Test, formatting fixes for new JS challenges
This commit is contained in:
Heather Kusmierz
parent
1032b71792
commit
6f00d3b5e9
@ -5585,65 +5585,31 @@
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}
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}
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},
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{
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"id": "587d7b7e367417b2b2512b24",
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"title": "Use the Conditional Ternary Operator",
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"description": [
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"The conditional/ternary operator is a one line if-else statement.",
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"The syntax is",
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"<code>condition ? statement-if-true : statement-if-false;</code>",
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"For example:",
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"<code>function findGreater(a, b) {</code>",
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"<code> if(a > b)</code>",
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"<code> return \"a is greater\";</code>",
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"<code> else</code>",
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"<code> return \"b is greater\";</code>",
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"<code>}</code>",
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"The above function can be written using the conditional like:",
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"<code>function findGreater(a, b) {</code>",
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"<code> return a > b ? \"a is greater\" : \"b is greater\";</code>",
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"<code>}</code>",
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"Instructions",
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"Using a Conditional Operator, check if two numbers are equal or not."
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],
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"challengeSeed": [
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"function checkEqual(a, b) {",
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"",
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"}",
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"checkEqual(1, 2);"
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],
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"tail": [],
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"solutions": [],
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"tests": [
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"assert(checkEqual(1, 2) === false, 'message: <code>checkEqual(1, 2)</code> should return false');",
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"assert(checkEqual(1, 1) === true, 'message: <code>checkEqual(1, 1)</code> should return true');",
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"assert(checkEqual(1, -1) === false, 'message: <code>checkEqual(1, -1)</code> should return false');"
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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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{
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"id": "587d7b7e367417b2b2512b23",
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"title": "Use the parseInt function",
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"title": "Use the parseInt Function",
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"description": [
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"The parseInt() function parses a string and returns an integer.",
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"The <code>parseInt()</code> function parses a string and returns an integer. Here's an example:",
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"<code>var a = parseInt(\"007\");</code>",
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"The above function will convert the string \"007\" to an integer 7."
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"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>.",
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"<hr>",
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"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."
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],
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"challengeSeed": [
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"function convertToInteger(str) {",
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"",
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" ",
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"}",
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"",
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"convertToInteger(\"56\");"
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],
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"tail": [],
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"solutions": [],
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"tests": [
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"assert(/parseInt/g.test(code), 'message: <code>convertToInteger</code> should use the <code>parseInt()</code> function');",
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"assert(typeof(convertToInteger(\"56\")) === \"number\", 'message: <code>convertToInteger(\"56\")</code> should return a number');",
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"assert(convertToInteger(\"56\") === 56, 'message: <code>convertToInteger(\"56\")</code> should return 56');",
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"assert(convertToInteger(\"77\") === 77, 'message: <code>convertToInteger(\"56\")</code> should return 77');",
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"assert(!isNaN(convertToInteger(\"JamesBond\")); , 'message: <code>convertToInteger(\"JamesBond\")</code> should return NaN');"
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"assert(convertToInteger(\"77\") === 77, 'message: <code>convertToInteger(\"77\")</code> should return 77');",
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"assert.isNaN(convertToInteger(\"JamesBond\"), 'message: <code>convertToInteger(\"JamesBond\")</code> should return NaN');"
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],
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"type": "waypoint",
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"challengeType": 1,
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@ -5651,26 +5617,28 @@
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},
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{
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"id": "587d7b7e367417b2b2512b22",
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"title": "Use the parseInt function with a radix",
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"title": "Use the parseInt Function with a Radix",
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"description": [
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"The parseInt() function parses a string and returns an integer. The radix variable defines the number system to convert from.",
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"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.",
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"The function call looks like:",
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"parseInt(string, radix);",
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"var a = parseInt(\"11\", 2);",
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"Here the radix variable defines that \"11\" is in binary system.",
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"The above function will convert the string \"11\" to an integer 3.",
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"Instructions",
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"Using the parseInt() function, write a function that converts binary numbers to integers and returns them."
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"<code>parseInt(string, radix);</code>",
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"And here's an example:",
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"<code>var a = parseInt(\"11\", 2);</code>",
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"The radix variable says that \"11\" is in the binary system, or base 2. This example converts the string \"11\" to an integer 3.",
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"<hr>",
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"Use <code>parseInt()</code> in the <code>convertToInteger</code> function so it converts a binary number to an integer and returns it."
