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How Can I Use Variables as Property Names in JavaScript Objects?

Patricia Arquette
Patricia ArquetteOriginal
2024-11-02 03:26:02373browse

How Can I Use Variables as Property Names in JavaScript Objects?

Accessing Object Properties with Variables

Can JavaScript objects incorporate variables as property names, such as:

<code class="javascript">var myVar = "name";
var myObject = {
    {myVar}: "value"
};</code>

Solution: Computed Property Names

In ES6:
ES6 introduces computed property names, allowing the usage of expressions as property names:

<code class="javascript">var myVar = "name";
var myObject = {
    [myVar]: "value"
};</code>

In Pre-ES6:
Though not supported in object literals, you can dynamically assign properties with the [] syntax:

<code class="javascript">var myObject = {};
var myVar = "name";
myObject[myVar] = "value";</code>

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