log(Object.values(object1)); // expected output: Array ["somestring", 42, false] 最后就是Object.entries(),是Object.values同时期的产物, 都是ECMAScript 2017 (ECMA-262)") const object1 = { a: 'somestring', b: 42 }; for (let [key, value] of Object.entries(object1)) { console....
Writing “of“, tells the JavaScript compiler how it needs to handle iterating over the specified object. Finally, the last element needed to be included in the brackets is the object you want to iterate over. As long as the object supports the iterable protocol, this will loop over it. ...
for of 是es6引新引入的特性,修复了es5引入的for in 的不足。 for of 不能循环普通的对象,需要通过Object.keys搭配使用。 对于他们的区别,一般就看下面一段代码就可: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 {constb=[1,2,3,4];// 创建一个数组b.name='小明';// 给数组添加一个属性Arra...
I have used for... of loop on string it works But when I applied it on window object it console an error that window object is not iterable. How both the objects are different ?? As we know string is also an object in js.
(3)对象(Object),可通过Object.entries()、Object.keys()和Object.values()方法, 转换为使用上边的数组(Array)的方式进行循环遍历。 3. 测试代码 functiondoObjForLoop1(obj){ letstartTime = performance.now(); for(letkeyinobj){ // console.log(key, obj[key]); ...
在利用for-in循环遍历对象Dogh时，输出：name,age,color，calculate。而在用for-of循环直接遍历对象Dogha时，并没有达到预想的结果，而是提示：forloop.html:57 Uncaught TypeError: Dogha is not iterable。所以，如果要用for-of来遍历对象属性时，还需借助Object.key()方法。所以，遍历对象，for-in更显得简单...
JavaScript supports different kinds of loops: for- loops through a block of code a number of times for/in- loops through the properties of an object for/of- loops through the values of an iterable object while- loops through a block of code while a specified condition is true ...
The for...of loop in JavaScript is used to traverse elements of the iterable object. In each iteration, it gives an element of the iterable object. Iterable objects include arrays, strings, maps, sets, and generators.The JavaScript for...of loop is a much more efficient way to iterate ...
JavaScript for...of loop The syntax of thefor...ofloop is: for(elementofiterable) {// body of for...of} Here, iterable- an iterable object (array, set, strings, etc). element- items in the iterable In plain English, you can read the above code as: for every element in the iter...
FOR…OF循环 for…of _loop_是一个相对较新的迭代语法,用于遍历可迭代对象(如数组、字符串等)的值。例如: let array = [1, 2, 3, 4, 5]; for (let value of array) { console.log(value); } 这段代码会打印数组中的每个元素值。 for循环是一种强大的工具,在JavaScript开发中无处不在。掌握它的...