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Test, formatting fixes for new JS challenges

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Heather Kusmierz
2017-01-25 15:39:08 -05:00
parent 1032b71792
commit 6f00d3b5e9
1 changed files with 70 additions and 77 deletions
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challenges/02-javascript-algorithms-and-data-structures/basic-javascript.json
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@ -5585,65 +5585,31 @@
} }
} }
}, },
{
"id": "587d7b7e367417b2b2512b24",
"title": "Use the Conditional Ternary Operator",
"description": [
"The conditional/ternary operator is a one line if-else statement.",
"The syntax is",
"<code>condition ? statement-if-true : statement-if-false;</code>",
"For example:",
"<code>function findGreater(a, b) {</code>",
"<code> if(a > b)</code>",
"<code> return \"a is greater\";</code>",
"<code> else</code>",
"<code> return \"b is greater\";</code>",
"<code>}</code>",
"The above function can be written using the conditional like:",
"<code>function findGreater(a, b) {</code>",
"<code> return a > b ? \"a is greater\" : \"b is greater\";</code>",
"<code>}</code>",
"Instructions",
"Using a Conditional Operator, check if two numbers are equal or not."
],
"challengeSeed": [
"function checkEqual(a, b) {",
"",
"}",
"checkEqual(1, 2);"
],
"tail": [],
"solutions": [],
"tests": [
"assert(checkEqual(1, 2) === false, 'message: <code>checkEqual(1, 2)</code> should return false');",
"assert(checkEqual(1, 1) === true, 'message: <code>checkEqual(1, 1)</code> should return true');",
"assert(checkEqual(1, -1) === false, 'message: <code>checkEqual(1, -1)</code> should return false');"
],
"type": "waypoint",
"challengeType": 1,
"translations": {}
},
{ {
"id": "587d7b7e367417b2b2512b23", "id": "587d7b7e367417b2b2512b23",
"title": "Use the parseInt function", "title": "Use the parseInt Function",
"description": [ "description": [
"The parseInt() function parses a string and returns an integer.", "The <code>parseInt()</code> function parses a string and returns an integer. Here's an example:",
"<code>var a = parseInt(\"007\");</code>", "<code>var a = parseInt(\"007\");</code>",
"The above function will convert the string \"007\" to an integer 7." "The above function converts the string \"007\" to an integer 7. If the first character in the string can't be converted into a number, then it returns <code>NaN</code>.",
"<hr>",
"Use <code>parseInt()</code> in the <code>convertToInteger</code> function so it converts the input string <code>str</code> into an integer, and returns it."
], ],
"challengeSeed": [ "challengeSeed": [
"function convertToInteger(str) {", "function convertToInteger(str) {",
"", " ",
"}", "}",
"",
"convertToInteger(\"56\");" "convertToInteger(\"56\");"
], ],
"tail": [], "tail": [],
"solutions": [], "solutions": [],
"tests": [ "tests": [
"assert(/parseInt/g.test(code), 'message: <code>convertToInteger</code> should use the <code>parseInt()</code> function');",
"assert(typeof(convertToInteger(\"56\")) === \"number\", 'message: <code>convertToInteger(\"56\")</code> should return a number');", "assert(typeof(convertToInteger(\"56\")) === \"number\", 'message: <code>convertToInteger(\"56\")</code> should return a number');",
"assert(convertToInteger(\"56\") === 56, 'message: <code>convertToInteger(\"56\")</code> should return 56');", "assert(convertToInteger(\"56\") === 56, 'message: <code>convertToInteger(\"56\")</code> should return 56');",
"assert(convertToInteger(\"77\") === 77, 'message: <code>convertToInteger(\"56\")</code> should return 77');", "assert(convertToInteger(\"77\") === 77, 'message: <code>convertToInteger(\"77\")</code> should return 77');",
"assert(!isNaN(convertToInteger(\"JamesBond\")); , 'message: <code>convertToInteger(\"JamesBond\")</code> should return NaN');" "assert.isNaN(convertToInteger(\"JamesBond\"), 'message: <code>convertToInteger(\"JamesBond\")</code> should return NaN');"
], ],
"type": "waypoint", "type": "waypoint",
"challengeType": 1, "challengeType": 1,
