A simple todo app in javascript

Asked in Box onsite interview. With a node.js server on backend.

$().ready(function() {
   $('#add').on('click', addTask);
   $('#tasks').on('click', markComplete);
   // Alternative way
   // var tasksElement = document.getElementById('tasks');
   // tasksElement.addEventListener('click', markComplete);
   //document.getElementById('task-input').onkeydown = function(e){
   $('#task-input').on('keydown', function(e) {
       if(e && e.keyCode == 13){
            addTask();
       }
   });

   function renderTask(result) {
        var checkboxContainerId = 'check' + result.id;
        var taskTextId = 'tasktext-' + result.id;
        if (result.done == '1') {
            checkedState = ' checked ';
        } else {
            checkedState = '';
        }
        taskHtml = '
  • '; taskHtml += ''; taskHtml += '' + result.data + '
  • '; $('#tasks').append(taskHtml); } function taskAdded(result) { renderTask(result); $('#task-input').val(''); } function renderResults(results) { results.forEach(renderTask); } function addTask(e) { url = 'http://localhost:9898/todo/tasks/create'; inputData = $('#task-input').val(); if (!inputData) { return; } $.ajax({ url: url, type: "POST", data: {data: inputData} , success: taskAdded, }); } function markComplete(e) { var done; if (e.target && e.target.matches("input.task-checkbox")) { var taskId = $(e.target).attr('task-id'); if ($(e.target).is(":checked")) { done = "1"; } else { done = "-1"; } var editUrl = 'http://localhost:9898/todo/tasks/' + taskId + '/edit'; $.ajax({ url: editUrl, type: "POST", data: {done: done}, success: function(result) { } }); } } var getTasksUrl = 'http://localhost:9898/todo/tasks'; $.ajax({ url: getTasksUrl, type: "GET", success: renderResults, }); } );
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