微软Callback中的一个Bug
今天使用微软的CallBack做控件,遇到一个奇怪的错误,调试后才发现是微软Javascript代码中的一个小Bug。
给大家提个醒。
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function WebForm_CallbackComplete() {
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for (i = 0; i < __pendingCallbacks.length; i++) {
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callbackObject = __pendingCallbacks[i];
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if (callbackObject && callbackObject.xmlRequest && (callbackObject.xmlRequest.readyState == 4)) {
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WebForm_ExecuteCallback(callbackObject);
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if (!__pendingCallbacks[i].async) {
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__synchronousCallBackIndex = -1;
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}
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__pendingCallbacks[i] = null;
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var callbackFrameID = "__CALLBACKFRAME" + i;
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var xmlRequestFrame = document.getElementById(callbackFrameID);
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if (xmlRequestFrame) {
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xmlRequestFrame.parentNode.removeChild(xmlRequestFrame);
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}
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}
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}
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}
注意其中的变量i,没有使用var 定义。如果在你的Javascript中也使用了 没有使用var定义的变量i,那就一定会出错了。呵呵。![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
给大家提个醒。
posted on 2006-11-03 14:12 sherwinzhu 阅读(473) 评论(0) 编辑 收藏 举报