open a local file with js

loadFile.js

function loadFile(type) {
	var fileSelector = $('<input type="file">');
	if (type) {
		fileSelector.attr('accept', type);
	}
	fileSelector.change(function () {
		var file = fileSelector[0].files[0];
		fname = file.name;
		var reader = new FileReader();
		reader.onload = function (e) {
			var contents = e.target.result;
			loadData(contents);
		};
		reader.readAsText(file);
	});
	fileSelector.click();
}