我們的志工尚未將此文章翻譯為 正體中文 (繁體) 版本。加入我們，幫忙翻譯！
Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
The Number.toInteger() method used to evaluate the passed value and convert it to an integer, but its implementation has been removed.
If the target value is NaN, null or undefined, 0 is returned. If the target value is false, 0 is returned and if true, 1 is returned.
Syntax
Number.toInteger(number)
Parameters
number- The value to be converted to an integer.
Examples
Using toInteger
Number.toInteger(0.1); // 0 Number.toInteger(1); // 1 Number.toInteger(Math.PI); // 3 Number.toInteger(null); // 0
Specifications
Number.toInteger() was part of the draft ECMAScript 6 specification, but has been removed on August 23, 2013 in Draft Rev 17.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | No support | No support [1] | No support | No support | No support |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | No support | No support [1] | No support | No support | No support |
[1] This feature was supported from Firefox 16 to 32.