21 lines
680 B
Markdown
21 lines
680 B
Markdown
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---
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title: Math Trunc
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---
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## Math Trunc
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`Math.trunc()` is a method of the Math standard object that returns only the integer part of a given number by simply removing fractional units. This results in an overall rounding towards zero. Any input that is not a number will result in an output of NaN.
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Careful: This method is an ECMAScript 2015 (ES6) feature and thus is not supported by older browsers.
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### Examples
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```javascript
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Math.trunc(0.1) // 0
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Math.trunc(1.3) // 1
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Math.trunc(-0.9) // -0
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Math.trunc(-1.5) // -1
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Math.trunc('foo') // NaN
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```
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### More Information:
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* [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc)
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