WebUse .call () or .apply () when you want to invoke the function immediately, and modify the context. Call/apply call the function immediately, whereas bind returns a function that, when later executed, will have the correct … WebAug 17, 2014 · Function.prototype.call.apply(Function.prototype.bind, [function() {}]); Yes, it looks scary, but it works! It was used in Google Maps once upon a time and found while debugging JS in Opera by some of its devs (well, I can’t link to original article, because My Opera is gone forever…).

Function.prototype.call() - JavaScript MDN - Mozilla

WebFunction.prototype.apply () apply () 方法调用一个具有给定 this 值的函数，以及以一个数组（或一个 类数组对象 ）的形式提供的参数。 尝试一下 语法 apply(thisArg) … WebJavaScript: bind () vs apply () and call () The this refers to object can be different based on whether it is global, an object, and also on the usage of the three Function prototype methods — namely bind, call, and apply. … shop for home insurance online

如何理解Function.prototype.apply.call(fn,thisArg,args) - 知乎

WebFor example if you wish to use all Reflect methods, except for Function.prototype.apply then your config would look like prefer-reflect: [2, { "exceptions": ["apply"] }]. If you want to use Reflect methods, but keep using the delete keyword, then your config would look like prefer-reflect: [2, { "exceptions": ["delete"] }]. WebFeb 21, 2024 · Note that you can't save slice.call and call it as a plain function, because the call() method also reads its this value, which is the function it should call. In this … http://www.jianshu.com/p/c6d06fb74df0 shop for home equity loan