strict equality

In js, "= = =" is called the strict operator, "= =" is called the equality operator.The difference is that the equality operator ( == ) compares two values for equality, and the strict equality operator ( === ) compares whether they are "the same

Javascript has two ways of determining whether two values are equal. Equality symbol The equality symbol consists of two equals: = =Javascript is a weakly typed language. This means that the equality symbol will cast the type in order to compare

1. Data type: string,number,boolean,object,null,undefined2, abstract equality: x==yA, both data types are the same: typeof x = = typeof yA, string:x is exactly the same as the character of the Y position, returns True, otherwise false.b, the value

Understanding the strict mode in javascript and the javascript Mode I. What is a strict model?The JavaScript code we usually write is generally run in the normal mode. In addition to the normal running mode, ECMAscript 5 adds the second running mode:

This article describes in detail the equality symbols and strict equality symbols in javascript. You can refer to the following two methods in Javascript to determine whether the two values are equal. Equal sign An equal sign consists of two equal

Four Methods for Equality judgment in Ruby and four methods for ruby equality judgment It has long been known that ruby has four equality judgment methods: "=", "=", and "equal ?" And "eql ?", It is used in common programs, but I feel that I lack a

The object equality comparison mechanism is different for variables of reference types and value types, and the following describes equality comparisons for reference types and value types, respectively.Let's start with a partial definition of

Most JavaScript programmers know that strict equality () should be used to replace "normal" equal operations (). however, sometimes you really need an operator that is stricter than strict equality. For example, when you want to check whether a

I have never been concerned about this issue before and was asked by someone else. (from csdn) After discussing operators and briefly introducing equal operators, we should consider what they mean when processing classes and structure instances are

First, understand the data types in JS:JS data types can be divided into 2 categories, that is, the basic data types and reference types.The underlying data types are divided into: Undefined, null, String type, Number type, Boolean type.Reference