How to Dynamically Generate Variable Names in JavaScript Loops: A Google Maps Example

Creating Dynamic Variable Names Using Loops

It can be advantageous to create variable names dynamically within a loop, as this allows for the creation of a series of variables in a structured way.

The Question:

A hypothetical scenario in which we need to generate dynamic variable names in a loop involves an Ajax Google Maps script. The goal is to create a sequence of variables named marker0, marker1, marker2, and so on.

The Problem:

However, attempting this using the syntax marker i results in a syntax error, as Firebug indicates that a semicolon is missing.

The Solution:

The recommended approach to create dynamic variable names is to use an array. Here's how we would achieve this:

var markers = [];
for (var i = 0; i < coords.length; ++i) {
    markers[i] = "some stuff";
}

In this solution, we create an array called markers and set its elements based on the index value i during each iteration of the loop. This conveniently generates the desired sequence of variables.

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