javascript - Remove double http:// from input using jQuery -

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I have a text with a default value of http: // . Now when the user pastes a URL (if they do not know what they are doing, like most people) it comes out like this: http: // http: //www.google.com . I have visited a site, as soon as you have http: // http: // , it removes one by javascript.

I'm not familiar with javascript, so anyone help me?

I do not want to clear the field only on focus.

You do not need Ajax to do just that simple javascript trick to do this. 

  jquery (document) .ready (function () {jQuery ('idofurtextfield'). Blur (function () {jQuery (this) .val (jQuery (this) .val (). Replace (/ (http: \ / \ /) 1 /, '$ 1'));});});

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