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JavaScript Symbol.keyFor() function
The JavaScript Symbol.iskeyFor() is used for finding the key that is associated with a given symbol. The key is retrieved from the global symbol registry.
Following is the code for Symbol.keyFor() 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.keyFor() function</h1>
<div class="sample"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to find the keys for the symbol
</h3>
<script>
let fillEle = document.querySelector(".sample");
const symbol = Symbol.for("HELLO");
const symbol1 = Symbol.for("NEW");
const symbol2 = Symbol.for(711);
document.querySelector(".Btn").addEventListener("click", () => {
fillEle.innerHTML += "symbol = " + Symbol.keyFor(symbol) + "<br>";
fillEle.innerHTML += "symbol1 = " + Symbol.keyFor(symbol1) + "<br>";
fillEle.innerHTML += "symbol2 = " + Symbol.keyFor(symbol2) + "<br>";
});
</script>
</body>
</html>Output
On clicking the “CLICK HERE” button −
Updated on: 08-May-2020
30 Views
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