VUE 取数组交集

//produceTypeList-produceType：存在produceTypeList中不存在produceType中
            let diff1 = produceTypeList.filter(function(v){ return produceType.indexOf(v) === -1 }).join(",")

//produceType-produceTypeList：存在produceType中不存在produceTypeList中
            let diff2 = produceType.filter(function(v){ return produceTypeList.indexOf(v) === -1 }).join(",")