JavaScript runtime error: Unable to get property 'split' of undefined or null reference

Question

While debugging I got this error in my below part of code..

 queryStirngValue = document.referrer.split("myQuryString")[1].split("%")[1].split("253D")[1];
    alert(queryStirngValue);

Seems look like you having blank value in string and you are trying to perform split operation. can you check what you get in document.referrer? — Kaushal Khamar, Oct 13, 2015 at 5:03

Danny '365CSI' Engelman · Accepted Answer · 2015-10-13 08:42:38Z

1

 document.referrer.split("myQuryString")[1].split("%")

You first split on myQuryString (which by itself is misspelled?)

With [1] you then want the second array value (because arrays start at 0)

So if myQuryString is not in the QueryString you now have a null value

So

null.split("%")

causes: Uncaught TypeError: Cannot read property 'split' of undefined(…)

answered Oct 13, 2015 at 8:42

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