Map object was introduced in ES6 and is a collection of elements that are key and value pair. A key or value in a map can be an object or a primitive value.
Following is the code for map object in JavaScript −
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;
}
.result {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
</style>
</head>
<body>
<h1>Map object in JavaScript</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to create and display a map object</h3>
<script>
let resultEle = document.querySelector(".result");
let map1 = new Map([
["name", "Rohan Sharma"],
["age", 14],
["class", 9],
]);
document.querySelector(".Btn").addEventListener("click", () => {
for (let [key, value] of map1) {
resultEle.innerHTML += key + " = " + value + "<br>";
}
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
