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JavaScript - length of array objects
The length property in JavaScript returns the size of the object. Following is the code for the length of string and array objects −
Example
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample, .result { font-size: 18px; font-weight: 500; color: red; } </style> </head> <body> <h1>JavaScript length property</h1> <div class="sample"></div> <div style="font-weight: bold; color: black;" class="result"></div> <button class="Btn">CLICK HERE</button> <h3> Click on the above button to find the length of the array </h3> <script> let sampleEle = document.querySelector(".sample"); let resultEle = document.querySelector(".result"); let arr = [1, 2, "A", "B", "D"]; sampleEle.innerHTML = arr; document.querySelector(".Btn").addEventListener("click", () => { resultEle.innerHTML += "The array length is = " + arr.length; }); </script> </body> </html> Output
On clicking the ‘CLICK HERE’ button −
Updated on: 2020-05-11T13:06:39+05:30
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