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📜  对象获取默认值 javascript 代码示例

📅  最后修改于: 2022-03-11 15:03:43.689000             🧑  作者: Mango

代码示例1
let foo = obj.maybeUndefined ?? "default value";
// why not 'or' ?
let obj = { maybeUndefined: 0 };
let foo = obj.maybeUndefined || 1; // foo == 1