Chapter 14.3.1. The Comparison Problem
JavaScript provides a typical set of comparison operators: ==, !=, <, >, <=, =>. Starting by looking at just equality, JavaScript has two different ways to test equality: the standard == and the less-standard ===. == will try to change the type of the objects being compared in an effort to see whether they match. For example, “1†== 1 is true in JavaScript. The === is stricter: It doesn’t do any kind of type conversion. So, “1†=== 1 is false.
JavaScript will also do type conversions for expressions such as “1†< 2. You might be thinking that JavaScript’s comparison operators seem straightforward to use. And you’d be correct if you’re only comparing some combination of numbers or strings. ...
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