How to join two arrays in JavaScript?
Following is the code to join two arrays together in JavaScript −
Example
Live Demo
<!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;
}
.result,.sample {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
.result {
color: red;
}
</style>
</head>
<body>
<h1>Join two arrays in JavaScript</h1>
<div class="sample"></div>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click the above button to join the above two arrays together.</h3>
<script>
let BtnEle = document.querySelector(".Btn");
let resEle = document.querySelector(".result");
let sampleEle = document.querySelector(".sample");
let arr = [1, 2, 3, 4];
let arr1 = ["A", "B", "C", "D"];
sampleEle.innerHTML = "arr = " + arr + " " + "arr1 = " + arr1;
let mergedArr = arr.concat(arr1);
BtnEle.addEventListener("click", () => {
resEle.innerHTML = "Merged array = " + mergedArr;
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Published on 18-Jul-2020 12:31:33
