Boolean.prototype
Boolean.prototype
Boolean.prototype
属性表示Boolean
构造函数的原型。
| Boolean.prototype
属性的属性特性: |
|:----|
| Writable | no |
| Enumerable | no |
| Configurable | no |
描述
Boolean
实例继承自Boolean.prototype
。你可以使用构造函数的原型对象向所有Boolean
实例添加属性或方法。
属性
Boolean.prototype.constructor
返回创建了实例原型的函数。默认为Boolean
函数。
方法
Boolean.prototype.toSource()
返回包含Boolean
对象源码的字符串;你可以使用这个字符串来创建一个等价的对象。覆盖了Object.prototype.toSource()
方法。
规范
Specification | Status | Comment |
---|---|---|
ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.0. |
ECMAScript 5.1 (ECMA-262)The definition of 'Boolean.prototype' in that specification. | Standard | |
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'Boolean.prototype' in that specification. | Standard | |
ECMAScript Latest Draft (ECMA-262)The definition of 'Boolean.prototype' 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) |