阵列["属性"]。 [英] array.["property"]
问题描述
大家好，
这意味着什么是奇怪的sintax（看看对象:)？
如果我有ie array.length我可以使用数组。[" length"]是
IE / Firefox兼容??
尝试不带点：
数组[''length'']与array.length相当。
11月21日，上午8:09，josh < xdevel2 ... @ yahoo.comwrote：
大家好，
这意味着什么是奇怪的sintax（看看对象:)？
如果我有ie array.length我可以使用数组。["长度"]并且是
IE / Firefox兼容？
josh写道：
大家好，
什么它是否意味着奇怪的sintax（看看对象:)？
如果我有ie array.length我可以使用数组。[" length"]并且它是
IE / Firefox兼容??
array [" length"]相当于array.length
在javascript中，一个对象与一个关联数组相同，它使得数组和对象之间的形式差异变得模糊。
这是由ECMA-262标准，因此与所有浏览器和所有javascript引擎兼容
。
数组。["长度"]（注意点）是语法错误。一些javascript
解析器*可以*容忍它，但你*不应该依赖它。
-
Martijn Saly
josh说：
>
大家好，
这意味着什么奇怪的sintax（看对象:)？
你似乎的意思是看看主题，这对于某些新闻阅读者来说是一件令人讨厌的事情。不要让人们阅读这个主题，而他们正在阅读这条消息。
> if我有ie array.length我可以使用数组。[" length"]并且它是IE / Firefox兼容吗？
不，你不能在任何浏览器中使用这种语法，但你应该使用：
能够使用：array ["长度在任何一个。没有点。
您可以使用此表示法来访问任何对象的属性。
-
Hi all,
what does it meaning that strange sintax (look at the object :) ?
if I have i.e. array.length I can use array.["length"] and is it
IE/Firefox compatible??
Try it without the dot:
array[''length''] is equivilant to array.length.
On Nov 21, 8:09 am, "josh" <xdevel2...@yahoo.comwrote:Hi all,
what does it meaning that strange sintax (look at the object :) ?
if I have i.e. array.length I can use array.["length"] and is it
IE/Firefox compatible??
josh wrote:Hi all,
what does it meaning that strange sintax (look at the object :) ?
if I have i.e. array.length I can use array.["length"] and is it
IE/Firefox compatible??
array["length"] is equivalent to array.length
In javascript, an object is the same as an associative array, which
makes the formal difference between arrays and objects blurry.
This is defined by the ECMA-262 standard, and is thus compatible with
all browsers and all javascript engines.
array.["length"] (mind the dot) is a syntax error. Some javascript
parsers *may* tolerate it but you *shouldn''t* count on it.
--
Martijn Saly
josh said:>
Hi all,
what does it meaning that strange sintax (look at the object :) ?You seem to mean "look at the subject", and that''s a nuisance with
some newsreaders. Don''t ask people to read the subject while
they''re reading the message.
>if I have i.e. array.length I can use array.["length"] and is it
IE/Firefox compatible??No, you can''t use that syntax in any browser, but you should be
able to use: array["length"] in any. There''s no "dot".
You can use this notation to access attributes of any Object.
--
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