objectdrills2.js

objectdrills2.js

1.)make student report
function makeStudentsReport(data) {//function name w/ argument
  var answers = [];//create an empty array
  for (var i=0; i<data.length; i++) {//for loop that measures length
    var reports = data[i];//create another variable that has the argument
    //inputting the for loop variable?
    answers.length(reports.name  + reports.grade);//ask the computer to 
    //print the length of the answers
  }
  return answers;//returning the array with proper information 
}

console.log['Sarah', 'C'];
console.log['David', 'A']

//only prints the letter grade, and not name:grade
//work with pedro

CORRECT ANSWER:
1.)make student report
function makeStudentsReport(data) {//function name w/ argument
  var answers = [];//create an empty array
  for (var i=0; i<data.length; i++) {//for loop that measures length
    var reports = data[i];//create another variable that has the argument
    //inputting the for loop variable?
     answers.push( '[' + reports.name + ']' + ': ' + '[' + reports.grade + ']');

  }
  return answers;//returning the array with proper information 
}

//console.log('Sarah', 'C');

console.log (makeStudentsReport([ {name: 'Billy Boy', grade: 'D'},
                    {name: 'Serious Sara', grade: 'B'}, 
                    {name: 'Tepid Tom', grade: 'C'} ]));



2.) enroll in summer school 
//factory function solution option 

//should return status: in summer school
//solution a parameterized factory function? 

WHAT I HAVE SO FAR : (ASSISTANCE FROM PEDRO)
var studentData = [
  {
    name: 'Tim',
    status: 'Current student',
    course: 'Biology'
  },
  {
    name: 'Sue',
    status: 'Withdrawn',
    course: 'Mathematics'
  },
  {
    name: 'Liz',
    status: 'On leave',
    course: 'Computer science'
  }
];

function enrollInSummerSchool(students) {
    students = [];
  studentData.forEach(function(obj) {
    Object.values(obj).forEach(function(value) {
     studentData.status = 'In Summer School';
      students.status = studentData.status
      //console.log(studentData);
      });
    });
      
    enrollInSummerSchool(); 
}
     //function enrollInSummerSchool(students) 

                      
  //studentData.forEach(function(obj){
    //Object.values(obj).forEach(function(value) {
      //studentData['status'] = 'In Summer School';
      //console.log(studentData);
    //}
      //}
    //}
                               
                               
 /* From here down, you are not expected to understand.... for now :)
  Nothing to see here!

*/

// tests


function testIt() {
  var testData = [
    {
      name: 'Burt',
      status: 'Playing hooky',
      course: 'Biology'
    },
    {
      name: 'Melanie',
      status: 'Sick',
      course: 'Mathematics'
    },
    {
      name: 'Leonard',
      status: 'AWOL',
      course: 'Computer science'
    }
  ];

  var results = enrollInSummerSchool(testData);

  if (!(results && results instanceof Array)) {
    console.error('FAILURE: `enrollSummerSchool` must return an array');
    return
  }

  for (var i=0; i<testData.length; i++) {
    var result = results.find(function(_result) {
      return (
        _result.name === testData[i].name &&
        _result.course === testData[i].course &&
        _result.status === 'In Summer school');
    });
    if (!result) {
      console.error(
        'FAILURE: `enrollSummerSchool` should return ' +
        'original key/value pairs for each student, and ' +
        'update `status` to "In Summer school"');
      return
    }
  }
  console.info('SUCCESS: `enrollSummerSchool` is working');
}

testIt();

3.) find id problem
SOLUTION 3/7/17 CODE WORKED :) 
// you can pass in `scratchData` to test out `findByid`
// your function
var scratchData = [
  {id: 22, foo: 'bar'},
  {id: 28, foo: 'bizz'},
  {id: 19, foo: 'bazz'}
];



//Return the id key, which value is a number
function findById(items, idNum) {
  scratchData.forEach(function(obj){
    console.log(obj.id);
  })

}



4.) validateKeys problem
//function called validateKeys
//function validateKeys takes two arguments, object & expectedKeys
//argument object is an object to validate keys 
//argument expectedKeys is an array of keys found in object
//return true if object has all of the keys from 
// expectedKeys AND no additional keys
// return false if 1 or more key is missing from object OR if object 
// has extra keys not in expectedKeys

//SOLUTION SHOULD RETURN BOOLEAN VALUE

//QUESTION:when a problem mentions 'if' does that mean you HAVE to 
//use an if, if/else, or else/if statement? 


