Sometimes, we want to detect string which contains only spaces with JavaScript.
In this article, we’ll look at how to detect string which contains only spaces with JavaScript.
How to detect string which contains only spaces with JavaScript?
To detect string which contains only spaces with JavaScript, we can use the string trim method.
For instance, we write
if (!str.trim()) {
//...
}
to check if the string returned by str.trim is an empty string.
If it is, then the str string has only whitespaces in it.
Conclusion
To detect string which contains only spaces with JavaScript, we can use the string trim method.
