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JavaScript: Check whether a string is blank or not

JavaScript String: Exercise-2 with Solution

Write a JavaScript function to check whether a string is blank or not.

Test Data :
console.log(is_Blank(''));
console.log(is_Blank('abc'));
true
false

Pictorial Presentation:

JavaScript: Check whether a string is blank or not

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JS string : is blank</title>
</head>
<body>
</body>
</html>

JavaScript Code:

is_Blank =  function(input) {
        if (input.length === 0)
        return true;
        else 
        return false;
      }
console.log(is_Blank(''));
console.log(is_Blank('abc'));

Sample Output:

true
false

Flowchart:

Flowchart: JavaScript- Check whether a string is blank or not

Live Demo:

See the Pen JavaScript Check whether a string is blank or not - string-ex-2 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript function to split a string and convert it into an array of words.

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JavaScript: Tips of the Day

Converts a given string into an array of words

Example:

const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
console.log(words('I love javaScript!!')); // ["I", "love", "javaScript"]
console.log(words('python, javaScript & coffee')); // ["python", "javaScript", "coffee"]

Output:

["I", "love", "javaScript"]
["python", "javaScript", "coffee"]