wanglicc的博客

es5中怎么声明一个类，es6 中又是怎么声明类的

wanglicc — Mon, 17 Feb 2020 17:03:14 +0800

es5 let Animal = function(type){ this.type = type } Animal.prototype.eat=function(){ console.log('like eat food') } var dog = new Animal("dog"); var mok = new Animal("mok"); console.log(dog); ...

ES5中怎么查找一个元素，es6怎么查找元素

wanglicc — Mon, 17 Feb 2020 13:40:57 +0800

filter let arr = [1,2,3,4,5]; let find = arr.filter(function(item){ return item%2 === 0 }) console.log(find) Array.find let find =arr.find(function(item){ return item%2 === 0 //如果没有，返回unde...

es6创建新数组的几种方式

wanglicc — Mon, 17 Feb 2020 13:16:31 +0800

1 Array(数量) let array = Array(5); console.log(array) Array.of(value) var array = Array.of(1,2,3,5,5); console.log(array) Array(数量).fill(value) var array = Array(5).fill(7); console.log(array) let ...

将伪数组转换为数组的几种方法

wanglicc — Mon, 17 Feb 2020 12:57:35 +0800

[].slice.call() let arr = [].slice.call(arguments); let img = [].slice.call(document.querySelector('img')) Array.from() let arr = Array.from(arguments); let img = Array.from(document.querySelec...

几种循环的优缺点

wanglicc — Mon, 17 Feb 2020 12:12:44 +0800

for var arr = [1,2,3,4,5]; // 第一种 for(var i=0;i

vue.component

wanglicc — Sat, 15 Feb 2020 14:34:44 +0800

js Vue.component('Text1',{ template:"

", props:{ msg:{ type:String, default:"hello world" } } }) 注意事...

vue 注册或获取全局指令directive

wanglicc — Sat, 15 Feb 2020 14:14:33 +0800

注册方法 Vue.directive(‘my-directive’, { bind: function () {}, inserted: function () {}, update: function () {}, componentUpdated: function () {}, unbind: function () {} })