JavaScript: Find the longest string from a given array of strings
JavaScript Basic: Exercise-83 with Solution
Write a JavaScript to find the longest string from a given array of strings.
Pictorial Presentation:

Sample Solution:
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JavaScript to find the longest string from a given array of strings</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function longest_string(str_ara) {
var max = str_ara[0].length;
str_ara.map(v => max = Math.max(max, v.length));
result = str_ara.filter(v => v.length == max);
return result;
}
console.log(longest_string(['a', 'aa', 'aaa',
'aaaaa','aaaa']))
Sample Output:
["aaaaa"]
Flowchart:

ES6 Version:
function longest_string(str_ara) {
let max = str_ara[0].length;
str_ara.map(v => max = Math.max(max, v.length));
result = str_ara.filter(v => v.length == max);
return result;
}
console.log(longest_string(['a', 'aa', 'aaa',
'aaaaa','aaaa']))
Live Demo:
See the Pen javascript-basic-exercise-83 by w3resource (@w3resource) on CodePen.
Contribute your code and comments through Disqus.
Previous: Write a JavaScript to add two positive integers without carry.
Next: Write a JavaScript to replace each character of a given string by the next one in the English alphabet.
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JavaScript: Tips of the Day
Returns the sum of the powers of all the numbers from start to end (both inclusive)
Example:
const sumPower = (end, power = 2, start = 1) => Array(end + 1 - start) .fill(0) .map((x, i) => (i + start) ** power) .reduce((a, b) => a + b, 0); console.log(sumPower(10)); // 385 console.log(sumPower(10, 3)); // 3025 console.log(sumPower(10, 3, 5)); // 2925
Output:
385 3025 2925
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