我正在尝试使用动态名称访问对象的属性。这可能吗?
const something = { bar: "Foobar!" }; const foo = 'bar'; something.foo; // The idea is to access something.bar, getting "Foobar!"
有两种方法可以访问对象的属性:
something.bar
something['bar']
括号之间的值可以是任何表达式。因此,如果属性名称存储在变量中,则必须使用括号表示法:
var something = { bar: 'foo' }; var foo = 'bar'; // both x = something[foo] and something[foo] = x work as expected console.log(something[foo]); console.log(something.bar)