This is one of the most awaited features in JavaScript. Here's an example:ExampleTry this code » function sayHello(name='World') { return `Hello ${name}!`; } console.log(sayHello()); // Hello World! console.log(sayHello('John')); // Hello John!
This chapter describes the most important features of ES6. New Features in ES6 Browser Support for ES6 (2015) ES6 is fully supported in all modern browsers since June 2017: Chrome 51Edge 15Firefox 54Safari 10Opera 38 May 2016Apr 2017Jun 2017Sep 2016Jun 2016 ...
Symbol还可以用来创建私有属性,外部无法直接访问由symbol做为键的属性值。 以下例子来自es6features (function() {//创建symbolvarkey = Symbol("key");functionMyClass(privateData) {this[key] =privateData; } MyClass.prototype={ doStuff:function() { ...this[key] ... } }; })();varc =newMyClass...
JavaScript ES6 brings new syntax and new awesome features to make your code more modern and more readable. It allows you to write less code and do more. ES6 introduces us to many great features like arrow functions, template strings, class destruction, Modules… and more. Let’s take a loo...
ES6 Features系列:Template Strings & Tagged Template Strings,1.Brief ES6(ECMAScript6thedition)于2015年7月份发布,虽然各大浏览器仍未全面支持ES6,但我们可以在后端通过Node.js0.12和io.js,而前端则通过Traceur或Babel这类Transpiler将ES6语法预转译
1. Brief ES6(ECMAScript 6th edition)于2015年7月份发布,虽然各大浏览器仍未全面支持ES6,但我们可以在后端通过Node.js 0.12和io.js,而前端则通过Traceur或Babel这类Transpiler将ES6语法预转译为ES5语法,来提前兴奋一把。而
ReactJs koa 兼容性对比表格 Well-known Features 本节介绍一些广为人知的 ES6 “明星”特性,也就是讨论 ES6 时经常提及的一些新特性。当然 ES6 并不仅限于这些,还包括很多其他有用的特性,会在本系列的其他文章中介绍。 let and const let 命令 原来的 javascript 中没有块级作用域,只有函数级作用域。ES6 中...
We’ll go through the eight features in the follow sections. For now, I’ll go through the first five features. I’ll add the rest as I go along in the next couple of weeks. By the way, browser support for ES6 is amazing.Almost everything is supported nativelyif you code for the ...
Disclaimer: the list if highly biased and subjective. It is in no way was intended to diminish usefulness of other ES6 features, which didn’t make it to the list simply because I had to limit the number to 10. First, a bit of history because those who don’t know the history can’...
一、条件渲染 1.1、v-if 在字符串模板中,如 Handlebars ,我们得像这样写一个条件块: <!-- Handlebars 模板 --> {{#if ok}} Yes {{/if}} 在 Vue.js ,我们使用 v-if 指令实现同样的功能: Yes 也可以用 v-else 添加一个 “else” 块: Yes No 1.1.1、template v-if 因为 v 张果 2018/03/30...