JavaScript constructor prototype 的相关内容

文章 2018-03-18 来自：开发者社区

第197天：js---caller、callee、constructor和prototype用法

一、caller---返回函数调用者 1 //返回函数调用者 2 //caller的应用场景主要用于察看函数本身被哪个函数调用 3 function fn() { 4 //判断某函数是否被调用 5 if (fn.caller) { 6 alert(fn.caller.toString()); 7 } else { ...

文章 2017-06-20 来自：开发者社区

关于JS中的constructor与prototype的总结

定义和用法 prototype 属性使您有能力向对象添加属性和方法 constructor 属性返回对创建此对象的数组函数的引用语法 object.prototype.name=value object.constructor 在JS中有一个function的东西。一般人们叫它函数 function Person(name){ console.log(name); } P...

文章 2017-06-19 来自：开发者社区

深入分析js中的this、constructor 和prototype

this this表示当前对象，如果在全局作用范围内使用this，则指代当前页面对象window；如果在函数中使用this，则this指代运行时此函数在什么对象上被调用。我们还可以使用apply和call两个全局方法来改变函数中this的具体指向先看一个在全局作用范围内使用this的例子： console.log(this === window); // true console.log(....

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更新时间 2024-01-27 14:50:44

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