如何在 JS 中“深冻结”对象？

1.如果咱们想要确保对象被深冻结，就必须创建一个递归函数来冻结对象类型的每个属性：

2.没有深冻结

let person = {

name: “Leonardo”,

profession: {

name: “developer”

} }; Object.freeze(person); person.profession.name = “doctor”; console.log(person); //output { name: ‘Leonardo’, profession: { name:

‘doctor’ } }

3.深冻结

function deepFreeze(object) {

let propNames = Object.getOwnPropertyNames(object);

for (let name of propNames) {

let value = object[name];

object[name] = value && typeof value === “object” ? deepFreeze(value) : value;

}

return Object.freeze(object); } let person = {

name: “Leonardo”,

profession: {

name: “developer”

} }; deepFreeze(person); person.profession.name = “doctor”; // TypeError: Cannot assign to read only property

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