StackOverflow2013

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plurals

PO
primarykey
Id
14169937
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
6
CommunityOwnedDate
CreationDate
2013-01-05T08:09:21.360
FavoriteCount
0
LastActivityDate
2013-01-05T09:31:34.227
LastEditDate
2013-01-05T09:31:34.227
LastEditorUserId
361684
OwnerUserId
361684
ParentId
14169914
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
Use <code>Math.floor()</code> instead of <code>.round()</code> and don't subtract 1 from the length: <pre><code>var randomnumber = Math.floor(Math.random() * imagesarray.length); </code></pre> Edit: <code>Math.random() * 3</code> will give us numbers between 0 (inclusive) and 3 (exclusive). Using <code>Math.round()</code> the values that result in each number: <pre><code>0: 0.0 — 0.4999 1: 0.5 — 1.4999 2: 1.5 — 2.4999 3: 2.5 — 2.9999 </code></pre> You can see that the high and low numbers each of half the probability of being selected as the numbers in the middle. This is because you will never get numbers in the range <code>-0.5 — -0.9999</code> or <code>3.0 — 3.4999</code> giving these end numbers half the likelihood of being selected. <code>Math.floor()</code> eliminates this problem because all the numbers fall within the range. <code>Math.random() * 4</code> will give us numbers between 0 (inclusive) and 4 (exclusive). Using <code>Math.floor()</code> the values that result in each number: <pre><code>0: 0.0 — 0.9999 1: 1.0 — 1.9999 2: 2.0 — 2.9999 3: 3.0 — 3.9999 </code></pre> You may find it useful to use a utility function such as this one: <pre><code>function randomInt(max, min) { min = min || 0; var Max = Math.max(max, min) + 1; var Min = Math.min(max, min); return Math.floor(Math.random() * (Max - Min)) + Min; } </code></pre> The nice thing about this function is that the order of the arguments doesn't matter, and <code>min</code> is optional. Note that, since <code>max</code> is inclusive in this function, you would want to subtract 1 from the array length: <pre><code>var randomnumber = randomInt(imagesarray.length - 1); </code></pre>
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1. This table or related slice is empty.
PostParentId
1. POShow different image on each page load
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USgilly3
UserOwnerUserId
1. USgilly3
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2. VO
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