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improvements to javascript challenges

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Quincy Larson
2015-08-16 04:05:15 -07:00
parent 1fbb2a32f8
commit bce3b34f9b
2 changed files with 143 additions and 121 deletions
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seed/challenges/object-oriented-and-functional-programming.json
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@@ -2,84 +2,93 @@
"name": "Object Oriented and Functional Programming",
"order": 0.010,
"note": [
"Waypoint: Closures",
"Waypoint: Factories",
"Waypoint: Pure Functions",
"Waypoint: Currying Functions",
"Waypoint: Functors",
"Waypoint: Currying Functions"
"Closures",
"Factories",
"Pure Functions",
"Currying Functions",
"Functors",
"Currying Functions"
],
"challenges": [
{
"id":"cf1111c1c15feddfaeb1bdef",
"title":"Waypoint: A Review On Objects",
"title": "Declaring JavaScript Objects as Variables",
"difficulty":0,
"description":[
"Before we dive into Object Oriented Programming, let's revisit JavaScript objects.",
"Give your <code>motorBike</code> object the correct attributes."
"Give your <code>motorBike</code> object a <code>wheels</code>, <code>engine</code> and <code>seats</code> attribute and set them to numbers."
],
"tests":[
"assert(motorBike.wheels===2, 'You should have given motorBike two wheels');",
"assert(motorBike.engine===1, 'You should have given motorBike one engine');",
"assert(motorBike.seats===1, 'You should have given motorBike one seat');"
"assert(typeof(motorBike.engines) === 'number', '<code>engines</code> should be have a <code>engines</code> attribute set to a number.');",
"assert(typeof(motorBike.wheels) === 'number', '<code>wheels</code> should be have a <code>engines</code> attribute set to a number.');",
"assert(typeof(motorBike.seats) === 'number', '<code>seats</code> should be have a <code>engines</code> attribute set to a number.');"
],
"challengeSeed":[
"//Here is a sample Object",
"var car = {",
" \"wheels\":4,",
" \"engine\":1,",
" \"seats\":5",
" \"wheels\":4,",
" \"engines\":1,",
" \"seats\":5",
"};",
"",
"//Now Let's make a similar Object called motorBike",
"//Give it two wheels, one engine and one seat",
"var motorBike = {",
" \"wheels\":0,",
" \"engine\":0,",
" \"seats\":0",
" // Only change code below this line.",
"",
"",
"",
" // Only change code above this line.",
"};",
"",
"(function(){return(JSON.stringify(motorBike));})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint",
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb2bdef",
"title":"Waypoint: Constructing Objects",
"title": "Constructing JavaScript Objects with Functions",
"difficulty":0,
"description":[
"We are also able to create objects using functions.",
""
"We are also able to create objects using <code>constructor</code> functions.",
"Give your <code>motorBike</code> object a <code>wheels</code>, <code>engine</code> and <code>seats</code> attribute and set them to numbers."
],
"tests":[
"assert((new Car()).wheels === 4, \"myCar.wheels should be four. Make sure that you haven't changed this value\");",
"assert(typeof((new Car()).engine) === 'number', 'myCar.engine should be a number');",
"assert(typeof((new Car()).seats) === 'number', 'myCar.seats should be a number');"
"assert(typeof((new Car()).engines) === 'number', '<code>engines</code> should be have a <code>engines</code> attribute set to a number.');",
"assert(typeof((new Car()).wheels) === 'number', '<code>wheels</code> should be have a <code>engines</code> attribute set to a number.');",
"assert(typeof((new Car()).seats) === 'number', '<code>seats</code> should be have a <code>engines</code> attribute set to a number.');"
],
"challengeSeed":[
"// Let's add the properties engine and seats to the car in the same way that the property wheels has been added below. They should both be numbers.",
"var Car = function(){",
" this.wheels = 4;",
" // Only change code below this line.",
" this.wheels = 4;",
" this.engines = 1;",
" this.seats = 1;",
"};",
"",
"var myCar = new Car();",
"var motorBike = new Car();",
"// Only change code above this line.",
"",
"(function(){return(JSON.stringify(myCar));})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb3bdef",
"title":"Waypoint: Understanding Public and Private Properties",
"title":"Understanding Public and Private Properties",
"difficulty":0,
"description":[
"In the last challenge we use the <code>this</code> to reference public properties the current object or function.",
"We can also create variables and functions that aren't accessible from outside the Object"
"We can also create variables and functions that aren't accessible from outside the object."
],
"tests":[
"assert(typeof(myBike.getSpeed)!=='undefined' && typeof(myBike.getSpeed) === 'function', 'The method getSpeed of myBike should be accessible outside the Object');",
"assert(typeof(myBike.speed) === 'undefined', 'We should not been able');",
"assert(typeof(myBike.addUnit === 'undefined'), '');"
"assert(typeof(myBike.getSpeed)!=='undefined' && typeof(myBike.getSpeed) === 'function', 'The method getSpeed of myBike should be accessible outside the object');",
"assert(typeof(myBike.speed) === 'undefined', '<code>myBike.speed</code> should remain undefined.');",
"assert(typeof(myBike.addUnit === 'undefined'), '<code>myBike.addUnit</code> should remain undefined.');"
],
"challengeSeed":[
"//Let's create an object with a two functions. One attached as a property and one not.",
@@ -113,15 +122,16 @@
"",
"if(myBike.hasOwnProperty('getSpeed')){(function(){return(JSON.stringify(myBike.getSpeed()));})();};"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb4bdef",
"title":"Waypoint: Instantiation",
"title":"Instantiation",
"difficulty":0,
"description":[
"Instantiation at it's most basic level is where you are creating a copy of an object from a template for use at a later time",
"The instance inherits all the properties and methods of the original Object"
"Instantiation at it's most basic level is where you are creating a copy of an object from a template for use at a later time.",
"The instance inherits all the properties and methods of the original Object."
