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6. JavaScript: Introduction to Scripting > 6.7. Decision Making: Equality and R...

6.7. Decision Making: Equality and Relational Operators

This section introduces a version of JavaScript’s if statement that allows a script to make a decision based on the truth or falsity of a condition. If the condition is met (i.e., the condition is true), the statement in the body of the if statement is executed. If the condition is not met (i.e., the condition is false), the statement in the body of the if statement is not executed. We’ll see an example shortly.

Conditions in if statements can be formed by using the equality operators and relational operators summarized in Fig. 6.13. The relational operators all have the same level of precedence and associate from left to right. The equality operators both have the same level of precedence, which is lower than the precedence of the relational operators. The equality operators also associate from left to right. Each comparison results in a value of true or false.


  

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