js 深拷贝的新方法

Chrome 98开始支持

全局的 structuredClone() 方法使用结构化克隆算法将给定的值进行深拷贝。

 

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// Create an object with a value and a circular reference to itself. const original = { name: "MDN" }; original.itself = original;   // Clone it const clone = structuredClone(original);   console.assert(clone !== original); // the objects are not the same (not same identity) console.assert(clone.name === "MDN"); // they do have the same values console.assert(clone.itself === clone); // and the circular reference is preserved