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HTML DOM Video preload Property
The HTML DOM Video preload property returns a string corresponding to when the creator thinks the video data should load. Though sometimes this may be ignored.Default value is ‘metadata’.
Syntax
Following is the syntax −
Returning string value
mediaObject.preload
Setting preload to a string
mediaObject.preload = “auto|metadata|none”
Let us see an example of HTML DOM Video preload property −
Example
<!DOCTYPE html> <html> <head> <title>HTML DOM Video preload</title> <style> * { padding: 2px; margin:5px; } form { width:70%; margin: 0 auto; text-align: center; } input[type="button"] { border-radius: 10px; } </style> </head> <body> <form> <fieldset> <legend>HTML-DOM-Video-preload</legend> <video id="demo" width="320" preload=”none” controls><source src="http://www.tutorialspoint.com/html5/foo.mp4" type="video/mp4"></video><br> <input type="button" onclick="getTrackDetails()" value="Preload Video"> <div id="divDisplay"></div> </fieldset> </form> <script> var divDisplay = document.getElementById("divDisplay"); var demo = document.getElementById("demo"); divDisplay.textContent = 'Data Savings mode on. Play video to load it'; function getTrackDetails() { demo.preload = 'metadata' divDisplay.textContent = 'Data Savings mode off. Preload enabled'; } </script> </body> </html>
Output
Before clicking ‘Preload Video’ button −
After clicking ‘Preload Video button −
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