You can change the trust settings of certificates to allow specific actions.
For example, you can change the settings to enable the dynamic content and embedded Java Script within the certified document.
We will cover a few samples like validating e-mail address and URLs later. Here we will name it check_input and simply call this function whenever we need to validate simple input data: Note the check_input function at the bottom.
What it does is takes the data passed to the function, strips unwanted characters (extra space, tab, newline) from the beginning and end of the data using the PHP trim() function, strips any quotes escaped with slashes and passes it through htmlspecialchars().
While HTML5 form validation is typically about missing or invalid text inputs, there are other form element types that also require attention. Suppose you have a form on your website that at the bottom asks people to "accept the Terms and Conditions" or something similar.
Each digital signature has an icon identifying its verification status.
So, if the user enters ‘01234’ we should see an error message that would instruct the user about what type of data is valid for this field.
To start, we create a text field and bring up the properties dialog for the field.
It's possible to use the plugin with a form which is placed inside a Bootstrap Modal.
By default, the plugin will not initialize the fields which are disabled, hidden, or not visible.
Here you can see screen captures from Firefox and Chrome: Text alert messages are generated entirely by the browser and will even translate automatically into different languages - something that would be almost impossible using just Java Script.