qq_42911663的博客

1.将数组中数字的每一项相加求和let sum = 0;let arr = [1,5,89,5]arr.forEach(item =>{ sum = sum + item})console.log(sum)//1002.要求将数组中的0项去掉，将不为0的值存入一个新的数组，生成新的数组let arr = [4, 0, 7, 9, 0, 0, 2, 6, 0, 3, ...

1.考点:闭包var name = "window"var obj = { name: "obj", func:function(){ return function(){ return console.log(this.name) } } }obj.func()() // windowvar name = "wi...