jQuer+H5头像图片上传编辑裁剪代码

代码片段：

$(".avatar-save").on("click", function() {
var img_lg = document.getElementById('imageHead');
// 截图小的显示框内的内容
html2canvas(img_lg, {
allowTaint: true,
taintTest: false,
onrendered: function(canvas) {
canvas.id = "mycanvas";
//生成base64图片数据
var dataUrl = canvas.toDataURL("image/jpeg");
var newImg = document.createElement("img");
newImg.src = dataUrl;
imagesAjax(dataUrl)
}
});
})