- 下載canvas2image.js和html2canvas.js文件，百度官方即可下載
- 具體代碼如下
<body>
<div class="card-bg">
</div>
</body>
$(function() {
var canvas2 = document.createElement("canvas");
let _canvas = document.querySelector('.card-bg');//需要替換成圖片的html區域
//獲取寬高
var w = parseInt(window.getComputedStyle(_canvas).width);
var h = parseInt(window.getComputedStyle(_canvas).height);
//將canvas畫布放大若干倍，然後盛放在較小的容器內，就顯得不模糊了
canvas2.width = w * 2;
canvas2.height = h * 2;
canvas2.style.width = w + "px";
canvas2.style.height = h + "px";
//可以按照自己的需求，對context的參數修改,translate指的是偏移量
// var context = canvas.getContext("2d");
// context.translate(0,0);
var context = canvas2.getContext("2d");
context.scale(1.85, 1.7);
html2canvas(_canvas,{canvas:canvas2}).then(function(canvas) {
var imgUri = canvas.toDataURL("image/png").replace("image/png", "image/octet-stream"); // 獲取生成的圖片的url
$(".card-bg").html('<img class="down" src="'+imgUri+'" style="width:'+w+'px;">');
})
});