@ -5651,26 +5617,28 @@
}, },
{ {
"id": "587d7b7e367417b2b2512b22", "id": "587d7b7e367417b2b2512b22",
"title": "Use the parseInt function with a radix", "title": "Use the parseInt Function with a Radix",
"description": [ "description": [
"The parseInt() function parses a string and returns an integer. The radix variable defines the number system to convert from.", "The <code>parseInt()</code> function parses a string and returns an integer. It takes a second argument for the radix, which specifies the base of the number in the string. The radix can be an integer between 2 and 36.",
"The function call looks like:", "The function call looks like:",
"parseInt(string, radix);", "<code>parseInt(string, radix);</code>",
"var a = parseInt(\"11\", 2);", "And here's an example:",
"Here the radix variable defines that \"11\" is in binary system.", "<code>var a = parseInt(\"11\", 2);</code>",
"The above function will convert the string \"11\" to an integer 3.", "The radix variable says that \"11\" is in the binary system, or base 2. This example converts the string \"11\" to an integer 3.",
"Instructions", "<hr>",
"Using the parseInt() function, write a function that converts binary numbers to integers and returns them." "Use <code>parseInt()</code> in the <code>convertToInteger</code> function so it converts a binary number to an integer and returns it."
], ],
"challengeSeed": [ "challengeSeed": [
"function convertToInteger(str) {", "function convertToInteger(str) {",
"", " ",
"}", "}",
"",
"convertToInteger(\"10011\");" "convertToInteger(\"10011\");"
], ],
"tail": [], "tail": [],
"solutions": [], "solutions": [],
"tests": [ "tests": [
"assert(/parseInt/g.test(code), 'message: <code>convertToInteger</code> should use the <code>parseInt()</code> function');",
"assert(typeof(convertToInteger(\"10011\")) === \"number\", 'message: <code>convertToInteger(\"10011\")</code> should return a number');", "assert(typeof(convertToInteger(\"10011\")) === \"number\", 'message: <code>convertToInteger(\"10011\")</code> should return a number');",
"assert(convertToInteger(\"10011\") === 19, 'message: <code>convertToInteger(\"10011\")</code> should return 19');", "assert(convertToInteger(\"10011\") === 19, 'message: <code>convertToInteger(\"10011\")</code> should return 19');",
"assert(convertToInteger(\"111001\") === 57, 'message: <code>convertToInteger(\"111001\")</code> should return 57');", "assert(convertToInteger(\"111001\") === 57, 'message: <code>convertToInteger(\"111001\")</code> should return 57');",
@ -5681,39 +5649,64 @@
"translations": {} "translations": {}
}, },
{ {
"id": "587d7b7e367417b2b2512b21", "id": "587d7b7e367417b2b2512b24",
"title": "Use multiple Conditional Ternary Operators", "title": "Use the Conditional (Ternary) Operator",
"description": [ "description": [
"In the previous challenge, we used a single conditional operator. Now, we will learn how to use multiple conditionals.", "The <dfn>conditional operator</dfn>, also called the <dfn>ternary operator</dfn>, can be used as a one line if-else expression.",
"For example:", "The syntax is:",
"<code>function findGreaterOrEqual(a, b, c) {</code>", "<code>condition ? statement-if-true : statement-if-false;</code>",
"<code> if(a === b)</code>", "The following function uses an if-else statement to check a condition:",
"<code> return \"a and b are equal\";</code>", "<blockquote>function findGreater(a, b) {<br> if(a > b) {<br> return \"a is greater\";<br> }<br> else {<br> return \"b is greater\";<br> }<br>}</blockquote>",
"<code> else if(a > b)</code>", "This can be re-written using the <code>conditional operator</code>:",
"<code> return \"a is greater\";</code>", "<blockquote>function findGreater(a, b) {<br> return a > b ? \"a is greater\" : \"b is greater\";<br>}</blockquote>",
"<code> else</code>", "<hr>",
"<code> return \"b is greater\";</code>", "Use the <code>conditional operator</code> in the <code>checkEqual</code> function to check if two numbers are equal or not. The function should return either true or false."
