Validate a number : Validation « Form Control « JavaScript DHTML

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JavaScript DHTML » Form Control » Validation   Validate a number function processNumber(inputField) {     try {         var inpVal = parseInt(inputField.value, 10);         if (isNaN(inpVal)) {             var msg = "Please enter a number only.";             var err = new Error(msg);             if (!err.message) {                 err.message = msg;             }             throw err;         }     } catch (e) {         alert(e.message);         inputField.focus();         inputField.select();     } }                     Related examples in the same category 1.  Form validation: Not Empty, Valid Radio, is Number, string length, EMail Address 2.  Validate an input field with minimum and maximum values 3.  Validate an field with a maximum number of characters 4.  Phone Number Validation 5.  Creating Reusable Validation Code 6.  Credit Card Validation 7.  Money Format 8.  Validating User Input 9.  Validate email address 10.  TextField input length validator 11.  Password field validator 12.  TextField validator: email, IP address and URL 13.  Must be at least 3 characters and not more than 8 14.  Only characters are allowed 15.  Can be empty 16.  Must be a valid email address 17.  ComboBox(list box): Must be selected one 18.  InputBox: value must be between 10 and 90 19.  Not stop when the first failed validation is encountered 20.  A CSS is used to highlight the fields which failed to validate 21.  Need to select a file 22.  A simple form with two passwords that must have the same value 23.  Shows the usage of callback functions for checking a field 24.  Javascript validation framework 25.  Form validator library