4種JavaScript中不同迭代對象的方法
英文 | https://javascript.plainenglish.io/javascript-basics-4-different-ways-to-iterate-over-an-object-a5d16335cefconst obj1 = {test1: 'atit',test2: 53,test3: false,};console.log(Object.values(obj1));// expected output: Array ["atit", 53, false]
const obj1 = {test1: 'atit',test2: 53,test3: false,};console.log(Object.keys(obj1));// expected output: Array ["test1", "test2", "test3"]
const obj1 = {test1: 'atit',test2: 53,test3: false,};for (let [key, value] of Object.entries(obj1)) {console.log(key, value);}//test1 atit//test2 53//test3 false
for (let key in obj1) {if (obj1.hasOwnProperty(key)) {console.log(key, obj1[key]);}}//test1 atit//test2 53//test3 false
const test = new Map([['atit', '51'],['patel', 52]]);const obj1 = Object.fromEntries(test);console.log(obj1);// expected output: Object { atit: 51, patel: 52 }
學習更多技能
請點擊下方公眾號 
評論
圖片
表情