Number.prototype
Number.prototype
Number.prototype属性表示Number构造函数的原型。
| Number.prototype属性的属性特性 |
|:----|
| Writable | no |
| Enumerable | no |
| Configurable | no |
描述
所有Number实例都继承自 Number.prototype。修改Number构造函数的原型对象会影响到所有 Number实例。
属性
constructor返回创建该实例对象的构造函数。默认为Number对象。
方法
Number.prototype.toExponential()返回一个使用指数表示法表示的该数值的字符串表示。
规范
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.1. |
| ECMAScript 5.1 (ECMA-262)The definition of 'Number' in that specification. | Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'Number' in that specification. | Standard | |
| ECMAScript Latest Draft (ECMA-262)The definition of 'Number' in that specification. | Living Standard | |
浏览器兼容性
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
