javascript - Jquery : How to prevent prefix addition to address within an `<a>` Tag -


i have html <a> tag follows: 

<a id="ext_link" href="www.google.com">google home</a>

and using jquery open link in new window. jquery below:

$(document).ready(function(){     $("#ext_link").click(function(e){         e.preventdefault();         window.open($(this).attr("href"));     }); });

when use <a id="ext_link" href="http"//www.google.com">google home</a> works fine, when use <a id="ext_link" href="www.google.com">google home</a> new window opens , addressbar contains http://localhost/app/www.google.com wrong address obviously...

how can prevent automatic addition of http://localhost/app/ @ beginning.

you can use regex test if href start http:// or https://, if not add http://:

$(document).ready(function(){     $("#ext_link").click(function(e){         e.preventdefault();         var url = $(this).attr("href");         if(!/^(http|https):\/\//.test(url)){             url = "http://" + url;         }         window.open(url);     }); });

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