What would be the regex to allow digits and a dot? Regarding this \D only allows digits, but it doesn't allow a dot, I need it to allow digits and one dot this is refer as a float value I need to be valid when doing a keyup function in jQuery, but all I need is the regex that only allows what I need it to allow.
This will be in the native of JavaScript replace function to remove non-digits and other symbols (except a dot).
Cheers.
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regex
Try the following expression
/^\d{0,2}(\.\d{1,2})?$/.test()
Try this
boxValue = boxValue.replace(/[^0-9\.]/g,"");
This Regular Expression will allow only digits and dots in the value of text box.
My try is combined solution.
string = string.replace(',', '.').replace(/[^\d\.]/g, "").replace(/\./, "x").replace(/\./g, "").replace(/x/, ".");
string = Math.round( parseFloat(string) * 100) / 100;
First line solution from here: regex replacing multiple periods in floating number . It replaces comma "," with dot "." ; Replaces first comma with x; Removes all dots and replaces x back to dot.
Second line cleans numbers after dot.
\d*\.\d*
Explanation:
\d* - any number of digits
\. - a dot
\d* - more digits.
This will match 123.456, .123, 123., but not 123
If you want the dot to be optional, in most languages (don't know about jquery) you can use
\d*\.?\d*
Source: Stackoverflow.com