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JavaScript????????

JavaScript??BOM??

????????Browser Object Model?BOM??JavaScript???????????????????????????????????Window????????????????????

1.Window ??

Window???BOM?????????????????????????????????????????????

1.1 ?????????

???????????????????????????

• ?????????Chrome?Firefox?Safari???

  • window.innerHeight?????????????
  • window.innerWidth?????????????

• ??IE8??????

  • document.documentElement.clientHeight?????????????
  • document.documentElement.clientWidth?????????????
  • ?? document.body.clientHeight ? document.body.clientWidth

????????????????????????????

1.2 Window ?????

Window??????????????????

• open(URL, name, features, replace)

?????????????????????????

• URL????????????????????
• name????????????? <a> ? <form> ? target ??
• features??????????????????
• replace??????????????????????

?????

???????`open()` ??? `Document.open()` ??????????? `Window.open()`

close() ??

close() ??????????????????????

• ???? JavaScript ?????????
• ???????????????

?????

2.JavaScript????

JavaScript ????????????

• window.alert("sometext")??????
• window.confirm("sometext")????????????
• window.prompt("sometext", "defaultvalue")????????????? null

?????

???`window.confirm()` ?? `true` ? `false`?`window.prompt()` ?????? `null`

3.Window Screen ??

Window.screen ?????????????

• screen.width ? screen.height??????????
• screen.availWidth ? screen.availHeight????????????
• screen.colorDepth????????
• screen.pixelDepth????????

?????

4.Window Location ??

Window.location ?????????????????

• location.href???????? URL
• location.pathname??? URL ?????
• location.search??? URL ????????????
• location.assign()???????

?????

???`window.location.href` ?????????? URL?

???`window.location.href` ????? `window.location.href=("url ?string")` ???

window.location.href ?????

?????