//possibly use try catch finally blocks to solve problem

SOLUTION 3/7/17 CODE WORKED! :) 
// running the function with `objectA` and `expectedKeys`
// should return `true`
var objectA = {
  id: 2,
  name: 'Jane Doe',
  age: 34,
  city: 'Chicago'
}

// running the function with `objectA` and `expectedKeys`
// should return `false`
var objectB = {
  id: 3,
  age: 33,
  city: 'Peoria'
}

var expectedKeys = [
  'id', 'name', 'age', 'city'
];

function validateKeys(object, expectedKeys) {  
 if (objectA.keys != expectedKeys.length){
  return true; 
} else (objectB.keys > expectedKeys.length)
  return false;

}
 console.log(validateKeys(objectA,expectedKeys));
 console.log(validateKeys(objectB,expectedKeys));


//5.) to do list --factory functions problem 



WORK WITH PEDRO 3/10/17
1.) //find id number 
// you can pass in `scratchData` to test out `findByid`
// your function
var scratchData = [
  {id: 22, foo: 'bar'},
  {id: 28, foo: 'bizz'},
  {id: 19, foo: 'bazz'}
];



//Return the id key, which value is a number
function findById(items, idNum) {
  for(var i = 0; i < items.length; i ++ ){
    if(items[i].id == idNum) {  
      return items[i]; 
    }
    //console.log(obj.id);
  }

}



//if(items[i].id == idNum) { returns items[i] }
console.log (findById(scratchData, 28));


// if (obj == idNum){
//   return 'id' + ':' + 'foo' + ':' + 'bar';
// }

//if(obj.id == idNum) { return obj }


2.) //running the function with `objectA` and `expectedKeys`
// should return `true`
var objectA = {
  id: 2,
  name: 'Jane Doe',
  age: 34,
  city: 'Chicago'
}

// running the function with `objectA` and `expectedKeys`
// should return `false`
var objectB = {
  id: 3,
  age: 33,
  city: 'Peoria'
}

var expectedKeys = [
  'id', 'name', 'age', 'city'
];

function validateKeys(object, expectedKeys) {  
 if (objectA.keys == expectedKeys){
  return true; 
} else {
  return false;
}
  
}
 console.log(validateKeys(objectA,expectedKeys));
 console.log(validateKeys(objectB,expectedKeys));

//first key i find not in expectedKeys return false
//if all keys in expectedKeys return true 
//if there are not keys in expectedKeys are not in object


5.) To Dos--Factory Function
//function makeToDos(owner, toDos) {
  
//}



var makeToDos = function (owner, toDos) {
  return {
    owner: owner, 
    toDos: toDos,
    makeToDos.generateHTML = function () {
  let result = '';
  result += '<li> eat </li> \n';
  result += '<li> sleep </li> \n';
  result += '<li>  rave </li> \n';
  result += '<li> repeat </li> \n';
};
  };
}

var lisaToDos = makeToDos('Lisa', ['eat','sleep','rave','repeat']);



//function makeToDos(owner, toDos) {
   // your code here
//}

//makeToDos : function (name, items, time)

//var toDosList = new toDosItems;
//toDosItems.name = name;
//toDosItems.items = items;
//toDosItems.time = time; 
//toDosItems.generateHTML = function () {
  //output = '';
  //output += 'Name:' +
//}


//var JessiesToDos = function makeToDos;
//owner.name = "jessie";
//owner.toDos = ['eat','sleep','rave','repeat'];


//\n = new line

//makeToDos.generateHTML = function () {
  //let results = '';
  //results += '<li> eat </li>'
  //results += '<li> sleep </li>'
//}


toast & tech 3/14/17 (messing around w/ #5 problem)
                      var makeToDos = function (owner, toDos) {
  return {
    owner: owner,
    toDos: toDos,
    generateHTML : function () {
   result = '';
  result += '<li> eat </li> \n';
  result += '<li> sleep </li> \n';
  result += '<li>  rave </li> \n';
  result += '<li> repeat </li> \n';
}
  };
}

var lisaToDos = makeToDos('Lisa', ['eat','sleep','rave','repeat']);

//currently only printing the entire problem, not the answer expected