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

?

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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"]