Hi,
This is a simple question from a beginner in Javascript. I am
wondering if it worth to store result of getElement() in "complex"
object. Does it affect performance dramatically ?
/* In short, do you prefer this : */
{
frequentlyAccessedNode: null, // remember the frequently accessed
node
initialize: function () {
this.frequentlyAccessedNode = MochiKit.DOM.getElement('aNode');
MochiKit.Signal.connect('anOtherNode', 'onclick', this,
'doSomethingWithTheNode');
},
doSomethingWithTheNode: function () {
var i,
MD = MochiKit.DOM;
for (i = 0; i < 1000; i++) {
MD.replaceChildNodes(this.frequentlyAccessedNode, i);
}
}
}
/* ... or this ? */
{
initialize: function () {
MochiKit.Signal.connect('anOtherNode', 'onclick', this,
'doSomethingWithTheNode');
},
doSomethingWithTheNode: function () {
var i,
MD = MochiKit.DOM;
for (i = 0; i < 1000; i++) {
MD.replaceChildNodes('aNode', i);
}
}
};
In fact, I did some tests with last firefox and firebug, and I am
impressed to see that there is (almost) no difference in terms of
performance. Can you confirm that ?
Thanks
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