使用map将字数组里的对象重新组装

变为数组  ["扬子","北京","上海海吉雅"]

// 注意点 map循环的时候 不能够有空的 否则回出问题哦.

var list= [{
"goodsNum": 583816,
"order_num": 0,
"sales": "扬子",
"volume": 0,
"weight": 0
}, null ];
这样会报错

list=[{
		"goodsNum": 583816,
		"order_num": 0,
		"sales": "扬子",
		"volume": 0,
		"weight": 0
	}, {
		"goodsNum": 26484,
		"order_num": 0,
		"sales": "北京",
		"volume": 0,
		"weight": 0
	}, {
		"goodsNum": 24403,
		"order_num": 0,
		"sales": "上海",
		"volume": 0,
		"weight": 0
	}],

	 let newarr=list.map(obj=>{
			  return obj.sales
	 })
	console.log(newarr) // ["扬子","北京","上海"]