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#8572 closed bug (invalid)

Opened March 20, 2011 09:37PM UTC

Closed March 20, 2011 10:46PM UTC


Reported by: hidespb Owned by:
Priority: undecided Milestone:
Component: unfiled Version: 1.5.1
Keywords: Cc:
Blocked by: Blocking:

Hi! here's some kinda of bug i've found a few days ago:

1. Change Object's prototype:

Object.prototype.somefunc = foo() {bar;}

2. Try to create an element:

var div = $('<div/>', {
	class: 'someclass'

3. Browser throws an Exception:

'TypeError: doc.createElement is not a function'

Reason for this exception is located at line 138:

if ( ret ) {
	if ( jQuery.isPlainObject( context ) ) {
		selector = [ document.createElement( ret[1] ) ]; selector, context, true );

	} else {
		selector = [ doc.createElement( ret[1] ) ];


jQuery.isPlainObject return false on a object having it's prototype modified. In normal case jQuery should use document.createElement, but in case of abnormal return it uses doc.createElement instead.

p.s. sry for bad english

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Change History (1)

Changed March 20, 2011 10:46PM UTC by dmethvin comment:1

resolution: → invalid
status: newclosed

1) Don't modify Object.prototype because jQuery doesn't support pages that do this.

2) Don't use a bareword class for a property name because it is a JavaScript reserved word. Either quote the name or use className instead.