See QLine Edit::input Mask for further details, as the exact same mask strings are used by Text Field. This property holds whether the Text Field has partial text input from an input method.While it is composing an input method may rely on mouse or key events from the Text Field to edit or commit the partial text. Returns the total number of characters in the Text Field item.By default, the horizontal text alignment follows the natural alignment of the text, for example text that is read from left to right will be aligned to the left.The possible alignment values are: Sets an input mask on the Text Field, restricting the allowable text inputs.Also each browser has a slightly different default behaviour.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.
Forms frequently include required input that needs to be clearly identified using labels.To only allow numerical data for a Multiple Textboxes question: If you add an "Other" textbox to a close-ended Multiple Choice, Dropdown, or Matrix question, you can validate that field to require respondents to enter their answer in a specific format.The option of using pure HTML, sometimes with a touch of CSS, to complement Java Script form validation was until recently unthinkable.Sure there have been all kinds of whacky plug-ins over the years aimed at achieving this, but never a single standard that we could work towards.For a more detailed introduction to HTML5 form validation you can find some great articles linked under References below. Input constraints can be placed on a Text Field item (for example, through a validator or input Mask).