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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

JavaScript: Shorten your "if" statements

Now this is a tricky one.
Shortening your0 "if" statements can be a great way to simplify your code.
However, if you need to write more complicated statements, you should definitely go for the first option.

// Instead of using this                                      
if (iAmHungry) {
   bakeAnEgg()
}
// You can use this
if (iAmHungry) bakeAnEgg()
// Or this
iAmHungry? bakeAnEgg() : 0

Remember, readability & ease-of-use are more important than a couple less lines of code.

Ref: https://bit.ly/2LBj213