What is HTML5 input number? Detailed introduction of HTML5 input type (internal dependency diagram)-H5 Tutorial-php.cn

What is HTML5 input number? Detailed introduction of HTML5 input type (internal dependency diagram)

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Release： 2018-08-16 17:40:29

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What is HTML5 input number? Detailed introduction to HTML5 input type. This article explains in detail what HTML5 input number is, how to use it, as well as some introduction to HTML5 input type and description of attribute values.

What are the input types of HTML5 input type? :

This chapter provides a comprehensive introduction to these new input types:

email
url
number
range
Date pickers (date, month, week, time, datetime, datetime-local)
search
color

##HTML5 input type - number:

The number type is used for input fields that should contain numeric values.

html5’s new number input type will call up the numeric keyboard when the input box gets focus, increasing the experience. However, on some Android machines, it is still possible to switch character input, and users may accidentally enter non-numeric characters such as " " and "—". After testing, the number type will automatically ignore alphabetic characters and other non-numeric characters, except for the two characters """-""." which can be entered, because these two are symbols for positive and negative numbers and decimal points.

Another point of the number type is that if the content in the input box is not a pure number (either positive or negative) and the content contains some characters, the value of the corresponding dom element will be empty ("" ).

You can also set limits on the numbers accepted:

Example:

Points:

Please use the following attributes to specify the limit on the number type:

What is HTML5 input number? Detailed introduction of HTML5 input type (internal dependency diagram)

Tip: in iPhone Safari supports the number input type and changes the touchscreen keyboard to accommodate it (to display numbers).

HTML 5 type (style) attribute:

This is an example:

Form with different input types:

<form action="demo_form.asp" method="get">
  First name: <input type="text" name="fname" /><br />
  Last name: <input type="text" name="lname" /><br />
  <input type="submit" value="Submit" />
</form>

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Definition and usage:

The type attribute specifies the type of input element.

Note: This attribute is not required, but we think you should always use it.

Syntax:

Attribute value:

What is HTML5 input number? Detailed introduction of HTML5 input type (internal dependency diagram)

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