What are the attributes of HTML? Introduction to the specific usage of the option selected attribute

What are the attributes of HTML? What is the specific use of the option selected attribute? This article introduces in detail the definition and usage of the HTML tag and the specific usage and definition of the selected attribute

The definition and usage of the HTML tag:# The

##option element defines an option (an entry) in a drop-down list.

The browser displays the content in the tag as a menu or an element in the scrolling list of the tag.

The option element is located inside the select element.

HTML

tag optional attributes:

##option selected attribute definition and usage:

The selected attribute specifies that the option is pre-selected when the page loads.

The preselected option will be displayed at the front of the drop-down list.

You can also set the selected attribute through JavaScript after the page is loaded.

option The syntax of the selected attribute:

<option selected="value">

The attribute value description of the option selected attribute:

selected: Pre-select one options.

Html Select How to make a default selection, just add the selected = selected" attribute to an option to become the default option

<select id="isAudit" name="isAudit"> 
<option value="2">全部</option> 
<option value="1" selected = "selected">通过</option> 
<option value="0">未通过</option> 
</select>

Then "pass" is the default selection.

## Tips and notes for the #HTML

tag:

Note: The tag can be used without any attributes, but you usually need to use the value attribute, which will Indicates the content being sent to the server.

Note: Please use this tag with the select element, otherwise this tag is meaningless.

Tip: If there are many list options, you can use < The ;optgroup> tag groups related options.

Differences between HTML and XHTML:

In HTML, does not have a closing tag.

In XHTML , must be closed properly.

Browser support:

All browsers support the tag.

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