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。

 

// 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