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Function borrowing in JavaScript.
The call(), apply() and bind() are used to borrow methods in JavaScript.
Following is the code for borrowing methods 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,.sample {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
.result {
color: red;
}
</style>
</head>
<body>
<h1>Borrowing a method in JavaScript</h1>
<div class="sample"></div>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to borrow the welcome method of object obj</h3>
<script>
let sampleEle = document.querySelector(".sample");
let resultEle = document.querySelector(".result");
let obj = {
firstName: "Rohan",
lastName: "Sharma",
welcome() {
return "Welcome " + this.firstName + " " + this.lastName;
},
};
let obj1 = {
firstName: "John",
lastName: "Shaw",
};
sampleEle.innerHTML = "obj.welcome() = " + obj.welcome();
document.querySelector(".Btn").addEventListener("click", () => {
resultEle.innerHTML = "obj1.welcome() = " + obj.welcome.call(obj1);
});
</script>
</body>
</html>
Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Updated on: 2020-07-21T07:45:55+05:30
386 Views
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