How to Access JavaScript Object Properties with Special Characters?

Accessing Object Properties with Special Characters

Question:

In JavaScript, when working with DOM elements such as forms, you may encounter field names containing special characters like periods or dashes. For example, a form element with an ID of "pwdId..". How can you access properties with such special characters in a syntax error-free manner?

Answer:

To access object properties containing special characters, you can use bracket notation. This method is particularly useful when dealing with non-identifier-safe characters or when accessing keys that are not known ahead of time.

Explanation:

Bracket notation allows you to access object properties using a string. For instance, to access the "creditId" property of the form DOM element, you would use:

virDom['creditId']

Similarly, to access the "pwdId.." property, you would use:

virDom['pwdId..']

Bracket notation overrides the normal property access syntax, which can lead to syntax errors when special characters are present. Therefore, it is the preferred method for accessing properties with non-standard names.

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