GlobalEventHandlers.onloadstart
The onloadstart property of the GlobalEventHandlers mixin is an event handler representing the code to be called when the loadstart (en-US) event is raised (when progress has begun on the loading of a resource.)
Syntax
img.onloadstart = funcRef;
Value
funcRef is the handler function to be called when the resource's loadstart event fires.
Examples
HTML content
<img src="myImage.jpg">JavaScript content
// 'loadstart' fires first, then 'load', then 'loadend'
image.addEventListener('load', function(e) {
console.log('Image loaded');
});
image.addEventListener('loadstart', function(e) {
console.log('Image load started');
});
image.addEventListener('loadend', function(e) {
console.log('Image load finished');
});Specifications
| Specification |
|---|
| HTML Standard # handler-onloadstart |
Browser Compatibility
BCD tables only load in the browser