[英]JS/jQuery: Filter object properties by array
让我们来看一个示例JS对象(又称“关联数组”):
var zoo = {
monkey: { legs: 4, color: "black" },
fish: { legs: 0, color: "yellow" },
turtle: { legs: 4, color: "green" },
emu: { legs: 2, color: "gray" },
};
现在,我想检索一个水生动物的嵌套对象(又名“子数组”)。 是否有标准的JS / jQuery构造或函数来按数组过滤对象属性(“按数组索引数组”),即类似:
var aquatic = zoo["fish", "turtle"];
结果显然应该是{ { legs: 0, color: "yellow" }, { legs: 4, color: "green" } }
。
还是for
循环是这里最简单的解决方案?
您可以使用map()
并返回对象数组。
var zoo = { monkey: { legs: 4, color: "black" }, fish: { legs: 0, color: "yellow" }, turtle: { legs: 4, color: "green" }, emu: { legs: 2, color: "gray" }, }; var aquatic = ["fish", "turtle"]; var result = aquatic.map(e => zoo[e]); console.log(result)
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