html2canvas 截屏 兼容手机端

<template>
    <div>
        <!--<input type="button" id="btnsavaImg" value="检测" @click="check()"/>-->


        <input type="button"  value="检测" @click="check()" style="width: 50px;height: 30px;background-color: red;color: white"/>
        <img src="~static/casino_s.png" id="btnsavaImg" >
        <hr size="10">

        <div id="imgBox" style="margin-top: 100px">

        </div>
    </div>

</template>
<script>

//    npm install html2canvas
    import html2canvas from ‘html2canvas‘;
    export default {
        data () {
            return {

            }
        },
        methods:{
            check(){
                html2canvas(document.querySelector("#btnsavaImg")).then(function(canvas) {
                    document.querySelector(‘#imgBox‘).appendChild(canvas);
                });
            }
        },
        mounted () {
            $loading.hide();
        }
    }

</script>