How to Format Floats to Specific Decimal Places in JavaScript?

Formatting Floats in JavaScript

When converting a float to a string in JavaScript, you may encounter situations where you only require a specific number of digits after the decimal point.

Solution:

To achieve this, JavaScript offers a built-in function called toFixed():

<code class="javascript">var x = 5.0364342423;
console.log(x.toFixed(2)); // Output: 5.04</code>

In the above example, we specify 2 as the argument to toFixed(), which rounds the float to two decimal places.

Usage:

• The toFixed() function returns a string representing the rounded float.
• The argument indicates the number of decimal places to retain after rounding.

Example:

Let's consider the case where we have a float representing a percentage:

<code class="javascript">var percentage = 0.3445434;
var formattedPercentage = percentage.toFixed(2); // Output: "0.34"</code>

In this example, the formattedPercentage variable would contain the string "0.34", with only two digits after the decimal point.

Note:

The toFixed() function rounds the float using the rounding mode defined by JavaScript's implementation. This may vary across different browsers and environments.

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