Menu
How can I limit the length of a string matching a RegEx
I assumed that var sixCharsRegEx = /^.{6,7}/ would only match strings of lengths 6 or 7
but no: http://jsfiddle.net/FEXbB/
What am I missing?
983
The following regular expression ensures that text is between 1 and 10 characters long, and additionally limits the text to the uppercase letters A–Z. You can modify the regular expression to allow any minimum or maximum text length, or allow characters other than A–Z.
The following regular expression ensures that text is between 1 and 10 characters long, and additionally limits the text to the uppercase letters A–Z. You can modify the regular expression to allow any minimum or maximum text length, or allow characters other than A–Z.
For example, JavaScript strings have a length property that holds an integer indicating the string’s length. However, using regular expressions to check text length can be useful in some situations, particularly when length is only one of multiple rules that determine whether the subject text fits the desired pattern.
Standard JavaScript without XRegExp doesn’t have a “dot matches line breaks” option, so the second regex uses a character class that matches any character. See Any character including line breaks for more information. The following regex matches any string that contains between 10 and 100 nonwhitespace characters:
You are missing closing dollar at the end. Correct one is: /^.{6,7}$/
104
Match the start and the end.
var sixCharsRegEx = /^.{6,7}$/; Your improved example
31
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
