JavaScript中的对象和数组

对象遍历

let a = {};
a.bb = '99'
a.cc = '11'
a.dd = '44'

for(x in a){ //x是key
	console.log(x); //key
	console.log(a[x]); //value
}

数组遍历

let array_a = []

array_a.push()

for(let i = 0; i < 3; i++){
	let temp = {}
	temp.name = '小明'+i
	temp.age = i
	array_a.push(temp)
}

for(let x in array_a){ //x是下标
	console.log(x);
	console.log(array_a[x]);
	
	let ele = array_a[x];
	
	console.log(ele['name']); //两种读取js对象属性的方法
	console.log(ele.name);
}