函数

    const fileInput = document.createElement('input');
    fileInput.type = 'file';
    function ImageUpload({ accept, fileType, call, error }){
            fileInput.accept = accept;
            fileInput.value = '';
            fileInput.onchange = () => {
            if(fileInput.files.length > 0){
                let status = 0;
                let keys = '';
                if(fileType === 'audio'){
                    const reg = /.\.(mp3|MP3)$/;
                    keys = 'mp3';
                    if(reg.test(fileInput.files[0].name)){
                        status = 1;
                    }
                } else if(fileType === 'video'){
                    const reg = /.\.(mp4|MP4)$/;
                    keys = 'mp4';
                    if(reg.test(fileInput.files[0].name)){
                        status = 1;
                    }
                } else if(fileType === 'image'){
                    const reg = /.\.(jpeg|jpg|png|gif|GIF|PNG|JPG|JPEG|JPG)$/;
                    keys = 'jpeg、jpg、png、gif';
                    if(reg.test(fileInput.files[0].name)){
                        status = 1;
                    }
                } else if(fileType === 'statsImg'){
                    const reg = /.\.(jpeg|jpg|png|PNG|JPG|JPEG|JPG)$/;
                    keys = 'jpeg、jpg、png';
                    if(reg.test(fileInput.files[0].name)){
                        status = 1;
                    }
                }
                if(status){
                    call(fileInput.files[0]);
                } else{
                    error && error();
                    alart("上传文件有误")
                }
            }
        };
        fileInput.click();
    }