CSS Form Properties

In general, forms are essential in a single page, and here's my summary of my knowledge of the form:

Table element , form Properties , and form submission (JS knowledge) in turn

1. Form elements:

　　<form action= "Submit the location//not write the words will be submitted to itself" method= "How to send form data" ></form>

Elements within a form:

1)DataList(Data list)

2)keygen(Generate encrypted string)

3)output (output result)

4)meter(measuring device)

2. Form properties:

1)Palceholder: Please enter the user name when the user enters the text, the content within the placeholder disappears

2)Autofocus: Automatically get focus

3)multiple: Multi-file transfer, using in file

4)autocomplete= "on": Automatically replenish remaining content

5)novalidate: Turn off authentication

6)required: Required fields

7)pattern: Custom Validation (pattern= "\d") requires input number, capital D is

3, form submission verification:

Onsubmit= "return function ()"

code example:

    functionCheckform () {//get the value of an email        varemail = document.getElementById ("email")). Value; if(Email = = ""){            return false; }Else if(Email.indexof ("@") ==-1){            return false; }Else{            return true; }    }

Note: If you want to verify the account and verify the password, you need to write Retrun true again.

CSS Form Properties