# JavaScript: Find the longest string from a given array

## JavaScript Basic: Exercise-125 with Solution

Write a JavaScript program to find the longest string from a given array.

Pictorial Presentation:

Sample Solution:

HTML Code:

``````<!DOCTYPE html>
<html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title> Find the longest string from a given array</title>
<body>

</body>
</html>
```
```

JavaScript Code:

``````function longest_str_in_array(arra)
{
var max_str = arra[0].length;
var ans = arra[0];
for (var i = 1; i < arra.length; i++) {
var maxi = arra[i].length;
if (maxi > max_str) {
ans = arra[i];
max_str = maxi;
}
}
return ans;
}
console.log(longest_str_in_array(["ab", "a", "abcd"]));
console.log(longest_str_in_array(["ab", "ab", "ab"]));
``````

Sample Output:

```abcd
ab
```

Flowchart:

ES6 Version:

``````function longest_str_in_array(arra)
{
let max_str = arra[0].length;
let ans = arra[0];
for (let i = 1; i < arra.length; i++) {
const maxi = arra[i].length;
if (maxi > max_str) {
ans = arra[i];
max_str = maxi;
}
}
return ans;
}
console.log(longest_str_in_array(["ab", "a", "abcd"]));
console.log(longest_str_in_array(["ab", "ab", "ab"]));
``````

Live Demo:

See the Pen javascript-basic-exercise-125 by w3resource (@w3resource) on CodePen.

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## JavaScript: Tips of the Day

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters)

Example:

```const isAnagram = (str1, str2) => {
const normalize = str =>
str
.toLowerCase()
.replace(/[^a-z0-9]/gi, '')
.split('')
.sort()
.join('');
return normalize(str1) === normalize(str2);
};
console.log(isAnagram('iceman', 'cinema')); // true
```

Output:

```true
```