js map

 

productSkuMap

_this.scanCdItems = new Map()

_this.scanCdItems.delete(item);

tmpCdItems.set(item[0],item[1]);

if (tmpCdItems.has(item)) {

for(var item of _this.scanCdItems)

scanCdItems.size

for(var key in _this.scanCdItems)

tmpCdItems.get(key)

tmpCdItems.get(noExistsKey) == undefined