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JavaScript symbol.@@toPrimitive() function
The symbol.@@toPrimitive() function converts a symbol object to a primitive value.
Syntax
Symbol()[Symbol.toPrimitive](hint)
The hint value specifies the type eg − number, string, etc and is an optional argument.
Following is the code for symbol.@@toPrimitive() function −
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;
}
div {
font-size: 20px;
font-weight: 500;
}
</style>
</head>
<body>
<h1>JavaScript symbol.@@toPrimitive() function</h1>
<div class="sample"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to add the object with a number.
</h3>
<script>
let fillEle = document.querySelector(".sample");
let obj = {
num: 22,
[Symbol.toPrimitive]() {
return this.num;
},
};
document.querySelector(".Btn").addEventListener("click", () => {
fillEle.innerHTML = obj + 44;
});
</script>
</body>
</html>Output
On clicking the “CLICK HERE” button −
Updated on: 07-May-2020
64 Views
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