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Converting JavaScript object with numeric keys into array
...(k) { return obj[k] });
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That's assuming it's already parsed as a javascript object, and isn't actually JSON, which is a string format, in that case a run through JSON.parse would be necessary as well.
In ES2015 there's Object.values to the rescue, which makes this a breeze
var arr = Obje...
How to create query parameters in Javascript?
...here any way to create the query parameters for doing a GET request in JavaScript?
11 Answers
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Is there any kind of hash code function in JavaScript?
... object of unique objects, a set. I had the brilliant idea of just using a JavaScript object with objects for the property names. Such as,
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How to list the properties of a JavaScript object?
... The for (var key in myObject) {...} technique is useful for javascript runtimes outside of browsers and V8. For example, when passing javascript map-reduce queries into Riak the Object object doesn't exist, so the Object.keys method isn't available.
– ekillaby
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How can I add a class to a DOM element in JavaScript?
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There is also the DOM way of doing this in JavaScript:
// Create a div and set class
var new_row = document.createElement("div");
new_row.setAttribute("class", "aClassName");
// Add some text
new_row.appendChild(document.createTextNode("Some text"));
// Add it to the...
Angular.js: How does $eval work and why is it different from vanilla eval?
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$eval and $parse don't evaluate JavaScript; they evaluate AngularJS expressions. The linked documentation explains the differences between expressions and JavaScript.
Q: What exactly is $eval doing? Why does it need its own mini parsing language?
From the...
How can I check if a var is a string in JavaScript?
How can I check if a var is a string in JavaScript?
7 Answers
7
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Big O of JavaScript arrays
Arrays in JavaScript are very easy to modify by adding and removing items. It somewhat masks the fact that most languages arrays are fixed-size, and require complex operations to resize. It seems that JavaScript makes it easy to write poorly performing array code. This leads to the question:
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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Iterate over a Javascript associative array in sorted order
Let's say I have a Javascript associative array (a.k.a. hash, a.k.a. dictionary):
10 Answers
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