javascript 如何访问包含特殊字符的对象属性？
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How to access object properties containing special characters?
提问by user1673257
I have a formDOM element:
我有一个formDOM 元素：
var virDom = document.getElementsByTagName("form")[0];
virDomhas two fields with IDs creditIdand pwdId... I can access virDom.creditIdwithout any issue but, virDom.pwdId..is failing with a syntax error, because of the periods contained in the name.
virDom有两个带有 IDcreditId和 的字段pwdId..。我可以virDom.creditId毫无问题地访问，但是virDom.pwdId..由于名称中包含句点而失败并出现语法错误。
How can I access such properties?
我如何访问这些属性？
回答by Niet the Dark Absol
Use bracket notation:
使用括号表示法：
virDom['creditId']
virDom['pwdId..']
This applies to any object, and it is particularly useful for non-identifier-safe characters and also for accessing keys that you may not know ahead of time.
这适用于任何对象，对于非标识符安全的字符以及访问您可能事先不知道的密钥特别有用。
