JavaScript Operator Precedence — Simplifying Expression Evaluation

<p>O<em>perator precedence in JavaScript determines the order in which operators are evaluated in an expression. Understanding operator precedence is crucial for writing correct and predictable code. This article aims to provide a comprehensive guide to operator precedence in JavaScript, explaining how it affects the evaluation of expressions and providing real-world examples to illustrate its importance.</em></p> <p><img alt="" src="https://miro.medium.com/v2/resize:fit:630/0*sR_tSMa6zNvJDcFD" style="height:467px; width:700px" /></p> <p>Photo by&nbsp;<a href="https://unsplash.com/@pawel_czerwinski?utm_source=medium&amp;utm_medium=referral" rel="noopener ugc nofollow" target="_blank">Pawel Czerwinski</a>&nbsp;on&nbsp;<a href="https://unsplash.com/?utm_source=medium&amp;utm_medium=referral" rel="noopener ugc nofollow" target="_blank">Unsplash</a></p> <h2><strong>Operator Precedence Rules:</strong></h2> <p>JavaScript follows a set of predefined rules to determine the precedence of operators. Here are the key principles to keep in mind:</p> <h2>Parentheses Override Precedence:</h2> <p>Operators enclosed in parentheses are always evaluated first, regardless of their precedence. Parentheses allow you to explicitly control the order of evaluation in an expression.</p> <p><strong>Example</strong>:</p> <pre> const result = (2 + 3) * 4; console.log(result); // Output: 20</pre> <h2>Higher Precedence Operators Are Evaluated First:</h2> <p>Operators with higher precedence are evaluated before operators with lower precedence. JavaScript assigns a numerical value to each operator based on its precedence level.</p> <p><a href="https://medium.com/@stheodorejohn/javascript-operator-precedence-simplifying-expression-evaluation-e14e595b5219">Read More</a></p>