使用 javascript 获取 GIF 图的帧数,如果帧数过大,则不让传到服务器
这里是使用一个插件: github地址为: https://github.com/buzzfeed/libgif-js
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" /> <style type="text/css"> *{ padding: 0; margin: 0; box-sizing: border-box; } </style> </head> <body> <input type="file" name="file" id="file" value="" /> </body> <script type="text/javascript" src="js/libgif.js"></script> <script type="text/javascript"> document.getElementById("file").onchange = function(e){ var filse = this.files; sendFile(filse[0]); } function sendFile(file){ var reader =new FileReader(); reader.readAsDataURL(file); reader.onload=function(e){ var div = document.createElement("div"); var img = document.createElement("img"); div.appendChild(img); img.src = this.result; img.onload = function(){ var rub = new SuperGif({ gif: img} ); rub.load(function(){ console.log(rub.get_length()); }); } } } </script> </html>