Read and Show a File with Javascript in Yii2

index.php

<?php
$this->registerJsFile('https://unpkg.com/xlsx/dist/xlsx.full.min.js');
$this->registerJs('$(\'#input-excel\').change(function(e){
                var reader = new FileReader();
                reader.readAsArrayBuffer(e.target.files[0]);
                reader.onload = function(e) {
                        var data = new Uint8Array(reader.result);
                        var wb = XLSX.read(data,{type:\'array\'});
                        var htmlstr = XLSX.write(wb,{sheet:"Ejemplo Semanal", type:\'binary\',bookType:\'html\'});
                        $(\'#wrapper\')[0].innerHTML += htmlstr;
                }
        });')
?>
<div id="wrapper">
    <input type="file" id="input-excel" />
</div>