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javascript Programming Glossary: useAccess / process (nested) objects, arrays or JSON http://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json Keys in arrays must be numeric whereas any string can be used as key in objects. The key value pairs are also called the.. value is an array to access its second element we have to use bracket notation data.items 1 This value is an object and we.. notation data.items 1 This value is an object and we use dot notation again to access the name property. So we eventually..
event.preventDefault() vs. return false http://stackoverflow.com/questions/1357118/event-preventdefault-vs-return-false from executing after a certain event is fired I can use one of two techniques. I'll use jQuery in the examples but this.. event is fired I can use one of two techniques. I'll use jQuery in the examples but this applies to plain JS as well.. are some reasons why I should avoid doing it like this and use preventDefault instead What's the better way javascript jquery..
How can I obfuscate JavaScript? http://stackoverflow.com/questions/194397/how-can-i-obfuscate-javascript enhanced and maintained by the Yahoo UI team. You may also use Google Closure Compiler UglifyJS Private String Data Keeping.. of security through obscurity . Most of the time it's your user who is viewing the source and the string values on the client.. and the string values on the client are intended for their use so that sort of private string value isn't often necessary...
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 it matter which equals operator vs I use in JavaScript comparisons I'm using JSLint to go through some.. if not thousands of these comparison operators being used throughout the file. Would I be correct in assuming that if.. lack of transitivity is alarming. My advice is to never use the evil twins. Instead always use and . All of the comparisons..
How to parse JSON in JavaScript http://stackoverflow.com/questions/4935632/how-to-parse-json-in-javascript JSON JSON.parse json .parseJSON json This will ensure you use native JSON.parse immediately rather than having jQuery perform..
Why is using “for…in” with array iteration such a bad idea? http://stackoverflow.com/questions/500504/why-is-using-for-in-with-array-iteration-such-a-bad-idea array iteration such a bad idea I've been told not to use for...in with arrays in JavaScript. Why not javascript arrays..
http://stackoverflow.com/questions/5874652/prop-vs-attr .click function instead of this.getAttribute 'style' do i use this .prop 'style' or this .attr 'style' or in this case do.. to prefer attr . Original answer If you've only ever used jQuery and not the DOM directly this could be a confusing change.. than attr . In the majority of cases prop does what attr used to do. Replacing calls to attr with prop in your code will..
Why is document.write considered a “bad practice”? http://stackoverflow.com/questions/802854/why-is-document-write-considered-a-bad-practice to submit to a 3rd party vendor as to why they shouldn't use document.write in implementations of their analytics code. Please.. create bugs .innerHTML has the same problem Far better to use the safe and DOM friendly DOM manipulation methods share improve..
How can I get query string values in JavaScript? http://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript question You don't need jQuery for that purpose. You can use vanilla JavaScript function getParameterByName name name name.replace..
How to create a GUID / UUID in Javascript? http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript
Href attribute for JavaScript links: “#” or “javascript:void(0)”? http://stackoverflow.com/questions/134845/href-attribute-for-javascript-links-or-javascriptvoid0 choice but if you work as a team you have to either state Use href # make sure onclick always contains return false at the.. that as well as not throwing an error it returns false. OR Use href javascript void 0 The second is clearly much easier to..
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 jQuery First make sure that jQuery is loaded properly. Use the browser's developer tools to find out whether the jQuery..
jQuery Mobile: document ready vs page events http://stackoverflow.com/questions/14468659/jquery-mobile-document-ready-vs-page-events example http jsfiddle.net Gajotres K8YmG Solution 3 Use a jQuery Filter selector like this '#carousel div Event click.. some versions of iOS 5.X. It is a well know error. Don ™t Use .live .bind .delegate I forgot to mention and tnx andleer for..
Accessing the web page's HTTP Headers in JavaScript http://stackoverflow.com/questions/220231/accessing-the-web-pages-http-headers-in-javascript http http headers share improve this question Use following javascript code to get all the HTTP headers. var req..
When to Use Double or Single Quotes in JavaScript http://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript to Use Double or Single Quotes in JavaScript console.log double vs..
Detecting an undefined object property in JavaScript http://stackoverflow.com/questions/27509/detecting-an-undefined-object-property-in-javascript javascript undefined share improve this question Use if typeof something undefined alert something is undefined ..
Elements order in a “for (??in ??” loop http://stackoverflow.com/questions/280713/elements-order-in-a-for-in-loop any time. Do not rely on things staying this way. In short Use an array if order is important to you. share improve this answer..
Loop through array in JavaScript http://stackoverflow.com/questions/3010840/loop-through-array-in-javascript javascript arrays for loop share improve this question Use a sequential for loop var myStringArray Hello World for var..
Use of 'prototype' vs. 'this' in Javascript? http://stackoverflow.com/questions/310870/use-of-prototype-vs-this-in-javascript of 'prototype' vs. 'this' in Javascript What's the difference..
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 to Darin for his help with this. THE ABOVE CODE IS WRONG. Use this instead .ready function var url 'http www.panoramio.com..
Is JavaScript 's “new” Keyword Considered Harmful? [closed] http://stackoverflow.com/questions/383402/is-javascript-s-new-keyword-considered-harmful one man's opinion. It can be a bit frustrating at times. Use of the functionality provided by the new keyword has several..
