php - Calling Codeigniter Controller function inside the jquery -


i want specify controller path inside .ajax function of jquery. 

type:'post',                     url:"<?php site_url('login/validate'); ?>",                     //datatype: "json",                     data:data1,                      success: function (response){                              //alert (response);                              $("span.error").html('congrats! registered our site').addclass('error');                             //window.location="site";                          },

currently doing path taken string. going success function dont know whay? when alert response gives error of "disallowed key characters"

this due url:"<?php site_url('login/validate'); ?>", create url:"",you need echo url.

  url:"<?php site_url('login/validate'); ?>",

change to

  url:"<?php echo site_url('login/validate'); ?>",

or

 url:"<?= site_url('login/validate'); ?>",

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