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Graphic and text examples of new HTML5 form elements

零下一度

Jul 16, 2017 pm 03:44 PM

h5 html5 form

This article introduces the new form elements and form attributes of html5.

First of all, let’s talk about a new function of the form in html5. In our previous html, the form elements must be placed inside the form element. In html5, they can be written on the page. Anywhere, and then add a form attribute to the element. The value of the form attribute is the id of the form form, as follows:

[html] view plain copy 
<form method="get" id="test">  
      <input type="text" name="name"/>  
      <input type="password" name="password"/>  
      <input type="submit" value="提交">  
 </form>  
<input type="text" name="confirm" form="test">

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The form element in the form element does not need to add the form attribute. If you want to use form To obtain the values of all form elements, the form attribute must be added to the form elements outside the form element. Elements such as input, select, textarea, etc. all meet this function.

HTML5 has the following new form elements:




Note: Not all browsers support the new HTML5 form elements, but you can use them, even if the browser does not support the form attribute , it can still be displayed as a regular form element.

HTML5 element The

element specifies a list of options for an input field.

attribute specifies that the form or input field should have the auto-complete function. When the user begins typing in an autocomplete field, the browser should display the filled-in options in that field:
Use the list attribute of the element to bind to the element.

<!DOCTYPE html>
<html>
<body>

<form action="demo-form.php" method="get">
<input list="browsers" name="browser">
<datalist id="browsers">
  <option value="Internet Explorer">
  <option value="Firefox">
  <option value="Chrome">
  <option value="Opera">
  <option value="Safari">
</datalist>
<input type="submit">
</form>

<p><strong>注意:</strong> Internet Explorer 9（更早IE版本），Safari不支持 datalist 标签。</p>

</body>
</html>

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HTML5 element

The role of the element is to provide a way to authenticate users reliable method. The

tag specifies the key pair generator field used for the form.
When the form is submitted, two keys will be generated, one is the private key and the other is the public key.
The private key is stored on the client, and the public key is sent to the server. The public key can be used later to verify the user's client certificate.

<!DOCTYPE html>
<html>
<body>

<form action="demo_keygen.php" method="get">
  用户名: <input type="text" name="usr_name">
  加密: <keygen name="security">
  <input type="submit">
</form>

<p><strong>注意:</strong> Internet Explorer 不支持 keygen 标签。</p>

</body>
</html>

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HTML5 element

element is used to Different types of output, such as calculations or script output:

<!DOCTYPE html>
<html>
<body>

<form oninput="x.value=parseInt(a.value)+parseInt(b.value)">0
<input type="range" id="a" value="50">100
+<input type="number" id="b" value="50">
=<output name="x" for="a b"></output>
</form>

<p><strong>注意:</strong>  Internet Explorer 不支持 output 标签。</p>

</body>
</html>

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##HTML5 new form elements

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