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Support Article

Javascript error on enabling accessibility



After enabling accessibility (PegaWAI) users are reporting the following JavaScript error while loading a portal that contains tabs.

Error Messages

'0' is null or not an object : pega_desktop_harnesstabs_12748115773.js!pega_destlop_docgadget...

Root Cause

This is happening in the "oDom[0].innerHTML = strLabel;" line below. 

pega.composite.Tab.prototype.setLabel = function(strLabel) { 
var o = this.cDom[1]; 
var id = "tabTitle"; 
if (strLabel.length > 16) 
strLabel = strLabel.substring(0,13) + "..."; 
var oDom = pega.util.Dom.getElementsBy(function(el){if ( return true; else return false;},"LABEL",o); 
if(this.isAccessible) { 
oDom = o.getElementsByTagName("a"); 
if(this.gadgetWrapper && this.gadgetWrapper.gadget) { 
this.gadgetWrapper.gadget.setAttribute("title", strLabel); 

oDom[0].innerHTML = strLabel; 
this.label = strLabel; 


HFix-10178 is available to address this problem.
Suggest Edit

Published January 31, 2016 - Updated October 8, 2020

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