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How to generate random SHA1 hash to use as ID in node.js?
... really meaningful for us to shasum our random bytes. It's like rolling a die twice but only accepting the second roll; no matter what, you have 6 possible outcomes each roll, so the first roll is sufficient.
Why is this better?
To understand why this is better, we first have to understand how h...
How may I reference the script tag that loaded the currently-executing script?
...ipts inserted dynamically
Problems
Will not work in older browsers and IE.
Does not work with modules <script type="module">
2. Select script by id
Giving the script an id attribute will let you easily select it by id from within using document.getElementById().
<script id="myscrip...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
...a JavaScript array to see if there are any duplicate values. What's the easiest way to do this? I just need to find what the duplicated values are - I don't actually need their indexes or how many times they are duplicated.
...
Check if a string is a date value
...
I tried a fiddle with both of the 'caution' cases above: console.log(Date.parse("2013-02-31")); console.log(Date.parse("4.3")); and in both cases (on firefox) it returned NaN, so for me, Date.parse seems OK (I'm prevalidating for...
How to center an element horizontally and vertically
...red Oct 19 '13 at 2:07
Josh CrozierJosh Crozier
188k4747 gold badges329329 silver badges261261 bronze badges
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Javascript seconds to minutes and seconds
...ction accepts either a Number (preferred) or a String (2 conversion 'penalties' which you can halve by prepending + in the function call's argument for s as in: fmtMSS(+strSeconds)), representing positive integer seconds s as argument.
Examples:
fmtMSS( 0 ); // 0:00
fmtMSS( '8'); // 0:0...
Relational table naming convention [closed]
...by Record IDs which are implemented in an SQL database container for convenience):
the tables are the Subjects of the database, thus they are nouns, again, singular
the relationships between the tables are the Actions that take place between the nouns, thus they are verbs (i.e they are not arbitra...
Can Selenium interact with an existing browser session?
...ct through a browser that is already running before launching a Selenium Client?
11 Answers
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How do I loop through or enumerate a JavaScript object?
...of instead of for-in, if not used it will return undefined on named properties, and Object.keys() ensures the use of only the object's own properties without the whole prototype-chain properties
Using the new Object.entries() method:
Note: This method is not supported natively by Internet Explorer...
What is the difference between POST and GET? [duplicate]
...HP/AJAX/jQuery and it seems to me that an important part of these technologies is that of POST and GET .
7 Answers
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