https://coderrob.com/tags/hoisting/Recent content in Hoisting on CoderrobHugoen-USSun, 26 Apr 2026 10:00:00 -0500https://coderrob.com/posts/javascript-hoisting-explained/Sun, 26 Apr 2026 10:00:00 -0500https://coderrob.com/posts/javascript-hoisting-explained/<p>Hoisting is JavaScript&rsquo;s setup behavior for declarations.</p> <p>It affects whether a function or variable can be used before the line where it appears in the file. That matters because <code>function</code>, <code>var</code>, <code>let</code>, and <code>const</code> do not all behave the same way.</p> <p>This post is about two questions:</p> <ol> <li><strong>When does JavaScript create the name?</strong></li> <li><strong>What value, if any, is available before the declaration line runs?</strong></li> </ol> <p>Hoisting is usually explained as &ldquo;JavaScript moves declarations to the top.&rdquo;</p>