How do I check a checkbox with jQuery? http://stackoverflow.com/questions/426258/how-do-i-check-a-checkbox-with-jquery share improve this question It certainly is in jQuery 1.6 Use the new .prop function '.myCheckbox' .prop 'checked' true '.myCheckbox'..
Best practice: escape, or encodeURI / encodeURIComponent http://stackoverflow.com/questions/75980/best-practice-escape-or-encodeuri-encodeuricomponent server what is the best practice to use from javascript Use escape escape OR use encodeURI encodeURIComponent encodeURI.. as it has been deprecated since ECMAScript v3. encodeURI Use encodeURI when you want a working URL. Make this call encodeURI.. 2Fa 20file 20with 20spaces.html encodeURIComponent Use encodeURIComponent when you want to encode a URL parameter...
$(document).ready equivalent without jQuery http://stackoverflow.com/questions/799981/document-ready-equivalent-without-jquery currently support this event if document.addEventListener Use the handy event callback document.addEventListener DOMContentLoaded..
What is JavaScript garbage collection? http://stackoverflow.com/questions/864516/what-is-javascript-garbage-collection guidelines on the matter. Two important ones from there Use delete statements. Whenever you create an object using a new.. delete statement is discussed more in śFreeing Objects. li Use the var keyword. Any variable created without the var keyword..
Plain Javascript bidirectional Data binding http://stackoverflow.com/questions/11904039/plain-javascript-bidirectional-data-binding and i am not going to write my framework. So any USE FRAMEWORK X is completely useless as i could get the job done..
Watch for object properties changes in JavaScript [duplicate] http://stackoverflow.com/questions/1269633/watch-for-object-properties-changes-in-javascript support. Public Domain. NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. object.watch if Object.prototype.watch Object.prototype.watch..
http://stackoverflow.com/questions/12973706/javascript-collection function var x 10 2 var y 5 return new Size 10 5 The point USE CLASSES WHEREVER APPROPRIATE Why Example 1 is 93 Slower . Look..
http://stackoverflow.com/questions/15422494/innerhtml-how-to-avoid Public domain. NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. @source https gist.github.com 1129031 global..
Scroll smoothly to specific element on page http://stackoverflow.com/questions/17722497/scroll-smoothly-to-specific-element-on-page FROM OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. var EPPZScrollTo Helpers...
http://stackoverflow.com/questions/18043125/plugin-illuminate-0-7-incompatible-to-jquery-1-9-1-or-jquery-ui-1-10-3-typeer color of an element and illuminates the element. TERMS OF USE jQuery Illuminate Open source under the BSD License. Currently.. TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND.. OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY..
how do I access XHR responseBody (for binary data) from Javascript in IE? http://stackoverflow.com/questions/1919972/how-do-i-access-xhr-responsebody-for-binary-data-from-javascript-in-ie from Javascript. See jsdap for one example. EDIT DO NOT USE THIS VBScript var IE_HACK msie i.test navigator.userAgent opera..
Hide select option in IE using jQuery http://stackoverflow.com/questions/2031740/hide-select-option-in-ie-using-jquery prettified. http fiddle.jshell.net FAkEK 12 show EDIT #2 USE THIS INSTEAD It occurred to me that instead of doing all this..
Javascript check Mouse clicked inside the Circle or Polygon http://stackoverflow.com/questions/2212604/javascript-check-mouse-clicked-inside-the-circle-or-polygon FROM OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. function pnpoly nvert vertx..
May function declarations appear inside statements in JavaScript? http://stackoverflow.com/questions/4071292/may-function-declarations-appear-inside-statements-in-javascript Nonstandard syntax found in GMail source code. DO NOT USE. try FunctionDeclaration not allowed in Block. function Fze..
How to remove the “Dotted Border” on clicking? http://stackoverflow.com/questions/4374622/how-to-remove-the-dotted-border-on-clicking is the current status of my CSS ansd HTML but still no USE .myButton input position absolute display block top 5 left 87..
Can't Deserialize GoogleMaps DirectionsResult Object http://stackoverflow.com/questions/4556602/cant-deserialize-googlemaps-directionsresult-object var str Ext.encode response SAVING RAW JSON OBJECT TO DB I USE ExtJs var z eval ' ' str ' ' REHYDRATING DirectionsResult RAW..
http://stackoverflow.com/questions/6258521/clear-icon-inside-input-text 10px center border 1px solid #999 padding 3px 18px 3px 4px USE the same right padding in jQ border radius 3px transition background..
Open an url in a new tab when click a button http://stackoverflow.com/questions/6303964/open-an-url-in-a-new-tab-when-click-a-button f8zqg 1 javascript share improve this question USE this code function openBackWindow url popName var popupWindow..
what is the solution to remove/add a class in pure javascript? http://stackoverflow.com/questions/6787383/what-is-the-solution-to-remove-add-a-class-in-pure-javascript Public Domain. NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. global self document DOMException @source..
JavaScript DOMParser access innerHTML and other properties http://stackoverflow.com/questions/9250545/javascript-domparser-access-innerhtml-and-other-properties Public domain. NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. @source https gist.github.com 1129031 global..
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