javascript - 不同类型的比较(<和>)规则是什么？

Question

对于 <运算符，当它应用于两个字符串、两个数字和两个 bool 值时，它似乎很容易理解。

我的问题分为两部分:

我们用它来比较两个对象的规则是什么？

好像不能写{} < {} , 但以下代码生成 false .

var a = {};
var b = {};
console.log(a < b); //false

我们用它来比较两个不同的类型时有什么规律？

true < "" //false
true > "" //true
10 < true //false
10 < "" //false

我不知道为什么结果是这样的。我找到了 an article on comparison in JavaScript但没有细节。

顺便说一句，我对如何 == 毫无疑问和 ===工作。

Answer 1

What is the rule when we use it to compare two objects?

来自 wikipedia :

When comparing variables which are objects they are considered to be different if their objects are not the same object, even if the values of them are the same, so:

var obj1 = {a: 1};
var obj2 = {a: 1};
var obj3 = obj1;
alert(obj1 == obj2);   //false
alert(obj3 == obj1);   //true

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What is the rule when we use it to compare two different type?

它在您发布的文章中有解释，我引用了这篇文章:

If the two operands are not of the same type, JavaScript converts the operands, then applies strict comparison. If either operand is a number or a boolean, the operands are converted to numbers if possible; else if either operand is a string, the string operand is converted to a number if possible. If both operands are objects, then JavaScript compares internal references which are equal when operands refer to the same object in memory.