fix(challenges): Improve description in existing object challenges
This commit is contained in:
manish-giri
committed by
Mrugesh Mohapatra
Mrugesh Mohapatra
parent
89306fb875
commit
a6d031a0f6
@@ -1089,8 +1089,8 @@
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"In the <dfn>goodStr</dfn> above, you can use both quotes safely by using the backslash <code>\\</code> as an escape character.",
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"<strong>Note</strong><br/>The backslash <code>\\</code> should not be be confused with the forward slash <code>/</code>. They do not do the same thing.",
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"<hr>",
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"Change the provided string to a string with single quotes at the beginning and end and no escape characters.",
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"Right now, the <code><a></code> tag in the string uses double quotes everywhere. You will need to change the outer quotes to single quotes so you can remove the escape characters."
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"Change the provided string to a string with single quotes at the beginning and end and no escape characters.",
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"Right now, the <code><a></code> tag in the string uses double quotes everywhere. You will need to change the outer quotes to single quotes so you can remove the escape characters."
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],
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"releasedOn": "January 1, 2016",
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"challengeSeed": [
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@@ -2697,8 +2697,8 @@
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],
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"type": "waypoint",
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"challengeType": 1,
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"translations": {}
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},
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"translations": {}
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},
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{
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"id": "56533eb9ac21ba0edf2244c3",
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"title": "Assignment with a Returned Value",
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@@ -4229,9 +4229,12 @@
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"description": [
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"You may have heard the term <code>object</code> before.",
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"Objects are similar to <code>arrays</code>, except that instead of using indexes to access and modify their data, you access the data in objects through what are called <code>properties</code>.",
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"Here's a sample object:",
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"<blockquote>var cat = {<br> \"name\": \"Whiskers\",<br> \"legs\": 4,<br> \"tails\": 1,<br> \"enemies\": [\"Water\", \"Dogs\"]<br>};</blockquote>",
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"Objects are useful for storing data in a structured way, and can represent real world objects, like a cat.",
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"Here's a sample cat object:",
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"<blockquote>var cat = {<br> \"name\": \"Whiskers\",<br> \"legs\": 4,<br> \"tails\": 1,<br> \"enemies\": [\"Water\", \"Dogs\"]<br>};</blockquote>",
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"In this example, all the properties are stored as strings, such as - <code>\"name\"</code>, <code>\"legs\"</code>, and <code>\"tails\"</code>. However, you can also use numbers as properties. You can even omit the quotes for single-word string properties, as follows:",
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"<blockquote>var anotherObject = {<br> make: \"Ford\",<br> 5: \"five\",<br> \"model\": \"focus\"<br>};</blockquote>",
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"However, if your object has any non-string properties, JavaScript will automatically typecast them as strings.",
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"<hr>",
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"Make an object that represents a dog called <code>myDog</code> which contains the properties <code>\"name\"</code> (a string), <code>\"legs\"</code>, <code>\"tails\"</code> and <code>\"friends\"</code>.",
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"You can set these object properties to whatever values you want, as long <code>\"name\"</code> is a string, <code>\"legs\"</code> and <code>\"tails\"</code> are numbers, and <code>\"friends\"</code> is an array."
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@@ -4348,8 +4351,9 @@
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"title": "Accessing Object Properties with Bracket Notation",
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"description": [
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"The second way to access the properties of an object is bracket notation (<code>[]</code>). If the property of the object you are trying to access has a space in its name, you will need to use bracket notation.",
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"However, you can still use bracket notation on object properties without spaces.",
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"Here is a sample of using bracket notation to read an object's property:",
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"<blockquote>var myObj = {<br> \"Space Name\": \"Kirk\",<br> \"More Space\": \"Spock\"<br>};<br>myObj[\"Space Name\"]; // Kirk<br>myObj['More Space']; // Spock</blockquote>",
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"<blockquote>var myObj = {<br> \"Space Name\": \"Kirk\",<br> \"More Space\": \"Spock\",<br> \"NoSpace\": \"USS Enterprise\"<br>};<br>myObj[\"Space Name\"]; // Kirk<br>myObj['More Space']; // Spock<br>myObj[\"NoSpace\"]; // USS Enterprise</blockquote>",
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"Note that property names with spaces in them must be in quotes (single or double).",
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"<hr>",
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"Read the values of the properties <code>\"an entree\"</code> and <code>\"the drink\"</code> of <code>testObj</code> using bracket notation and assign them to <code>entreeValue</code> and <code>drinkValue</code> respectively."
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@@ -4401,11 +4405,11 @@
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"id": "56533eb9ac21ba0edf2244c9",
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"title": "Accessing Object Properties with Variables",
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"description": [
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"Another use of bracket notation on objects is to use a variable to access a property. This can be very useful for iterating through lists of the object properties or for doing the lookup.",
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"Another use of bracket notation on objects is to access a property which is stored as the value of a variable. This can be very useful for iterating through an object's properties or when accessing a lookup table.",
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"Here is an example of using a variable to access a property:",
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"<blockquote>var someProp = \"propName\";<br>var myObj = {<br> propName: \"Some Value\"<br >};<br>myObj[someProp]; // \"Some Value\"</blockquote>",
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"Here is one more:",
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"<blockquote>var myDog = \"Hunter\";<br>var dogs = {<br> Fido: \"Mutt\",\n Hunter: \"Doberman\",\n Snoopie: \"Beagle\"<br >};<br>var breed = dogs[myDog];<br>console.log(breed);// \"Doberman\"</blockquote>",
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"<blockquote>var dogs = {<br> Fido: \"Mutt\",\n Hunter: \"Doberman\",\n Snoopie: \"Beagle\"<br>};<br>var myDog = \"Hunter\";<br>var myBreed = dogs[myDog];<br>console.log(myBreed); // \"Doberman\"</blockquote>",
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"Another way you can use this concept is when the property's name is collected dynamically during the program execution, as follows:",
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"<blockquote>var someObj = {<br> propName: \"John\"<br>};<br>function propPrefix(str) {<br> var s = \"prop\";<br> return s + str;<br>}<br>var someProp = propPrefix(\"Name\"); // someProp now holds the value 'propName'<br>console.log(obj[someProp]); // \"John\"</blockquote>",
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"Note that we do <em>not</em> use quotes around the variable name when using it to access the property because we are using the <em>value</em> of the variable, not the <em>name</em>.",
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"<hr>",
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"Use the <code>playerNumber</code> variable to look up player <code>16</code> in <code>testObj</code> using bracket notation. Then assign that name to the <code>player</code> variable."
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