題目描述
var arr = [1,2]; var allArr = [{id:1,name:"s"},{id:2,name:"ds"},{id:3,name:"gg"}] var finalArr = []; // 最終結果 finalArr = [{id:3,name:"gg"}];
解決方法數組
var arr = [1,2]; var allArr = [{id:1,name:"s"},{id:2,name:"ds"},{id:3,name:"gg"}] // 最終結果 // finalArr = [{id:3,name:"gg"}]; var finalArr = allArr.filter((item) => !arr.includes(item.id));
includes() 方法用來判斷一個數組是否包含一個指定的值,若是是返回 true,不然false。spa
[1, 2, 3].includes(2); // true [1, 2, 3].includes(4); // false [1, 2, 3].includes(3, 3); // false [1, 2, 3].includes(3, -1); // true [1, 2, NaN].includes(NaN); // true