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Redolance/preview-image-in-browser.html

Created June 14, 2018 00:23
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preview image in browser object URLs
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preview-image-in-browser.html
<!-- The following code uses object URLs, which is much more efficient than data URL for viewing large images (A data URL is a huge string containing all of the file data, whereas an object URL, is just a short string referencing the file data in-memory):
-->
<!-- java script only -->
<html>
<img id="blah" alt="your image" width="100" height="100" />
<input type="file" onchange="document.getElementById('blah').src = window.URL.createObjectURL(this.files[0])">
</html>
<!-- version jquery. -->
<!-- $('your_selector').attr('src', window.URL.createObjectURL(this.files[0])) -->
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