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How to find keys of a hash in JavaScript?
Following is the code for finding keys of a hash 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 {
font-size: 20px;
font-weight: 500;
}
</style>
</head>
<body>
<h1>Find keys of a hash in JavaScript</h1>
<div style="color: green;" class="result"></div>
<button class="Btn">DISPLAY</button>
<h3>Click on the above button to display the hash keys</h3>
<script>
let resEle = document.querySelector(".result");
let obj = {
firstName: "Rohan",
lastName: "Sharma",
age: 22,
};
document.querySelector(".Btn").addEventListener("click", () => {
resEle.innerHTML += "object keys are " + Object.keys(obj);
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘DISPLAY’ button −
Updated on 17-Jul-2020 09:09:10
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