mirror of
https://github.com/luzhisheng/js_reverse.git
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42 lines
1.4 KiB
JavaScript
42 lines
1.4 KiB
JavaScript
const Navigator = function Navigator() {
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throw new TypeError('Illegal constructor')
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}
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catvm.safefunction(Navigator);
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Object.defineProperties(Navigator.prototype, {
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[Symbol.toStringTag]: {
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value: 'Navigator',
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configurable: true,
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}
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})
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Object.getOwnPropertyDescriptor_ = Object.getOwnPropertyDescriptor;
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Object.getOwnPropertyDescriptor = function (tag, val) {
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// tag[Symbol.toStringtag]
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if (tag.toLocaleString() == '[object Navigator]') {
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return undefined;
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}
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return Object.getOwnPropertyDescriptor_.apply(this, arguments)
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}
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////////////////原型-补环境-start////////////////
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Navigator.prototype.plugins = []
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Navigator.prototype.language = ['zh-CN']
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Navigator.prototype.userAgent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36'
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////////////////原型-补环境-end//////////////////
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// 解决实例可以调用属性，但是原型对象不能调用属性
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navigator = {}
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navigator.__proto__ = Navigator.prototype
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// 遍历原型
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for (let prototype_ in Navigator.prototype) {
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// 将所有原型属性值赋值给实例属性值
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navigator[prototype_] = Navigator.prototype[prototype_]
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// hook所有的get属性值，返回报错Illegal constructor
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Navigator.prototype.__defineGetter__(prototype_, function () {
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throw new TypeError('Illegal constructor')
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})
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}
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navigator = catvm.proxy(navigator); |