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Data: avoid Object.defineProperties for nodes

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Closes gh-1668
Fixes gh-1728
Ref gh-1734
Ref gh-1428
This commit is contained in:
Jason Bedard 2014-09-26 08:55:48 -07:00 committed by Timmy Willison
parent 2380028ec4
commit 95fb798980
1 changed files with 9 additions and 13 deletions
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22
src/data/Data.js
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@ -29,24 +29,20 @@ Data.prototype = {
return 0; return 0;
} }
var descriptor = {}, // Check if the owner object already has a cache key
// Check if the owner object already has a cache key var unlock = owner[ this.expando ];
unlock = owner[ this.expando ];
// If not, create one // If not, create one
if ( !unlock ) { if ( !unlock ) {
unlock = Data.uid++; unlock = Data.uid++;
// Secure it in a non-enumerable, non-writable property // If it is a node unlikely to be stringify-ed or looped over
try { // use plain assignment
descriptor[ this.expando ] = { value: unlock }; if ( owner.nodeType ) {
Object.defineProperties( owner, descriptor ); owner[ this.expando ] = unlock;
// Otherwise secure it in a non-enumerable, non-writable property
// Support: Android<4 } else {
// Fallback to a less secure definition Object.defineProperty( owner, this.expando, { value: unlock } );
} catch ( e ) {
descriptor[ this.expando ] = unlock;
jQuery.extend( owner, descriptor );
} }
} }