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Three ways to use JavaScript to determine whether an image has been loaded_javascript skills
Three ways to use JavaScript to determine whether an image has been loaded_javascript skills
Sometimes you need to get the size of the image, which needs to be done after the image is loaded. There are three ways to achieve this, which are introduced one by one below.
1. Load event
< !DOCTYPE HTML>
loading...
Tested, all browsers show "loaded" indicates that all browsers support the load event of img.
2. readystatechange event
< !DOCTYPE HTML>
loading...
readyState is complete and loaded indicates that the image has been loaded. Tested that IE6-IE10 support this event, other browsers do not support it.
3. Complete attribute of img
loading...
Polling continuously monitors the complete attribute of img. If it is true, it indicates that the image has been loaded and stops polling. This attribute is supported by all browsers.
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