W3CAPI 实例工具箱
运行代码
源代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta charset="UTF-8"> <title>JavaScript Object - unwatch () method example</title> </head> <body> <h1 style="color: red">JavaScript Object : unwatch() method</h1> <hr /> <script type="text/javascript"> //This is done to make the following JavaScript code compatible to XHTML. <![CDATA[ a = {x:10} a.watch("x", function (id,oldvalue,newvalue) { document.write("a." + id + " changed from " + oldvalue + " to " + newvalue+"<br />") return newvalue }) a.x = 20 a.x = 30 a.x = 40 // start unwatch from here a.unwatch('x') a.x = 100 document.write("Current value of x is : "+a.x) //]]> </script> </body> </html>
运行结果
友情提示
您正在使用的浏览器为IE浏览器,或者使用了IE模式
如果你使用的是IE浏览器,建议您下载
360急速浏览器
/
火狐浏览器
/
Opera浏览器