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How to create a unique ID for each object in JavaScript?
Following is the code to create a unique ID for each object −
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>Create a unique ID for each object</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button&g;
<h3>Click on the above button to check if id generated are unique or not</h3>
<script>
let resEle = document.querySelector(".result");
let BtnEle = document.querySelector(".Btn");
let obj = {
id: Symbol("UID"),
a: 22,
b: 44,
};
let obj1 = {
id: Symbol("UID"),
a: 12,
b: 41,
};
BtnEle.addEventListener("click", () => {
if (obj.id === obj1.id) {
resEle.innerHTML = "The id generated are not unique <br>";
}
else {
resEle.innerHTML = "The id generated is unique for each object";
}
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Updated on: 21-Jul-2020
886 Views
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