HTML部分
<canvas id="deviceId"></canvas>
js部分
$("#deviceId").on("click", function() {
//將Jquery對(duì)象轉(zhuǎn)化為JavaScript對(duì)象
var canvas = $(this).get(0);
//將畫(huà)布轉(zhuǎn)化為base64格式
var url = canvas.toDataURL('image/png');
//JavaScript初始化下載方法
var a = document.createElement('a');
document.body.appendChild(a);
a.href = url;
a.download = '畫(huà)布520.png';
//執(zhí)行下載
a.click();
});
