Add HTML Attribute

Used to add render attribute to specific HTML elements. For example a widget can add a new <div> tag with hardcoded ‘class’ attribute or add a new <a> tag with hardcoded ‘target’ and ‘rel’ attributes. This way you need to add if statements to check whether it has classes/target/rel attributed before adding them to the HTML tag. In addition you need to escape user data with esc_attr() to improve security.

Elementor offers another way to add HTML attributes using add_render_attribute() and get_render_attribute_string() methods.

Simple Widget Output

<div id="" class="" role="" aria-label=""> ... </div>

PHP Render Attribute

In the render() method we can add attributes to the HTML tag using add_render_attribute() and retrieve the attribute using get_render_attribute_string().

protected function render() {

	$this->add_render_attribute(
		'wrapper',
		[
			'id' => 'custom-widget-id',
			'class' => [ 'custom-widget-wrapper-class', settings['custom_class'] ],
			'role' => settings['role'],
			'aria-label' => settings['name'],
		]
	);
	?>
	<div <?php echo $this->get_render_attribute_string( 'wrapper' ); ?>> ... </div>
	<?php

}

JS Render Attribute

In the _content_template() method we can add attributes to the HTML tag using addRenderAttribute() and retrieve the attribute using getRenderAttributeString().

protected function _content_template() {
	?>
	<#
	view.addRenderAttribute(
		'wrapper',
		{
			'id': 'custom-widget-id',
			'class': [ 'elementor-tab-title', settings.custom_class ],
			'role': settings.role,
			'aria-label': settings.name,
		}
	);
	#>
	<div ' + view.getRenderAttributeString( 'wrapper' ) + '> ... </div>
	<?php
}