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- javascript - Get the last item in an array - Stack Overflow
var linkElement = document getElementById("BackButton"); var loc_array = document location href split(' '); var newT = document createTextNode(unescape(capWords(loc_array[loc_array length-2]))); linkElement appendChild(newT); Currently it takes the second to last item in the array from the URL However, I want to do a check for the last item in the array to be "index html" and if so, grab the
- Which equals operator (== vs ===) should be used in JavaScript . . .
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype value
- What does the !! (double exclamation mark) operator do in JavaScript . . .
Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact === or !== operators and also the hidden cast operation that is happening behind the scenes and I show it in the example I provide
- Using async await with a forEach loop - Stack Overflow
Are there any issues with using async await in a forEach loop? I'm trying to loop through an array of files and await on the contents of each file
- javascript - What is the difference between let and var? - Stack . . .
If you're writing server-side JavaScript code (Node js), you can safely use the let statement If you're writing client-side JavaScript code and use a browser based transpiler (like Traceur or babel-standalone), you can safely use the let statement, however your code is likely to be anything but optimal with respect to performance
- What is the correct way to check for string equality in JavaScript . . .
In all other cases, you're safe to use == Not only is it safe, but in many cases it simplifies your code in a way that improves readability I still recommend Crockford's talk for developers who don't want to invest the time to really understand Javascript—it's good advice for a developer who only occasionally works in Javascript
- How do I remove a property from a JavaScript object?
To remove a property from an object (mutating the object), you can do it by using the delete keyword, like this:
- JavaScript hide show element - Stack Overflow
Learn how to use JavaScript to hide or show elements on a webpage effectively
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