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SaintPeter 2015-12-22 00:59:26 -08:00
parent 882a1c0818
commit 353d48d38e
1 changed files with 36 additions and 15 deletions
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51
challenges/01-front-end-development-certification/basic-javascript.json
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@ -1914,8 +1914,12 @@
"assert(1===1, 'message: message here');"
],
"challengeSeed": [
"function myFunction() {",
" ",
" console.log(myVar);",
"}",
"",
"",
"console.log(myVar);",
""
],
"tail": [
@ -4127,21 +4131,44 @@
"description": [
"If you have a multi-dimensional array, you can use the same logic as the prior waypoint to loop through both the array and any sub-arrays. Here is an example:",
"<blockquote>var arr = [<br /> [1,2], [3,4], [5,6]<br />];<br />for (var i=0; i &lt; arr.length; i++) {<br /> for (var j=0; k &lt; arr[i].length; j++) {<br /> console.log(arr[i][j]);<br /> }<br />}</blockquote>",
"This outputs each sub-element in <code>arr</code> one at a time. Note that for the inner loop we are checking the <code>.length</code> of <code>arr[i]</code>, since <code>arr[i]</code> is itself an array."
"This outputs each sub-element in <code>arr</code> one at a time. Note that for the inner loop we are checking the <code>.length</code> of <code>arr[i]</code>, since <code>arr[i]</code> is itself an array.",
"<h4>Instructions</h4>The function <code>multiplyAll</code> will be passed a multi-dimensional array, <code>arr</code>. Loop through both levels of <code>arr</code> and multiply <code>product</code> by each one."
],
"releasedOn": "11/27/2015",
"tests": [
"assert(1===1, 'message: message here');"
"assert(multiplyAll([[1],[2],[3]]) === 6, 'message: <code>multiplyAll([[1],[2],[3]]);</code> should return <code>6</code>');",
"assert(multiplyAll([[1,2],[3,4],[5,6,7]]) === 5040, 'message: <code>multiplyAll([[1,2],[3,4],[5,6,7]])</code> should return <code>5040</code>');",
"assert(multiplyAll([[5,1],[0.2, 4, 0.5],[3, 9]]) === 54, 'message: <code>multiplyAll([[5,1],[0.2, 4, 0.5],[3, 9]]);)</code> should return <code>54</code>');"
],
"challengeSeed": [
"function multiplyAll(arr) {",
" var product = 1;",
" // Only change code below this line",
"",
" // Only change code above this line",
" return product;",
"}",
"",
"// Modify values below to test your code",
"multiplyAll([[1,2],[3,4],[5,6,7]]);",
""
],
"tail": [
""
],
"solutions": [
"function multiplyAll(arr) {",
" var product = 1;",
" for (var i = 0; i < arr.length; i++) {",
" for (var j = 0; j < arr[i].length; j++) {",
" product *= arr[i][j];",
" }",
" }",
" return product;",
"}",
"",
"multiplyAll([[1,2],[3,4],[5,6,7]]);",
"",
""
],
"type": "waypoint",
@ -4158,31 +4185,25 @@
"description": [
"You can run the same code multiple times by using a loop.",
"Another type of JavaScript loop is called a \"while loop\", because it runs \"while\" something is true and stops once that something is no longer true.",
"<code>var ourArray = [];</code>",
"<code>var i = 0;</code>",
"<code>while(i < 5) {</code>",
"<code>&nbsp;&nbsp;ourArray.push(i);</code>",
"<code>&nbsp;&nbsp;i++;</code>",
"<code>}</code>",
"<blockquote>var ourArray = [];<br />var i = 0;<br />while(i < 5) {<br /> ourArray.push(i);<br /> i++;<br />}</blockquote>",
"Let's try getting a while loop to work by pushing values to an array.",
"Push the numbers 0 through 4 to <code>myArray</code> using a <code>while</code> loop."
"<h4>Instructions</h4>Push the numbers 0 through 4 to <code>myArray</code> using a <code>while</code> loop."
],
"tests": [
"assert(editor.getValue().match(/while/g), 'message: You should be using a <code>while</code> loop for this.');",
"assert.deepEqual(myArray, [0,1,2,3,4], 'message: <code>myArray</code> should equal <code>[0,1,2,3,4]</code>.');"
],
"challengeSeed": [
"// Setup",
"var myArray = [];",
"",
"// Only change code below this line.",
"",
"",
"",
"// Only change code above this line.",
"",
"if(typeof(myArray) !== \"undefined\"){(function(){return myArray;})();}",
""
],
"tail": [
"if(typeof(myArray) !== \"undefined\"){(function(){return myArray;})();}"
],
"type": "waypoint",
"challengeType": "1"
},