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To remove all characters except numbers in javascript, call the replace() method, passing it a regular expression that matches all non-number characters and replace them with an empty string. The replace method returns a new string with some or all of the matches replaced.
A regular expression for a decimal number needs to checks for one or more numeric characters (0-9) at the start of the string, followed by an optional period, and then followed by zero or more numeric characters (0-9). This should all be followed by an optional plus or minus sign.
The REGEXREPLACE( ) function uses a regular expression to find matching patterns in data, and replaces any matching values with a new string. standardizes spacing in character data by replacing one or more spaces between text characters with a single space.
Use this:
document.getElementById(target).value = newVal.replace(/[^0-9.]/g, '');
Removing only decimal part can be done as follows:
number.replace(/(\.\d+)+/,'');
This would convert 13.6667px into 13px (leaving units px untouched).
Try this:
document.getElementById(target).value = newVal.replace(/^\d+(\.\d{0,2})?$/, "");
Check the link Regular Expression Demo
use the below reg exp
[a-z] + [^0-9\s.]+|\.(?!\d)
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