HTML <track> default atribute

HTML <track> 标籤

Pagsasakop at Paggamit

default Ang atribute ay isang boolean na atribute.

Kung mayroon ito, ito ay nagtutukoy na kung ang unang pagpipilian ng user ay hindi nagsasabi na ang ibang track ang mas mahusay, ang track na ito ay pinapilitan.

Babala:Ang bawat medya na elemento ay may isang setting lamang default Ang elemento ng atribute <track>.

Egemplo

Mayroon dalawang linya sa subtitle. Ang default ay ang "Ingles" subtitle:

<video width="320" height="240" controls>
  <source src="forrest_gump.mp4" type="video/mp4">
  <source src="forrest_gump.ogg" type="video/ogg">
  <track src="fgsubtitles_en.vtt" kind="subtitles" srclang="en" label="English" default>
  <track src="fgsubtitles_no.vtt" kind="subtitles" srclang="no" label="Norwegian">
</video>

ระบบ

<track src="subtitles_en.vtt" default>

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HTML <track> 标籤