按照网上方法更改html2canvas,增加时间戳
if (isInlineBase64Image(src) || useCORS) {
img.crossOrigin = 'anonymous';
}
if (src.indexOf('data:image') > -1) { // 图片地址后加时间 base64图片不变
// base64 图片操作
img.src = src;
} else {
//path 图片操作
img.src = src + "?" + new Date().getTime();
}
js代码:
emitData(e, ownerVm) {
//显示正在加载
ownerVm.callMethod('isFlagBtn', true)
console.log(1,‘执行方法’)
setTimeout(() => {
const dom = document.getElementById('poster')
window.pageYoffset = 0;
document.documentElement.scrollTop = 0;
document.body.scrollTop = 0;
new html2canvas(dom, {
width: dom.clientWidth, //dom 原始宽度
height: dom.clientHeight,
scrollY: 0,
scrollX: 0,
useCORS: true,
}).then(canvas => {
//隐藏
ownerVm.callMethod('isFlagBtn', false)
// 将生产的canvas转为base64图片3
let img = canvas.toDataURL('image/png')
console.log(4,‘获取图片’)
//传递图片
ownerVm.callMethod('receiveRenderData', img )
}).catch(err => {
console.log(err, ‘获取失败’)
})
}, 1000)
}