To create a file upload form, you must use the "file" field within a form with the enctype attribute set to 'multipart/form-data'.
inputEx({ type: 'form', parentEl: 'container1', enctype: 'multipart/form-data', action: 'input_file.php', fields: [ {type: 'file', name: 'textFile', label:'Search file', accept: 'text/*', size: 50 } ], buttons: [ {type: 'submit', value: 'Upload'} ] });