Sometimes, we want to use a regular expression for finding decimal or float numbers with JavaScript.
In this article, we’ll look at how to use a regular expression for finding decimal or float numbers with JavaScript.
How to use a regular expression for finding decimal or float numbers with JavaScript?
To use a regular expression for finding decimal or float numbers with JavaScript, we use a regex that matches digits, signs and decimal points.
For instance, we write
/^[+-]?\d+(\.\d+)?$
to write a regex that matches the plus or minus sign at the beginning of the string with [+-].
We match digits that comes after it with \d+.
And we match the fractional part with (\.\d+)?.
Conclusion
To use a regular expression for finding decimal or float numbers with JavaScript, we use a regex that matches digits, signs and decimal points.