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],
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"challengeSeed": [
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"function convertToInteger(str) {",
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"",
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" ",
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"}",
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"",
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"convertToInteger(\"10011\");"
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],
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"tail": [],
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"solutions": [],
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"tests": [
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"assert(/parseInt/g.test(code), 'message: <code>convertToInteger</code> should use the <code>parseInt()</code> function');",
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"assert(typeof(convertToInteger(\"10011\")) === \"number\", 'message: <code>convertToInteger(\"10011\")</code> should return a number');",
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"assert(convertToInteger(\"10011\") === 19, 'message: <code>convertToInteger(\"10011\")</code> should return 19');",
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"assert(convertToInteger(\"111001\") === 57, 'message: <code>convertToInteger(\"111001\")</code> should return 57');",
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@ -5681,43 +5649,68 @@
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"translations": {}
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},
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{
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"id": "587d7b7e367417b2b2512b21",
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"title": "Use multiple Conditional Ternary Operators",
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"id": "587d7b7e367417b2b2512b24",
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"title": "Use the Conditional (Ternary) Operator",
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"description": [
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"In the previous challenge, we used a single conditional operator. Now, we will learn how to use multiple conditionals.",
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"For example:",
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"<code>function findGreaterOrEqual(a, b, c) {</code>",
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"<code> if(a === b)</code>",
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"<code> return \"a and b are equal\";</code>",
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"<code> else if(a > b)</code>",
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"<code> return \"a is greater\";</code>",
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"<code> else</code>",
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"<code> return \"b is greater\";</code>",
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"<code>}</code>",
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"The above function can be written using multiple conditionals like:",
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"<code>function findGreaterOrEqual(a, b) {</code>",
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"<code> return (a === b) ? \"a and b are equal\" : (a > b) ? \"a is greater\" : \"b is greater\";</code>",
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"<code>}</code>",
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"Note that the conditional operator is Right Assosiative.",
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"Instructions",
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"Using a Conditional Operator, check if a number is positive, negative or zero."
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"The <dfn>conditional operator</dfn>, also called the <dfn>ternary operator</dfn>, can be used as a one line if-else expression.",
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"The syntax is:",
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"<code>condition ? statement-if-true : statement-if-false;</code>",
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"The following function uses an if-else statement to check a condition:",
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"<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>",
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"This can be re-written using the <code>conditional operator</code>:",
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"<blockquote>function findGreater(a, b) {<br> return a > b ? \"a is greater\" : \"b is greater\";<br>}</blockquote>",
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"<hr>",
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"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."
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],
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"challengeSeed": [
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"function checkEqual(a, b) {",
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" ",
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"}",
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"",
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"checkEqual(1, 2);"
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],
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"tail": [],
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"solutions": [],
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"tests": [
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"assert(/.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?/gi.test(code), 'message: <code>checkEqual</code> should use the <code>conditional operator</code>');",
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"assert(checkEqual(1, 2) === false, 'message: <code>checkEqual(1, 2)</code> should return false');",
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"assert(checkEqual(1, 1) === true, 'message: <code>checkEqual(1, 1)</code> should return true');",
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"assert(checkEqual(1, -1) === false, 'message: <code>checkEqual(1, -1)</code> should return false');"
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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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{
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"id": "587d7b7e367417b2b2512b21",
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"title": "Use Multiple Conditional (Ternary) Operators",
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"description": [
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"In the previous challenge, you used a single <code>conditional operator</code>. You can also chain them together to check for multiple conditions.",
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"The following function uses if, else if, and else statements to check multiple conditions:",
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"<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>",
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"The above function can be re-written using multiple <code>conditional operators</code>:",
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"<blockquote>function findGreaterOrEqual(a, b) {<br> return (a === b) ? \"a and b are equal\" : (a > b) ? \"a is greater\" : \"b is greater\";<br>}</blockquote>",
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"<hr>",
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"Use multiple <code>conditional operators</code> in the <code>checkSign</code> function to check if a number is positive, negative or zero."
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],
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"challengeSeed": [
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"function checkSign(num) {",
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"",
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" ",
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"}",
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"",
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"checkSign(10);"
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],
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"tail": [],
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"solutions": [],
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"tests": [
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"assert(checkSign(10) === 'positive', 'message: <code>checkSign(10)</code> should return positive');",
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"assert(checkSign(-12) === 'negative', 'message: <code>checkSign(-12)</code> should return negative');",
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"assert(checkSign(0) === 'zero', 'message: </code>checkSign(0)</code> should return zero');"
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"assert(/.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?\\s*?\\?\\s*?.+?\\s*?:\\s*?.+?/gi.test(code), 'message: <code>checkSign</code> should use multiple <code>conditional operators</code>');",
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"assert(checkSign(10) === 'positive', 'message: <code>checkSign(10)</code> should return \"positive\". Note that capitalization matters');",
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"assert(checkSign(-12) === 'negative', 'message: <code>checkSign(-12)</code> should return \"negative\". Note that capitalization matters');",
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"assert(checkSign(0) === 'zero', 'message: <code>checkSign(0)</code> should return \"zero\". Note that capitalization matters');"
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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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]
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}
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}
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