HTML 5 <template> Tag
<template> tag allows you to declare fragments HTML fragments that can be cloned and inserted into the document by script.
The contents of the
<template> tag are not rendered upon page load. Rather, they are cloned and inserted into the DOM when they need to be used - which could be based on an event such as user input.
The basic idea behind the
<template> element is that it can be used over and over again. You can use the template as is, or you could add to it, for example, data from a database. Therefore it could be used to populate a large table with data, or a select list with new options perhaps based on user input.
<template> element is used, it is not part of the document. Therefore, you can't reference it through the DOM, for example, using
document.getElementById or similar code. Also, until the
<template> element is used, none of its contents are downloaded. So if the
<template> contains say, an image, that image won't be downloaded until the
<template> is cloned and inserted into the document.
HTML tags can contain one or more attributes. Attributes are added to a tag to provide the browser with more information about how the tag should appear or behave. Attributes consist of a name and a value separated by an equals (=) sign, with the value surrounded by double quotes. Here's an example,
There are 3 kinds of attributes that you can add to your HTML tags: Element-specific, global, and event handler content attributes.
The attributes that you can add to this tag are listed below.
The following table shows the attributes that are specific to this tag/element.
The following attributes are standard across all HTML 5 tags (although the
tabindex attribute does not apply to
For a full explanation of these attributes, see HTML 5 global attributes.
Event Handler Content Attributes
Event handler content attributes enable you to invoke a script from within your HTML. The script is invoked when a certain "event" occurs. Each event handler content attribute deals with a different event.
For a full list of event handlers, see HTML 5 event handler content attributes.