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JavaScript - convert string to integer
3 points
In this article, we can find different ways how to parse integer numbers with parseInt function in JavaScript.
This section shows how to convert with built-in parseInt method some text to an integer.
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var text = '123';2
var number = parseInt(text);3
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console.log(number === 123); // trueUsing the parseInt() method we can also parse floating point number and it will be rounded to an integer, look at the below example.
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var text = '123.12';2
var number = parseInt(text);3
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console.log(text);5
console.log(number);6
console.log(number === 123); // trueparseInt method during conversion ignores all characters that are not digits and occur after the number. It makes it possible to parse numbers with units.
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var number = parseInt('1px'); // pixels (px)2
console.log(number === 1); // true3
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var number = parseInt('2cm'); // centimeters (cm)5
console.log(number === 2); // true6
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var number = parseInt('3in'); // inches (in)8
console.log(number === 3); // true9
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var number = parseInt('4%'); // percentages (%)11
console.log(number === 4); // true