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HTML | default Attribute

  • Last Updated : 03 Dec, 2021

The HTML default Attribute is a Boolean attribute. This attribute is used to specify that the track will be enabled if the user’s preferences do not indicate that another track would be more appropriate. 
Note: With a default attribute, there must not be more than one track element per media element.

<track src="subtitles_en.vtt" default>




        body {
            text-align: center;
        h1 {
            color: green;
    HTML default Attribute
    <video width="100"
        <track src=
            <source id="myTrack"

Output : 

Supported Browsers: The browsers supported by HTML default Attribute are listed below: 

  • Google Chrome 18.0
  • Internet Explorer 10.0
  • Firefox 31.0
  • Apple Safari 6.0
  • Opera 15.0


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