This lesson describes the different attributes for the HTML <input> element.
The input value attribute specifies an initial value for an input field.
The input readonly attribute specifies that an input field is read-only.
A read-only input field cannot be modified (however, a user can tab to it, highlight it and copy text from it).
The value of a read-only input field will be sent when submitting the form.
The input disabled attribute specifies that an input field should be disabled.
A disabled input field is unusable and unclickable.
The value of a disabled input field will not be sent when submitting the form.
The input size attribute specifies the visible width, in characters, of an input field.
The default value for size is 20.
The size attribute works with the following input type: text, search, tel, url, email and password.
The input maxlength attribute specifies the maximum number of characters allowed in an input field.
When the maxlength attribute is set, the input field will not accept more than the specified number of characters. However, the attribute does not provide any feedback.
The input min and max attributes specify the minimum and maximum values for an input field.
The min and max attributes work with the following input types: number, range, date, datetime-local, month, time and week.
The input multiple attribute specifies that the user is allowed to enter more than one value in an input field.
The multiple attribute works with the following input types: email and file.
The input pattern attribute specifies a regular expression that the input field's value is checked against, when the form is submitted.
The pattern attribute work with the following input types: text, date, search, url, tel, email and password.
Use the global title attribute to describe the pattern to help the user.
The input placeholder attribute specifies a short hint that describes the expected value of an input field (a sample value or a short description of the expected format).
The short hint is displayed in the input field before the user enters a value.
The placeholder attribute works with the following input types: text, search, url, tel, email and password
The input required attribute specifies that an input field must be filled out before submitting the form.
The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, readio and file.
The input step attribute specifies the allowed number intervals for an input field.
The step attribute works with the following input types: number, range, date, datetime-local, month, time and week.
The input autofocus attribute specifies that an input field should automatically get focus when the page loads.
The input height and width attributes specify the height and width of an <input type="image"> element.
The input list attribute refers to a <datalist> element that contains pre-defined options for an <input> element.
The input autocomplete attribute specifies whether a form or an input field should have autocomplete on or off
Autocomplete allows the browser to predict the value. When a user starts to type in a field, the browser should display options to fill in the field, based on earlier typed values.
The autocomplete attribute works with <form> and the following input types: text, search, url, tel, email, password, datepickers, range and color.