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object.is() in equality comparison JavaScript
The object.is() method introduced in ES6 as a way to compare two values. These two values can either be primitives or objects. It does a little better comparison than == and ===.
Following is the code for object.is() in equality comparison −
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: blueviolet;
}
</style>
</head>
<body>
<h1>Object.is() equality comparsion</h1>
<div class="result"></div>
<button class="Btn">Click here</button>
<h3>Click on the above button to compare objects using Object.is()</h3>
<script>
let resEle = document.querySelector(".result");
let BtnEle = document.querySelector(".Btn");
let obj = { a: 11, b: 22 };
let obj1 = { a: 11, b: 22 };
let obj2 = obj;
BtnEle.addEventListener("click", () => {
if (Object.is(obj, obj1)) {
resEle.innerHTML = "obj = obj1";
} else {
resEle.innerHTML = "obj != obj1 <br>";
}
if (Object.is(obj, obj2)) {
resEle.innerHTML += "obj = obj2";
}
});
</script>
</body>
</html>
Output
On clicking the ‘CLICK HERE’ button −
Updated on: 2020-07-17T07:25:56+05:30
122 Views
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