I just read this question: are there dictionaries in javascript like python?  One of the answers said that you can use JavaScript objects like Python dictionaries. Is that true? What is the performance of a key lookup in an object? Is it O(1)? Is a...
How to write functionToGenerateMD5hash for this code? I already have fileVideo and I need to send the corresponding md5 hash to the server by clicking on the button.  $("#someButton").click(function() { var fr = new FileReader();       fr.o...
Basically, I'm trying to create an 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,  set[obj] = true;   This works, up to a point. It works great with string...
Is there is a way how to add hash # to my URL without redirect?...
Yes, I know you could use regular objects as associative arrays in JavaScript, but I'd like to use something closer to java's Map's implementation (HashMap, LinkedHashMap etc). Something that could have any kind of data used as key. Are t...
Gmail seems to have some clever way of handling the back/forward buttons in a rich JS application.  In my organisation we trialled the jQuery history plugin. The plugin basically runs a function every 100ms which parses the URL and tests if it has ch...
What's the big O for JavaScript's array access when used as a hash?  For example,  var x= []; for(var i=0; i<100000; i++){    x[i.toString()+'a'] = 123; // using string to illustrate x[alpha] } alert(x['9999a']); // linear...
I find myself needing to generate a checksum for a string of data, for consistency purposes.  The broad idea is that the client can regenerate the checksum based on the payload it recieves and thus detect any corruption that took place in transit.  I...
I know there is a Hash() object in the Javascript prototype framework, but is there anything in Jquery like this?  As I would like to stick with one javascript framework, rather than mixing the Prototype Frame work and the JQuery framework and use at...
I'm not talking about server-side node.js.  I want to use a slow hashing algorithm for a key on the client-side of my site. I have found implementations of SHA-256 which seem to be reliable. I also found this question which lead to the OP creatin...

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