If both operands are objects, then the reference values are compared.If both operands are NaN, the equal operator returns false because, by rule, NaN is not equal to NaN.If either operand is NaN, the equal operator returns false and the not equal operator returns true.Values of null and undefined cannot be converted into any other values for equality checking.Values of null and undefined are equal.If one operand is an object and the other is a number, attempt to convert the object to a number before checking for equality.If one operand is an object and the other is a string, attempt to convert the object to a string (using the toString() method) before checking for equality.
Which explains that if both of conditions are FALSE or 0, the return is FALSE or 0. In fig.-1 of the picture, both of the taps are closed, so the water is not flowing down. If one operand is a string and the other is a number, attempt to convert the string into a number before checking for equality. JavaScript Logical AND operator (&) This above pictorial helps you to understand the concept of LOGICAL AND operation with an analogy of taps and water.A value of false converts to 0 whereas a value of true converts to 1. In order for JavaScript to compare two different data types (for example, numbers and strings ), it must. If an operand is a Boolean value, convert it into a numeric value before checking for equality. Otherwise, the function will return Not Equal.Example: This example illustrates why 0 is not equal to. First, 0 is converted into its boolean value, by automatic type conversion which is true. When performing conversions, follow these basic rules: Why 0 is not equal to false in if condition in JavaScript The reason behind this behavior is that JavaScript treats non-empty string as true. The not equal operator is the exclamation point followed by an equal sign (!=), and it returns true if operands are not equal.īoth operators do conversions in order to determine if two operands are equal. The equal operator in JavaScript is the double equal sign (=), and it returns true if both operands are equal. Equal and Not Equal : Relational Operators « Operators « JavaScript Tutorial
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