在此页

• 句法
• 描述
• 范例
• 规范
• 浏览器兼容性
• Compatibility notes
• 另请参阅
• 相关话题

Deprecation warning: Do not use unwatch() and watch() ! These two methods were implemented only in Firefox prior to version 58, they're deprecated and removed in Firefox 58+ . In addition, using watchpoints has a serious negative impact on performance, which is especially true when used on global objects, such as window . You can usually use setters and getters or proxies 代替。

unwatch() method removes a watchpoint set with the watch() 方法。

句法

obj.unwatch(prop)
					

参数

prop

The name of a property of the object to stop watching.

返回值

undefined .

描述

The JavaScript debugger has functionality similar to that provided by this method, as well as other debugging options. For information on the debugger, see Venkman .

By default, this method is inherited by every object descended from Object .

注意： The reason for unwatch() to take the property name prop as its only parameter is due to the "single handler allowing" behavior of the watch() 方法。

范例

见 watch() .

规范

Not part of any standard.

浏览器兼容性

Not supported anywhere. Historically supported in Firefox 1 till 57.

Compatibility notes

• 调用 unwatch() on the Document object throws a TypeError since Firefox 23 ( bug 903332 ). This regression has been fixed with Firefox 27.

另请参阅

• Object.watch()

元数据

• 最后修改： Apr 28, 2020

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