JavaScript: Replace all the numbers with a specified number of a given array of integers
JavaScript Basic: Exercise-95 with Solution
Write a JavaScript program to replace all the numbers with a specified number of a given array of integers.
Pictorial Presentation:
Sample Solution:
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Replace all the numbers with a specified number of a given array of integers</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function array_element_replace(arr, old_value, new_value) {
for (var i = 0; i < arr.length; i++) {
if (arr[i] === old_value) {
arr[i] = new_value;
}
}
return arr;
}
num = [1, 2, 3, 2, 2, 8, 1, 9];
console.log("Original Array: "+num);
console.log(array_element_replace(num, 2, 5));
Sample Output:
Original Array: 1,2,3,2,2,8,1,9 [1,5,3,5,5,8,1,9]
Flowchart:
ES6 Version:
function array_element_replace(arr, old_value, new_value) {
for (let i = 0; i < arr.length; i++) {
if (arr[i] === old_value) {
arr[i] = new_value;
}
}
return arr;
}
num = [1, 2, 3, 2, 2, 8, 1, 9];
console.log(`Original Array: ${num}`);
console.log(array_element_replace(num, 2, 5));
Live Demo:
See the Pen javascript-basic-exercise-95 by w3resource (@w3resource) on CodePen.
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Previous: Write a JavaScript program to find the number which appears most in a given array of integers.
Next: Write a JavaScript program to compute the sum of absolute differences of consecutive numbers of a given array of integers.
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JavaScript: Tips of the Day
How to insert an item into an array at a specific index (JavaScript)?
What you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:
var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());
Ref: https://bit.ly/2BXbp04
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