HTML Reference
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Quick Reference

The onloadstart event fires when the browser starts looking for the specified audio/video.

Supported HTML tags:

<!-- HTML -->
<video id="my_video" onloadstart="my_function()"></video>
// JavaScript
function my_function() {
    alert('Looking for the video...');
}

Using Only JavaScript

Any of the following are valid.

onloadstart

document.getElementById('my_video').onloadstart = function() {my_function()};

function my_function() {
    alert('Looking for the video...');
}

loadstart

// method 1
document.getElementById('my_video').addEventListener('loadstart', function() {
    alert('Looking for the video...');
});
// method 2
document.getElementById('my_video').addEventListener('loadstart', my_function);

function my_function() {
    alert('Looking for the video...');
}

Event

Bubblesno
Can be cancelledno

HTML Notes:

  • In our HTML section the term “tag” and “element” are often used interchangeably to refer to both the tag used to create a page element and the element created by the tag (<p> tag = <p> element = paragraph on the page)
  • HTML5 is not case sensitive; so <P> is the same as <p>, <H1> is the same as <h1>
  • Global attributes can be used with all HTML tags and are therefore not mentioned on every tag page
  • To write clean, readable HTML code, it is best to use indentation whereas elements within elements are indented (tabbed or spaces) to create something that looks like a project outline
  • The browser will automatically remove any extra spaces and lines in your HTML code when the page is displayed
  • Double quotes or single quotes can be used around HTML attribute values, but when the attribute value itself contains one form of quote, it will be necessary to use the other around the attribute
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