],
"tests":[
"assert((new Car()).wheels === 4, 'The property wheels should be four in the object constructor');",
@@ -141,18 +151,19 @@
"",
"(function(){return(JSON.stringify(myCar));})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb7bdef",
"title":"Waypoint: Using .map",
"title":"Using .map",
"difficulty":0,
"description":[
"<code>array = array.map(function(val){",
" return(val+1);",
"});</code>",
"<code>array = array.map(function(val){</code>",
"<code>thinsp;thinsp;return(val+1);</code>",
"<code>});</code>",
"",
"The map method is one of the easiest ways to iterate through an array or object there is. Let's use it now"
"The map method is one of the easiest ways to iterate through an array or object there is. Let's use it now."
],
"tests":[
"assert.deepEqual(array, [4,5,6,7,8], 'You should have added three to each value in the array');",
@@ -167,17 +178,18 @@
"",
"(function(){return(array);})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb8bdef",
"title":"Waypoint: Using .reduce",
"title":"Using .reduce",
"difficulty":0,
"description":[
"Reduce can be useful for condensing and array or numbers into one value.",
"<code>var singleVal = array.reduce(function(previousVal, currentVal){",
" return(previousVal+currentVal);",
"}</code>"
"<code>var singleVal = array.reduce(function(previousVal, currentVal){</code>",
"<code>thinsp;thinsp;return(previousVal+currentVal);</code>",
"<code>}</code>"
],
"tests":[
"assert(singleVal == 30, 'singleVal should have been set to the result of you reduce operation');",
@@ -191,19 +203,19 @@
"",
"(function(){return(singleVal);})()"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c15feddfaeb9bdef",
"title":"Waypoint: Using .filter",
"title":"Using .filter",
"difficulty":0,
"description":[
"",
"filter is a useful method that can filter out values that don't match a certain criteria",
"Let's remove all the values less than six",
"<code>array = array.filter(function(val){",
" return(val<4);",
"});</code>"
"<code>array = array.filter(function(val) {</code>",
"<code>thinsp;thinsp;return(val<4);</code>",
"<code>});</code>"
],
"tests":[
"assert.deepEqual(array, [1,2,3,4,5], 'You should have removed all the values from the array that are less than six');",
@@ -217,17 +229,18 @@
"",
"(function(){return(array);})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c16feddfaeb1bdef",
"title":"Waypoint: Using .sort",
"title":"Using .sort",
"difficulty":0,
"description":[
"You can use the method sort to easily sort the values in the array alphabetically or numerically",
"<code>var array = [1,3,2];",
"array = array.sort();</code>",
"This will return [1, 2, 3]"
"<code>var array = [1,3,2];</code>",
"<code>array = array.sort();</code>",
"This will return <code>[1, 2, 3]</code>"
],
"tests":[
"assert.deepEqual(array, ['alpha', 'beta', 'charlie'], 'You should have sorted the array alphabetically');",
@@ -241,14 +254,15 @@
"",
"(function(){return(array);})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id": "cf1111c1c16feddfaeb2bdef",
"title": "Waypoint: Using .reverse",
"title": "Using .reverse",
"difficulty": 0,
"description": [
"You can use the reverse method to reverse the contents of an array"
"You can use the <code>.reverse()</code> function to reverse the contents of an array."
],
"tests": [
"assert.deepEqual(array, [7,6,5,4,3,2,1], 'You should reverse the array');",
@@ -262,14 +276,15 @@
"",
"(function(){return(array);})();"
],
"challengeType": 1
"challengeType": 1,
"type": "waypoint"
},
{
"id": "cf1111c1c16feddfaeb3bdef",
"title": "Waypoint: Using .concat",
"title": "Using .concat",
"difficulty": 0,
"description": [
"Concat can be used to merge the contents of two arrays into one",
"<code>.concat()</code> can be used to merge the contents of two arrays into one.",
"<code>array = array.concat(otherArray);</code>"
],
"tests": [
@@ -286,16 +301,16 @@
"",
"(function(){return(array);})()"
],
"challengeType": 1
"challengeType": 1,
"type": "waypoint"
},
{
"id":"cf1111c1c16feddfaeb4bdef",
"title":"Waypoint: Using .split",
"title":"Using .split",
"difficulty":0,
"description":[
"",
"You can use the split method to split a string into an array",
"split uses the argument you give to to split the string",
"You can use the <code>.split()</code> method to split a string into an array.",
"split uses the argument you give to to split the string.",
"<code>array = string.split(' ');</code>"
],
"tests":[
@@ -309,14 +324,15 @@
"",
"(function(){return(array);})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
},
{
"id":"cf1111c1c16feddfaeb5bdef",
"title":"Waypoint: Using .join",
"title":"Using .join",
"difficulty":0,
"description":[
"We can use the join method to join each element in an array into a string separated by whatever delimiter you provide as an argument to the join operation",
"We can use the <code>.join()</code> method to join each element in an array into a string separated by whatever delimiter you provide as an argument to the join operation.",
"<code>var joinMe = joinMe.join(\" \");</code>"
],
"tests":[
@@ -330,7 +346,8 @@
"",
"(function(){return(joinMe);})();"
],
"challengeType":1
"challengeType":1,
"type": "waypoint"
}
]
}