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javascript Programming Glossary: thereAccess / process (nested) objects, arrays or JSON http://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json share improve this question Preliminaries In JavaScript there are only two actually one data types which can contain other.. One could also use for...in to iterate over arrays but there are reasons why this should be avoided Why is 'for var item.. arrays and objects is basic JavaScript knowledge and therefore it is advisable to read the MDN JavaScript Guide especially..
event.preventDefault() vs. return false http://stackoverflow.com/questions/1357118/event-preventdefault-vs-return-false 'a' .click function custom handling here return false Is there any significant difference between those two methods of stopping.. in callback to be able to call the method. Perhaps there are some reasons why I should avoid doing it like this and use..
jQuery Mobile: document ready vs page events http://stackoverflow.com/questions/14468659/jquery-mobile-document-ready-vs-page-events will trigger ONLY once just like document ready so there's no way events will be bound again. This is best solution because.. it's not listed currently . The pageload event could therefore be used to access the loaded page. In few words this is.. to the API in version 1.3. In a typical jQuery app there can be a lot of DOM manipulation and it can become very tedious..
Prototypical inheritance - writing up [duplicate] http://stackoverflow.com/questions/16063394/prototypical-inheritance-writing-up speedy and so it climbs up to the prototype and changes it there. That's why food.length is equal for both hamsters in other..
var functionName = function() {} vs function functionName() {} http://stackoverflow.com/questions/336859/var-functionname-function-vs-function-functionname two ways of declaring functions and I can't work out if there is a reason behind it or not. The two ways are var functionOne.. methods and what are the pros and cons of each Is there anything that can be done with one method that can't be done..
Does it matter which equals operator (== vs ===) I use in JavaScript comparisons? http://stackoverflow.com/questions/359494/does-it-matter-which-equals-operator-vs-i-use-in-javascript-comparisons 0 inside of an if statement. Is there a performance benefit to replacing with Any performance improvement.. Any performance improvement would probably be welcomed as there are hundreds if not thousands of these comparison operators.. correct in assuming that if no type conversion takes place there would be a small probably extremely small performance gain over..
http://stackoverflow.com/questions/476679/preloading-images-with-jquery But it looks a bit over the top for what I want I know there are jQuery plugins out there that do this but they all seem.. top for what I want I know there are jQuery plugins out there that do this but they all seem a bit big in size I just need..
How to parse JSON in JavaScript http://stackoverflow.com/questions/4935632/how-to-parse-json-in-javascript . As noted in the comments if you're already using jQuery there is a .parseJSON function that maps to JSON.parse if available..
Javascript closure inside loops - simple practical example http://stackoverflow.com/questions/750486/javascript-closure-inside-loops-simple-practical-example j 0 j 3 j funcs j and now let's run each one to see Since there is no block scope in JavaScript only function scope by wrapping..
How can I get query string values in JavaScript? http://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript can I get query string values in JavaScript Is there a plugin less way of retrieving query string values via jQuery.. string values via jQuery or without If so how If not is there a plugin which can do so javascript jquery url plugins query..
How to include a JavaScript file in another JavaScript file? http://stackoverflow.com/questions/950087/how-to-include-a-javascript-file-in-another-javascript-file include a JavaScript file in another JavaScript file Is there something similar to @import in CSS in JavaScript that allows.. isn't any import include or require in JavaScript but there are two main ways to achieve what you want 1 You can load it.. in JavaScript Madness Dynamic Script Loading . Now there is a big issue you must know about. Doing that implies that..
How to create a GUID / UUID in Javascript? http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript javascript guid uuid share improve this question There have been a couple attempts at this. The question is do you.. in the comments that such values are not genuine GUIDs. There's no way to generate real GUIDs in Javascript because they depend..
Why does jQuery or a DOM method such as `getElementById` not find the element? http://stackoverflow.com/questions/14028959/why-does-jquery-or-a-dom-method-such-as-getelementbyid-not-find-the-element other DOM method that selects elements. Possible Reasons There are two reasons why an element might not exist An element with..
jQuery Mobile: document ready vs page events http://stackoverflow.com/questions/14468659/jquery-mobile-document-ready-vs-page-events especially while creating a jQuery Mobile application. There's also another special jQuery Mobile event and it is called.. it by moving from page 1 to page 2 and back several times. There are few ways to prevent this problem Solution 1 Best solution.. vs on 34 everything will be clear from there. Benchmarking There's an excellent script made for jQuery Mobile page events benchmarking...
jQuery Mobile: Markup Enhancement of dynamically added content http://stackoverflow.com/questions/14550396/jquery-mobile-markup-enhancement-of-dynamically-added-content can also be found as a part of my blog HERE . Intro There are several ways of enhancing dynamically created content markup... etc. . With this in mind lets discuss enhancement levels. There are three of them and they are sorted from the less resource.. jsfiddle.net Gajotres 5rzxJ 3rd party enhancement plugins There are several 3rd party enhancement plugins. Some are made as..
How do I “think in AngularJS” if I have a jQuery background? http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background Angular Way . It still doesn't take any DOM manipulation There are lots of times when DOM manipulation is necessary but it's.. in your application ask yourself if you really need to. There might be a better way. Here's a quick example that shows the.. 'active' else element .addClass 'active' on on There are a few things wrong with this. First jQuery was never necessary...
Resizing an iframe based on content http://stackoverflow.com/questions/153152/resizing-an-iframe-based-on-content solution which you may be able to adapt to your needs. There is a way around the same origin policy but it requires changes.. sides this method won't be very useful to you i'm afraid. There's a browser quirk which allows us to skirt the same origin policy.. src of the iframe at this point to helper.html height N There's an explanation here of how facebook handle it which may be..
How to “properly” create a custom object in JavaScript? http://stackoverflow.com/questions/1595611/how-to-properly-create-a-custom-object-in-javascript Methods Thanks javascript share improve this question There are two models for implementing classes and instances in JavaScript.. now have an acceptable set of primitives to built classes. There are a few refinements and extensions we can consider under this.. x y z Shape.prototype._init.call this x y this.r r ... There are a lot of potential features you might consider desirable..
When is JavaScript's eval() not evil? http://stackoverflow.com/questions/197769/when-is-javascripts-eval-not-evil the point let's look at the dangers in the use of eval . There are probably many small hidden dangers just like everything..
How can you encode a string to Base64 in JavaScript? http://stackoverflow.com/questions/246801/how-can-you-encode-a-string-to-base64-in-javascript use something like the function Sunny referenced . There appears to be some confusion in the comments regarding what..
Use of 'prototype' vs. 'this' in Javascript? http://stackoverflow.com/questions/310870/use-of-prototype-vs-this-in-javascript What is the scope of a function in Javascript Sidenote There is not a real memory savings between the snippets in question...
XmlHttpRequest error: Origin null is not allowed by Access-Control-Allow-Origin http://stackoverflow.com/questions/3595515/xmlhttprequest-error-origin-null-is-not-allowed-by-access-control-allow-origin believe you mentioned you were running it from a file URL. There are two ways for CORS headers to signal that a cross domain..
How to include a JavaScript file in another JavaScript file? http://stackoverflow.com/questions/950087/how-to-include-a-javascript-file-in-another-javascript-file file import include share improve this question There isn't any import include or require in JavaScript but there.. url Then bind the event to the callback function. There are several events for cross browser compatibility. script.onreadystatechange..
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