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概述
回傳一個布林值，表示事件的預設行為是否被取消，也就是事件物件是否曾執行 preventDefault() 方法。
註：You should use this instead of the non-standard, deprecated
getPreventDefault() method (see bug 691151).語法
bool = event.defaultPrevented
範例
if (e.defaultPrevented) {
/* the default was prevented */
}
規範
| Specification | Status | Comment |
|---|---|---|
| DOM The definition of 'Event.defaultPrevented()' in that specification. |
Living Standard | |
| DOM4 The definition of 'Event.defaultPrevented' in that specification. |
Obsolete | Initial definition. |
瀏覽器相容性
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This compatibility table still uses the old format,
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| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 18 | 6.0 (6.0) | 9.0 | 11.0 | 5.0 |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | 6.0 (6.0) | ? | ? | 5.0 |