name="Arrow function" letme={ name:"Regular function", thisInArrow:()=>{ console.log("Example of "+this.name);//无 'this' 绑定 }, thisInRegular(){ console.log("Example of "+this.name);//'this' 绑定 } }; me.thisInArrow(); me.thisInRegular(); 输出 Example of Arrow function ...
The JavaScript context object in which the current code is executing. this就是代码执行时当前的context object。 Global context In the global execution context (outside of any function), this refers to the global object whether in strict mode or not. 代码没有在任何函数中执行,而是在全局作用域中...
function Person( name){ this.name = name; this.x=function(){ return this; } } let p = new Person("mcgrady"); console.log(p===p.x()) //true 1. 2. 3. 4. 5. 6. 7. 8. 9. AI检测代码解析 //严格模式下,函数中的this是undefined "use strict" function f(){ console.log(this...
var_md = require('./md5.js'); var_md2 = _interopRequireDefault(_md); function_interopRequireDefault(obj) {returnobj && obj.__esModule ? obj : {default: obj }; } function_asyncToGenerator(fn) {returnfunction() {vargen = fn.apply(this, arguments);returnnewPromise(function(resolve, rej...
箭头函数 this arrow function 无this,https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functionsD:\GPUGO\MP\wepy\mpBMCwepy\src\utils\wxRequest.jswepybui
英文| https://blog.bitsrc.io/where-exactly-does-this-point-to-in-javascript-2be1e3fad1fd 函数中的 this 在调用时是绑定的,完全取决于函数的调用位置(即函数的调用方式)。要知道 this 指向什么,你必须知道相关函数是如何被调用的。 1、Global...
「In most cases, the value of this is determined by how a function is called.」「在大多数的情况下，this 其值取决于函数的调用方式。」好，如果上面两行就看得懂的话那么就不用再往下看了，Congratulations！… 我想应该不会，至少我光看这两行还是不懂。先来看个例子吧：var getGender = function()...
原文: An ArrowFunction does not define local bindings for arguments, super, this, or new.target. Any reference to arguments, super, this, or new.target within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an...
https://www.w3schools.com/js/js_this.asp 箭头函数-特殊的this ES2015 introduced arrow functions which don't provide their ownthisbinding (it retains thethisvalue of the enclosing lexical context). 箭头函数和普通函数匿名函数的this指向有所区别,其也没有自己的arguments object ...
In other words, arrow functions treat this like any other lexical variable. 翻译:换句话说,箭头函数对待this就像对待任何其他词法变量一样 If you use a this inside an arrow function, it behaves exactly as any other variable reference, which is that the scope chain is consulted to find a function...