how to use the plug-in html2canvas? each screenshot shows different results. For more information, please see the picture
. The 
box is the area where screenshots need to be taken. The following is the result of saving the screenshot.
here is my code. Can you take a look at it?
saveImg (imgURL) {
html2canvas(document.getElementById("div"),{useCORS: true})
.then((canvas)=>{
console.log(canvas);
document.body.appendChild(canvas);
var img = canvas.toDataURL("image/png")
this.setState({
myImgUrl:img
})
})
}
< div id="div" style= {{width:100,height:50,paddingTop:5,color:"red"}} >
fdsfdsfdsfdsf
<img src={centerImg} style={{width:30,height:20}}/>< / div >