The front BOM objects

location.href view the current url

location.href http://www.baidu.com jump URL

location.reload reload the current page

windows.alert ( 'Hello') prompts,

document.body.coneditable = true can edit the page

confirm ( "Have you eaten yet?") pop-up selection box

prompt ( "balloon") 

Timer:

　　setTimeout ( "alert (123);", 5) | setTimeout ( "js statement;" ms)