

根据下面的评论和答案,我想出了以下Javascript / jQuery。我不知道它是否有效,因此我将与您分享以获得反馈和帮助。我似乎不知道如何准备好JS中的逻辑...那是我的跛脚。

无论如何,我走了:

    var char_start  = 10;
    var index       = 0;
    var urls        = $('textarea.remote-area');
    var val_ary     = [];
    var urls_ary    = [];
    var single_url  = '';

    urls.keyup(function(){      
        if (urls.val().length >= char_start)
        {           
            var has_lbrs = /\r|\n/i.test(urls.val());
            if (has_lbrs) {
                val_ary = urls.val().split('\n');

                for (var i = 0; i < val_ary.length; i++)
                {
                    if (!validate_url(val_ary[i]))
                    {
                        continue;   
                    }

                    urls_ary[i] = val_ary[i];
                }
            }
            else
            {
                if (validate_url(urls.val()))
                {
                    single_url = urls.val();
                }
            }

            if (urls_ary.length > 0)
            {
                for (var i = 0; i < urls_ary.length; i++)
                {
                    $.ajax({
                        // do AJAX here.                            
                    }); 
                }
            }
            else
            {
                $.ajax({
                    // do AJAX here.                                
                });     
            }
        }
    });

    function validate_url(url)
    {
        if(/^([a-z]([a-z]|\d|\+|-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?((\[(|(v[\da-f]{1,}\.(([a-z]|\d|-|\.|_|~)|[!\$&'\(\)\*\+,;=]|:)+))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=])*)(:\d*)?)(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*|(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)){0})(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i.test(url)){
          return true;
        }   

        return false;
    }

1 个答案:

答案 0 :(得分:1)

jQuery validation plugin使用了这样的方法:

var anyURL = "http://www.yahoo.com/";
if(/^([a-z]([a-z]|\d|\+|-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?((\[(|(v[\da-f]{1,}\.(([a-z]|\d|-|\.|_|~)|[!\$&'\(\)\*\+,;=]|:)+))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=])*)(:\d*)?)(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*|(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)){0})(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i.test(anyURL))     {
  /* the URL is valid */
} else {
  /* the URL is invalid)
}

您可以直接使用该代码或使用validation plugin本身。

请注意:插件可能已经发展,实际代码现在不同了。尽管如此,上述内容对您有所帮助。