"<code>}</code>", ],
"The above function can be written using multiple conditionals like:", "challengeSeed": [
"<code>function findGreaterOrEqual(a, b) {</code>", "function checkEqual(a, b) {",
"<code> return (a === b) ? \"a and b are equal\" : (a > b) ? \"a is greater\" : \"b is greater\";</code>", " ",
"<code>}</code>", "}",
"Note that the conditional operator is Right Assosiative.", "",
"Instructions", "checkEqual(1, 2);"
"Using a Conditional Operator, check if a number is positive, negative or zero." ],
"tail": [],
"solutions": [],
"tests": [
"assert(/.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?/gi.test(code), 'message: <code>checkEqual</code> should use the <code>conditional operator</code>');",
"assert(checkEqual(1, 2) === false, 'message: <code>checkEqual(1, 2)</code> should return false');",
"assert(checkEqual(1, 1) === true, 'message: <code>checkEqual(1, 1)</code> should return true');",
"assert(checkEqual(1, -1) === false, 'message: <code>checkEqual(1, -1)</code> should return false');"
],
"type": "waypoint",
"challengeType": 1,
"translations": {}
},
{
"id": "587d7b7e367417b2b2512b21",
"title": "Use Multiple Conditional (Ternary) Operators",
"description": [
"In the previous challenge, you used a single <code>conditional operator</code>. You can also chain them together to check for multiple conditions.",
"The following function uses if, else if, and else statements to check multiple conditions:",
"<blockquote>function findGreaterOrEqual(a, b) {<br> if(a === b) {<br> return \"a and b are equal\";<br> }<br> else if(a > b) {<br> return \"a is greater\";<br> }<br> else {<br> return \"b is greater\";<br> }<br>}</blockquote>",
"The above function can be re-written using multiple <code>conditional operators</code>:",
"<blockquote>function findGreaterOrEqual(a, b) {<br> return (a === b) ? \"a and b are equal\" : (a > b) ? \"a is greater\" : \"b is greater\";<br>}</blockquote>",
"<hr>",
"Use multiple <code>conditional operators</code> in the <code>checkSign</code> function to check if a number is positive, negative or zero."
], ],
"challengeSeed": [ "challengeSeed": [
"function checkSign(num) {", "function checkSign(num) {",
"", " ",
"}", "}",
"",
"checkSign(10);" "checkSign(10);"
], ],
"tail": [], "tail": [],
"solutions": [], "solutions": [],
"tests": [ "tests": [
"assert(checkSign(10) === 'positive', 'message: <code>checkSign(10)</code> should return positive');", "assert(/.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?/gi.test(code), 'message: <code>checkSign</code> should use multiple <code>conditional operators</code>');",
"assert(checkSign(-12) === 'negative', 'message: <code>checkSign(-12)</code> should return negative');", "assert(checkSign(10) === 'positive', 'message: <code>checkSign(10)</code> should return \"positive\". Note that capitalization matters');",
"assert(checkSign(0) === 'zero', 'message: </code>checkSign(0)</code> should return zero');" "assert(checkSign(-12) === 'negative', 'message: <code>checkSign(-12)</code> should return \"negative\". Note that capitalization matters');",
"assert(checkSign(0) === 'zero', 'message: <code>checkSign(0)</code> should return \"zero\". Note that capitalization matters');"
], ],
"type": "waypoint", "type": "waypoint",
"challengeType": 1, "challengeType": 1,