There are two way to create a reagular expression , the first is constructed with the RegExp constructor , the second is written as a literal value by enclosing a pattern in forward slash (/) ...

Meta-characters. There are special characters in regular expressions, some of them include: d matches any digit, equivalent to [0-9]; D matches any character that’s not a digit, equivalent to ...

We can use special selectors in Regular Expressions to select a particular type of value. One such selector is the digit selector \d which is used to retrieve one digit (e.g. numbers 0 to 9) in a ...

I'm trying to write a regular expression for a javascript function. I basically want to test the entire string to make sure the string only has alpha numberic characters and certain latin ...

Regex syntax. Here’s a simple example of a regular expression, which looks in a string for the sequence Hello world:. Hello world If you’re just matching plain old letters and numbers and ...

If anything is not entered or the input doesn't match the regular expression then warning message will be shown on the screen. The routine stops the form, from submitting by returning a false value ...

There are two types of people in the world: those who have no idea what a regular expression is, and those who not only know what they are but can compose them on the fly and tend to use them in si… ...