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If you want to complete a good work, you must make it perfect. For example, using jQuery to implement the image upload function, can we preview it before uploading? This article mainly shares with you a simple example of the jQuery image file preview function before uploading. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. I hope you can use jQuery to preview image files before uploading them.
1. First prepare a p
onchange trigger event
<input type="file" onchange="preview(this)" ></span> <p id="preview"></p>
2. Write JS code
//上传图片之前预览图片 function preview(file){ if (file.files && file.files[0]){ var reader = new FileReader(); reader.onload = function(evt){ $("#preview").html('<img src="' + evt.target.result + '" width="95px" height="50px" />'); } reader.readAsDataURL(file.files[0]); }else{ $("#preview").html('<p style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src=\'' + file.value + '\'"></p>'); } }
Have you mastered it? This is a good jQuery technique, everyone should try it quickly.
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