Created
May 21, 2020 08:48
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判断是否支持检查webp格式
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| export const check_webp_support = () => { | |
| return new Promise( reslove => { | |
| let img = new Image(); | |
| img.onload = function () { | |
| let result = (img.width > 0) && (img.height > 0); | |
| reslove(result) | |
| }; | |
| img.onerror = function () { | |
| reslove(false) | |
| }; | |
| img.src = "data:image/webp;base64," + "UklGRhoAAABXRUJQVlA4TA0AAAAvAAAAEAcQERGIiP4HAA=="; | |
| }) | |
| } | |
| //原理： 生成一张src是webp格式的图片，通过判断图片大小是否存在 |
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