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如何只从文本中提取第一个 url, 使用 javascript
原标题:How to extract only first url from text with javascript

我有这个regex

function isValidURL(text) {

        var RegExp = /(ftp|http|https)://(w+:{0,1}w*@)?(S+)(:[0-9]+)?(/|/([w#!:.?+=&%@!-/]))?/;

        ......

    }

文本为 : 请使用 < a href=> "http://google.com" rel="no follow" > http://google.com , 或如果找不到任何东西在 < a href= > 上询问您的问题 http:// stackoverflow.com" > http://stackoverflow.com > http://stackoverflow.com

我只需要从下面的文字中提取第一个url。 (http://google.com)

返回为URL

最佳回答

你的意思是像这样的:

var text = "Please visit http://stackoverflow.com and ask your question, or use http://google.com";

var match = /(ftp|http|https)://(w+:{0,1}w*@)?(S+)(:[0-9]+)?(/|/([w#!:.?+=&%@!-/]))?/​​​​​​​​​​​​.exec(text)​​​​​​​;

​console.log(match[0]);​

DEMO: http://jsfiddle.net/yh5Zv/

问题回答

我认为你可以使用这个(前提是没有 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 。

var text = "Please visit http://stackoverflow.com and ask your question, or use http://google.com";

var text_split = text.split( :// ); 
var text_req = text_split[1].(" "); // splitting with blank space 

var finalURL = "http://" + test_req[0];




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