IE7 Javascript和使用字符串数组 [英] IE7 Javascript and using string as an array

问题描述

怪异的行为，我只是张贴了这个问题，看看是否有人知道这还是我的code是完全错误的原因：

Weird behavior and I'm just posting this question to see if anyone knows the reason for this or whether my code is just plain wrong:

string text = "~"; //yip, let's take some weird character
alert(text[0]);
//all major browsers output "~"
//IE6 & 7: undefined
alert(text.charAt(0));
//works in all browsers

现在我的问题是：使用文本在IE7不支持的阵列，是code错一般是OK使用 .charAt（我）而不是字符串[我] ？

Now my question is: Is using a text as an array not supported in IE7, is the code wrong in general and is it OK to use .charAt(i) instead of string[i]?

PS：有<一个href=\"http://stackoverflow.com/questions/2526019/simple-javascript-string-problem-in-ie6-and-ie7\">some那个谁回答了有关正是这种了自己的问题。我的问题是：究竟是怎么记录？这是一个普通的IE虫？

PS: There is some guy who answered his own question regarding exactly this. My question remains: Where is this documented? Is this a regular IE "bug"?

推荐答案

访问字符串数组一样不标准在ECMAScript中3：

Accessing string array-like is not standard in ECMAScript 3:

<一个href=\"https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String#section_5\">https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String#section_5

阵列状字符访问（上面的第二个方法）是不的一部分
  ECMAScript的3这是一个JavaScript和ECMAScript 5功能。

Array-like character access (the second way above) is not part of ECMAScript 3. It is a JavaScript and ECMAScript 5 feature.

你做什么是分割字符串：

What you do is split the string:

var textChars = text.split('');
alert(textChars[0]);

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