javascript remove numbers from string
var numericString = testString.replace(/[^0-9]/g, ''); return numericString; }. This function uses the replace method and the /[^0-9]/g,'' Regular Expression to remove non-numeric characters from the testString variable passed in the parameter list.Save the document and launch your browser. Open the document in your browser.ips & Warnings. 1  This example runs the removeNonNumeric function when the Web page loads. 2  Remove the first three lines of code before that function to stop that from happening. 3  To use the function in production, call the function and pass it a string containing text.