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{ console.log("abc".padStart(10)) console.log("abc".padStart(10, "foo")) console.log("abc".padStart(6, "123465")) console.log("abc".padStart(8, "0")) 阅读全文
posted @ 2021-02-27 15:56
abcdefgab
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{ //对象属性遍历 let obj1 = { a: 1 } let obj2 = { b1: 2 } Object.defineProperty(obj2, "b2", { enumerable: false, value: 3 }) Object.setPrototypeOf(obj2, obj 阅读全文
posted @ 2021-02-27 15:49
abcdefgab
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{ let task1 = () => new Promise((resolve, reject) => { console.log("task1 begin") setTimeout(() => resolve("task1 end.返回结果"), 1000) }) let task2 = () 阅读全文
posted @ 2021-02-27 15:44
abcdefgab
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{ // //异常处理。失败回调函数处理 // let task1 = () => Promise.reject("task1 error") // async function fun() { // return await task1() // } // fun().then( // res = 阅读全文
posted @ 2021-02-27 15:39
abcdefgab
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{ // let task1 = function () { // return new Promise(function (resovle, reject) { // setTimeout(function () { // resovle("task1的返回结果") // }, 1000) // 阅读全文
posted @ 2021-02-27 11:41
abcdefgab
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include: let arr1 = [1, 2, 3] console.log(arr1.includes(2)) console.log(arr1.includes(4)) console.log(arr1.includes(2,1)) console.log(arr1.includes(2, 阅读全文
posted @ 2021-02-27 11:22
abcdefgab
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index.html: <script src="../dist/bundle.js"></script> app.js: //引入模块 //使用解构的方式来获取模块中的暴露出内容 import { foo, bar } from "./modules/module1" import { MODUL 阅读全文
posted @ 2021-02-27 11:03
abcdefgab
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index.html: <script src="./script/libs/sea.js"></script> <script> seajs.use("./script/main") </script> main.js: define(function(require){ //模块引入 //let 阅读全文
posted @ 2021-02-27 10:42
abcdefgab
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index.html: <script src="./script/lib/require.js" data-main="./script/main.js"></script> main.js: (function () { require.config({ //模块名=>模块路劲映射 paths: 阅读全文
posted @ 2021-02-27 10:23
abcdefgab
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//定义和暴露模块 module.exports = { foo() { console.log("module1 foo() is called") } } //定义和暴露模块 module.exports = function () { console.log("module2 function 阅读全文
posted @ 2021-02-27 09:19
abcdefgab
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