jquery - Javascript returning Uncaught TypeError: Cannot call method 'indexOf' of undefined -


i have facebook friend invite sender , following code returning , error.

iframehtml = $myjq('#polldaddy_embed_0').html();                           if (iframehtml.indexof("facebook") === -1) {                               iframehtml = iframehtml.replace("fb_id=","fb_id="+window.uid);                               iframehtml = iframehtml.replace("?q_3826051_url=","&q_3826051_url="+encodeuricomponent(window.url));                               $myjq('#polldaddy_embed_0').html(iframehtml);                           if (window.total>=5) {                                $myjq('#fb_first5_id').trigger('click');                           }                        }

the error getting is:

uncaught typeerror: cannot call method 'indexof' of undefined

that tells element id polldaddy_embed_0 didn't exist when code ran. if call $() selector doesn't match anything, empty jquery set; if call html on empty jquery set, undefined, you're storing in iframehtml variable. try call indexof using variable, , error.


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