File: public/asset/vendor/jquery-validation/src/additional/maxsizetotal.js

// Limit the size of all files in a FileList.
$.validator.addMethod( "maxsizetotal", function( value, element, param ) {
	if ( this.optional( element ) ) {
		return true;
	}

	if ( $( element ).attr( "type" ) === "file" ) {
		if ( element.files && element.files.length ) {
			var totalSize = 0;

			for ( var i = 0; i < element.files.length; i++ ) {
				totalSize += element.files[ i ].size;
				if ( totalSize > param ) {
					return false;
				}
			}
		}
	}

	return true;
}, $.validator.format( "Total size of all files must not exceed {0} bytes." ) );