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Is “finally” the answer to all IE6 memory leak issues?
Hedger Wang has been scanning a lot of Chinese blogs lately for solutions to IE6 and memory leak issues. One of the things he stumbled upon is a pretty nifty way of nulling the objects to stop memory leaks by using the try ... finally construct. So instead of this solution which leaks memory:
JAVASCRIPT:
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function createButton() {
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var obj = document.createElement("button");
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obj.innerHTML = "click me";
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obj.onclick = function() {
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//handle onclick
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}
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obj.onmouseover = function() {
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//handle onmouseover
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}
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return obj;//return a object which has memory leak problem in IE6
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}
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var dButton = document.getElementsById("d1").appendChild(createButton());
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//skipped....
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You can use the following which doesn't:
JAVASCRIPT:
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function createButton() {
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var obj = document.createElement("button");
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obj.innerHTML = "click me";
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obj.onclick = function() {
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//handle onclick
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}
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obj.onmouseover = function() {
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//handle onmouseover
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}
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//this helps to fix the memory leak issue
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try {
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return obj;
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} finally {
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obj = null;
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}
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}
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var dButton = document.getElementsById("d1").appendChild(createButton());
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}
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More demos, proof of concept examples and the "finally" explanation is available on Hedger's blog: Finally, the alternative fix for IE6's memory leak is available
Jump into JUnit 4
his tutorial guides you step-by-step through the fundamental concepts of JUnit 4, with emphasis on the new Java 5 annotations. At the conclusion of this one-hour tutorial, you will understand the major changes to JUnit 4, as well as being familiar with fe
Watir Quick Start tutorial (openqa.org)
20080208, tutorial will show if Watir is the right tool for you in just a few minutes. You already know something about Watir & HTML
Ruby
testing
Tutorial
Watir
TestDrivenDevelopment
testautomation
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