Feb 17, 2023 · So which should you use when writing JavaScript code? The main factor that will help you make your decision is the key of the property you want to access. If it is a static key, …

Apr 28, 2025 · Property accessors provide access to an object's properties by using the dot notation or the bracket notation.

Use bracket notation: When the property name is contained in a variable, e.g. obj[foo]. The property name contains characters not permitted in identifiers, e.g. starts with a digit †, or …

Mar 2, 2023 · Dot notation is preferred when the property key is a valid identifier, while bracket notation is preferred when the property key contains spaces, special characters, or is stored in …

Nov 1, 2023 · Both dot and bracket notations can be used to update properties. Dot notation is suitable for known properties, while bracket notation excels for dynamic properties.

Nov 11, 2024 · Using brackets allows JS engines to better understand and optimize your code because they evaluate the full expressions. Dot notation blocks this because engines …

Jun 13, 2022 · To use bracket notation, you write the name of the object followed by brackets and the property you want to access. For example, if we have an object called “person” with a …

Oct 19, 2017 · You can access properties on an object by specifying the name of the object followed by the property name in brackets. Here’s the syntax: objectName["propertyName"].

When working with JavaScript objects, you'll often encounter two notations for accessing and manipulating their properties: bracket notation ([]) and dot notation (.). While both methods …

Dec 27, 2019 · The two most common ways to access properties in JavaScript are with a dot and with square brackets. Both value.x and value[x] access a property on value—but not …