The value, clicking 'down' with the input blank will result in a very large number. The examples posted in these responses are vastly oversimplified when compared against reality.Here is how the two inputs are displayed in Safari: and in Opera: They are currently not supported in Firefox 4 Beta. For example it is perfectly valid for an email address to go to the MX handler for a top level domain.Below is a code in HTML, CSS and Java Script to validate a form . Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.The option of using pure HTML, sometimes with a touch of CSS, to complement Java Script form validation was until recently unthinkable.Chances are likely that the above validators will not be able to match the requirements of your server.
The simplest change you can make to your forms is to mark a text input field as 'required': This informs the (HTML5-aware) web browser that the field is to be considered mandatory.Using CSS you can place markers inside or alongside the input box, or simply use background colours and borders as some browsers do by default. On the i Phone/i Pad the different input types are associated with different keyboards, making it easier for people to complete your online forms.In other web browsers they can be used in combination with the .Different browsers may mark the input box in some way (Firefox 4 Beta adds a red box-shadow by default), display a warning (Opera) or even prevent the form from being submitted if this field has no value.Hopefully these behaviours will converge in future releases.If you want to restrict the input of a text field to numbers without having the up/down arrows associated with the input box, you can always just set the input type to of "\d " (one or more numbers). So something along the line of [email protected] would be perfectly valid! Anyone out there know how to adjust the url validation so that it will accept inputs in the following format: no need to force a user to input or https:// You can find a comparison of some interesting regexes for validating URLs here.