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javascript Programming Glossary: someobject“undefined” randomly appended in 1% of requested urls on my website since 12 june 2012 http://stackoverflow.com/questions/11017609/undefined-randomly-appended-in-1-of-requested-urls-on-my-website-since-12-jun that is similar to the following var url workingUrl someObject 'someProperty' var url workingUrl someObject.someProperty Keep.. workingUrl someObject 'someProperty' var url workingUrl someObject.someProperty Keep in mind that someObject might be an object.. url workingUrl someObject.someProperty Keep in mind that someObject might be an object an array or any of the internal browser types...
What are the differences between these three patterns of “class” definitions in JavaScript? http://stackoverflow.com/questions/13789559/what-are-the-differences-between-these-three-patterns-of-class-definitions-in verbose to simply write var createSomething Object.create someObject getCreated function console.log this.myProperty myProperty new..
Difference between using var and not using var in JavaScript http://stackoverflow.com/questions/1470488/difference-between-using-var-and-not-using-var-in-javascript var someNumber 2 var someFunction function doSomething var someObject var someObject.someProperty 5 and someNumber 2 someFunction.. 2 var someFunction function doSomething var someObject var someObject.someProperty 5 and someNumber 2 someFunction function doSomething.. 5 and someNumber 2 someFunction function doSomething someObject someObject.someProperty 5 When would you use either one and..
What is the 'new' keyword in JavaScript? http://stackoverflow.com/questions/1646698/what-is-the-new-keyword-in-javascript etc. . It can only be read with Object.getPrototypeOf someObject . There is no other way to set or read this value. Functions..
Does JavaScript have the interface type (such as Java's 'interface')? http://stackoverflow.com/questions/3710275/does-javascript-have-the-interface-type-such-as-javas-interface method before trying to use it. Something like if typeof someObject.quack function This thing can quack So you can check for all.. methodName return typeof this methodName function if someObject.can quack someObject.quack This is standard JavaScript so it.. typeof this methodName function if someObject.can quack someObject.quack This is standard JavaScript so it should work in any JS..
Check that value is object literal? http://stackoverflow.com/questions/4320767/check-that-value-is-object-literal should do it for you if Object.prototype.toString.call someObject ' object Object ' do your iteration From ECMAScript 5 Section..
Check if object member exists in nested object http://stackoverflow.com/questions/4676223/check-if-object-member-exists-in-nested-object of a single member More concisely How can I check if someObject.member.member.member.value exists javascript object share.. in obj obj obj part else return false return true test someObject 'member.member.member.value' DEMO share improve this answer..
How do I dynamically call a JavaScript object's method http://stackoverflow.com/questions/5112793/how-do-i-dynamically-call-a-javascript-objects-method The reasons why are too long for this post. var myObj new someObject var funcName hide function callObject myObj funcName obj.hide..
Javascript use variable as object name http://stackoverflow.com/questions/6084858/javascript-use-variable-as-object-name share improve this question Global var objname var someObject objname window someObject .value value Local Local variables.. Global var objname var someObject objname window someObject .value value Local Local variables are a little more challenging.. arguments.callee return false this.objname var someObject objname this someObject .value value console.log this.objname..
Why is array.push sometimes faster than array[n] = value? http://stackoverflow.com/questions/614126/why-is-array-push-sometimes-faster-than-arrayn-value engines tend to specialise on integer lookups as well so someObject someInteger will not convert the integer to a string if you're..
Accessing nested JavaScript objects with string key http://stackoverflow.com/questions/6491463/accessing-nested-javascript-objects-with-string-key with string key I have a data structure like this var someObject 'part1' 'name' 'Part 1' 'size' '20' 'qty' '50' 'part2' 'name'.. part3name1 part3 0 .name part1name should be filled with someObject.part1.name 's value which is Part 1 . Same thing with part2quantity..
JavaScript Prototype explanation needed http://stackoverflow.com/questions/7160310/javascript-prototype-explanation-needed Turned into a prototype would look something like var someObject function this.a somevalue someObject.prototype.func1 function.. something like var someObject function this.a somevalue someObject.prototype.func1 function work someObject.prototype.func2 function.. this.a somevalue someObject.prototype.func1 function work someObject.prototype.func2 function work var myObject new someObject What..
How to get class object's name as a string in Javascript? http://stackoverflow.com/questions/789675/how-to-get-class-objects-name-as-a-string-in-javascript an object in Javascript like this var myObj new someObject Now is it possible to obtain the var object's name as string..
Accessing global object from content script in chrome extension http://stackoverflow.com/questions/10052259/accessing-global-object-from-content-script-in-chrome-extension .js file. For example file1.js contains the global object SomeObject. This file gets loaded in background.html. Since file1.js is.. null file contentscript.js api. How can I access SomeObject in the contentscript in this case javascript html google chrome..
Javascript type of custom object http://stackoverflow.com/questions/1486300/javascript-type-of-custom-object I check if my javascript object is of a certain type. var SomeObject function var s1 new SomeObject In the case above typeof s1 will.. is of a certain type. var SomeObject function var s1 new SomeObject In the case above typeof s1 will return object . That's not.. very helpful. Is there some way to check if s1 is of type SomeObject javascript share improve this question Yes using instanceof..
adding prototype to object literal http://stackoverflow.com/questions/1592384/adding-prototype-to-object-literal function with the new operator for example function SomeObject a constructor function SomeObject.prototype.someMethod function.. for example function SomeObject a constructor function SomeObject.prototype.someMethod function var obj new SomeObject All the.. SomeObject.prototype.someMethod function var obj new SomeObject All the instances of SomeObject will inherit the members from..
What is the difference between var thing and function thing() in JavaScript? http://stackoverflow.com/questions/1704618/what-is-the-difference-between-var-thing-and-function-thing-in-javascript the following example of private class members Code var SomeObject function var privateMember I am a private member this.publicMember.. console.log privateMember this.publicMember var o new SomeObject console.log typeof o.privateMember typeof o.publicMember o.publicMethod.. that we are working within in this case the instance of SomeObject . Consider the following example Code var SomeObject function..
ExtJS (JavaScript) Module Design Pattern best practices http://stackoverflow.com/questions/9104387/extjs-javascript-module-design-pattern-best-practices 0 text 'Set NumberField to 0' privateInternalObject new SomeObject word hello world privateNumber 5 init return this I'm wondering..
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