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HTML DOM NodeList
tryjsref_dom_nodelist_length
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<!DOCTYPE html> <html> <body> <h1>HTML DOM NodeList</h1> <p>Hellow World!</p> <p>Hellow Norway!</p> <p id="demo"></p> <script> const myNodelist = document.querySelectorAll("p"); document.getElementById("demo").innerHTML = "This document contains " + myNodelist.length + " paragraphs."; </script> </body> </html>