09-May-2023
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In this post, we will learn how to convert a string to an integer in javascript. step by step explain convert a string to an
integer in javascript. you'll learn javascript parseint | convert a string to integer number. This post will give you simple example of convert a string to an integer in javascript.
To convert a string to an integer in JavaScript, you can use the `parseInt()` function. This function takes two arguments: the string to be converted and the radix (or base) of the number system being used.
Example 1:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>How to convert a string to an integer in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
let numString = "42";
let numInt = parseInt(numString);
console.log(numInt); // Output: 42
</script>
</html>
If you don't specify a radix, `parseInt()` will assume a base 10 number system. However, it's recommended to always specify the radix for clarity and consistency.
Example 2:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>How to convert a string to an integer in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
let hexString = "2A";
let hexInt = parseInt(hexString, 16);
console.log(hexInt); // Output: 42
</script>
</html>
Note that if the string cannot be converted to an integer, `parseInt()` will return `NaN` (Not a Number).
#JavaScript
