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正确
let myVar: unknown = "Hello world!";
console.log(@(15).length);
let myVar: unknown = "Hello world!";
console.log((<string>myVar).length);
不正确
点击 此处 重试 正确
下一题 ❯let myVar: unknown = "Hello world!"; console.log(w3exercise_input_no_0.length); |