javascript - Lodash toString() 和 JavaScript 的原生 toString() 方法有什么区别？

Question

更具体地说，我指的是 this method来自 Lodash 和 this JavaScript 方法。

您什么时候会选择使用其中一种而不是另一种？

Answer 1

在我下面的有限测试中，Lodash 通过返回空字符串来处理 null 和 undefined。它还与 ECMAScript 标准相矛盾，因为 -0 返回 -0，而 native 方法返回 0。 (参见:6.1.6.1.20)

您可以在此处查看 lodash 的源代码以了解实现细节:https://github.com/lodash/lodash/blob/master/toString.js

native toString 行为由 tc39 的 ECMAScript 2021 Language Specification 7.1.17 定义

这些测试并不详尽，因此请随意添加您自己的测试。

console.log("native: " + [1,2,3].toString());
console.log("lodash: " + _.toString([1,2,3]));
console.log("native: " + [[1,2,3],[1,2,3],[1,2,3]].toString());
console.log("lodash: " + _.toString([[1,2,3],[1,2,3],[1,2,3]]));
console.log("native: " + (-0).toString());
console.log("lodash: " + _.toString(-0));
console.log("native: " + (-0.0).toString());
console.log("lodash: " + _.toString(-0.0));
console.log("native: " + (Infinity).toString());
console.log("lodash: " + _.toString(Infinity));
console.log("native: " + (-Infinity).toString());
console.log("lodash: " + _.toString(-Infinity));
console.log("native: " + (NaN).toString());
console.log("lodash: " + _.toString(NaN));
console.log("native: " + ({foo:'bar'}).toString());
console.log("lodash: " + _.toString({foo: 'bar'}));
console.log("native: " + [{foo:'bar'},{foo:'bar'},{foo:'bar'}].toString());
console.log("lodash: " + _.toString([{foo:'bar'},{foo:'bar'},{foo:'bar'}]));
console.log("native: " + Object.prototype.toString.call(null));
console.log("lodash: " + _.toString(null));
console.log("native: " + Object.prototype.toString.call(undefined));
console.log("lodash: " + _.toString(undefined));
console.log("native: " + document.toString());
console.log("lodash: " + _.toString(document));
console.log("native: " + (new Set()).toString());
console.log("lodash: " + _.toString(new Set()));
console.log("native: " + Symbol('foo').toString());
console.log("lodash: " + _.toString(Symbol('foo')));
console.log("native: " + 'foo'.toString());
console.log("lodash: " + _.toString('foo'));
console.log("native: " + (true).toString());
console.log("lodash: " + _.toString(true));
console.log("native: " + (BigInt(100000000000000000000)).toString());
console.log("lodash: " + _.toString(BigInt(100000000000000000000)));
console.log("native: " + (new Date()).toString());
console.log("lodash: " + _.toString(new Date()));

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