Use JavaScript to get parameter values from URL

Source: Internet
Author: User
With the proliferation of Ajax, we sometimes need to get variables from the URL for user interaction. This function provides the method to obtain: function getquery (name) {var Reg = new Regexp ("(^ | &)" + name + "= ([^ &] *) (& | $)"); var r = Window. location. search. substr (1 ). match (REG); If (R! = NULL) return Unescape (R [2]); return NULL;} if you need to get the id value from the following address: http://71j.cn/a.php? A = My & id = 7 & M = 1 you only need to call getquery ("ID") on the current page.

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