Boolean.prototype 属性表示Boolean 构造函数的原型。
Boolean.prototype 属性的属性特性: |
|
|---|---|
| writable | false |
| enumerable | false |
| configurable | false |
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。
Boolean.prototype.constructorBoolean函数。Boolean.prototype.toSource() 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。Boolean.prototype.toString()"true" 或 "false"。覆盖了 Object.prototype.toString() 方法。Boolean.prototype.valueOf()Boolean对象的原始值。覆盖了 Object.prototype.valueOf() 方法。| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.0. |
| ECMAScript 5.1 (ECMA-262) Boolean.prototype |
Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) Boolean.prototype |
Standard | |
| ECMAScript Latest Draft (ECMA-262) Boolean.prototype |
Draft |
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
prototype | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 1 | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes | nodejs Full support Yes |