🔧 Searching for a Value in an Array Using JavaScript.
Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to
This program demonstrates how to search for a specific val within an array using a while loop in JavaScript. The user is prompted to enter a value, and the program then checks if this value exists in a predefined variety. If the value is found, a message indicating its availability is displayed; otherwise, a message indicating its absence is shown.
Simple Example:
let Val = prompt("Enter Value ..!");
let numbers = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300];
let i = 0;
let Find = false;
while (i < numbers.length) {
if (numbers[i] == Val) {
Find = true;
break;
}
i++;
}
if (Find) {
console.log("Available Variable..!");
} else {
console.log("No Available Variable..!");
}
Output:
100 This Variable Available in the Array..!
Finding an Element in an Array Using DOM in JavaScript:
In this program, we demonstrate how to search for a specific value within an array using a while loop in JavaScript. The user enters a value in an input field, and the program checks if this value exists in a predefined array. If the value is found, a message indicating its availability is displayed; otherwise, a message indicating its absence is shown.
Example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Find Element in Array Using DOM in JavaScript </title>
<style>
body {
font-family: Arial, sans-serif;
margin: 20px;
}
h4, h2 {
color: #333;
}
input {
padding: 10px;
margin-right: 10px;
border: 1px solid #ccc;
border-radius: 5px;
}
button {
padding: 10px 20px;
border: none;
border-radius: 5px;
background-color: #28a745;
color: white;
cursor: pointer;
}
button:hover {
background-color: #218838;
}
</style>
</head>
<body>
<h4>Find Element in Array</h4>
<h4 id="NumData"></h4>
<input type="text" placeholder="Enter Value" id="Num" />
<button onclick="SearchEle()">Find</button>
<h2 id="Ans"></h2>
<script>
let Data = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300];
document.getElementById("NumData").innerHTML += "Our Array is: " + Data.join(', ');
function SearchEle() {
let NewValue = document.getElementById("Num").value;
let i = 0;
let Find = false;
while (i < Data.length) {
if (Data[i] == NewValue) {
Find = true;
break;
}
i++;
}
if (Find) {
document.getElementById("Ans").innerHTML = `${NewValue}
is Available..!`;
} else {
document.getElementById("Ans").innerHTML = `${NewValue}
is not Available..!`;
}
}
</script>
</body>
</html>
Output:
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