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2014/10/16 ¤W¤È 12:07:47
jquery Programming Glossary: scopeParallel asynchronous Ajax requests using jQuery http://stackoverflow.com/questions/1060539/parallel-asynchronous-ajax-requests-using-jquery total requests var sum 0 Normal loops don't create a new scope 1 2 3 4 5 .each function var number this .getJSON values number..
Access outside variable in loop from Javascript closure http://stackoverflow.com/questions/1331769/access-outside-variable-in-loop-from-javascript-closure essentially a function that returns a function to quickly scope the variable differently. for var i in this.items var item.. item.id .click create an anonymous function that will scope item function item that returns our function return function.. it was called not stored in a var in the parent function's scope like was true in your example. .each this.items function i item..
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 do this http ' myEndpoint.json' .then function response scope.log.push msg 'Data Received ' And our view can look like this.. var elm compile ' a href hello when active Hello a ' scope location.path ' not matching' expect elm.hasClass 'active' .toBeFalsey.. directive .directive 'whenActive' function location return scope true link function scope element attrs scope. on ' routeChangeSuccess'..
How does this JavaScript/JQuery Syntax work: (function( window, undefined ) { })(window)? http://stackoverflow.com/questions/2716069/how-does-this-javascript-jquery-syntax-work-function-window-undefined name. When it's not found javascript goes through the next scope etc. until it filters through the global variables. So if the..
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean to tell the runtime to return the function to the parent scope once it's returned the function is executed using line 4 maybe..
http://stackoverflow.com/questions/337878/var-self-this methods as callbacks for event handlers changes the scope of this from My instance to Whatever just called the callback.. way to do it It looks strange to me. javascript jquery scope closures share improve this question This question is not.. because this is a pseudo variable that may change from scope to scope dynamically we want to use this variable in embedded..
JavaScript asynchronous return value / assignment with jQuery [duplicate] http://stackoverflow.com/questions/7779697/javascript-asynchronous-return-value-assignment-with-jquery to point out that your var returnValue was in the wrong scope anyway. It needed to be declared in the outer scope of the trackPage.. wrong scope anyway. It needed to be declared in the outer scope of the trackPage function. Even with this fix the concept still..
Parallel asynchronous Ajax requests using jQuery http://stackoverflow.com/questions/1060539/parallel-asynchronous-ajax-requests-using-jquery any specific number of parallel queries var done 4 number of total requests var sum 0 Normal loops don't create a new scope 1 2 3 4 5 .each function var number this .getJSON values number function data sum data.value done 1 if done 0 #mynode .html..
Access outside variable in loop from Javascript closure http://stackoverflow.com/questions/1331769/access-outside-variable-in-loop-from-javascript-closure it held is used. You can use a technique called a closure essentially a function that returns a function to quickly scope the variable differently. for var i in this.items var item this.items i #showcasenav .append li id showcasebutton_ item.id.. img src images showcase icon item.id .png li #showcasebutton_ item.id .click create an anonymous function that will scope item function item that returns our function return function alert item.id self.switchto item.id item immediately.. because item is already the parameter of the function when it was called not stored in a var in the parent function's scope like was true in your example. .each this.items function i item #showcasenav .append li id showcasebutton_ item.id img src..
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 a little messy and a trifle frail. But in AngularJS we can do this http ' myEndpoint.json' .then function response scope.log.push msg 'Data Received ' And our view can look like this ul class messages li ng repeat entry in log entry.msg li ul.. it 'should add active when the route changes' inject function var elm compile ' a href hello when active Hello a ' scope location.path ' not matching' expect elm.hasClass 'active' .toBeFalsey location.path ' hello' expect elm.hasClass 'active'.. our test and confirm that it fails. So now we can write our directive .directive 'whenActive' function location return scope true link function scope element attrs scope. on ' routeChangeSuccess' function if location.path element.attr 'href' ..
How does this JavaScript/JQuery Syntax work: (function( window, undefined ) { })(window)? http://stackoverflow.com/questions/2716069/how-does-this-javascript-jquery-syntax-work-function-window-undefined through the local variables until it finds the variable name. When it's not found javascript goes through the next scope etc. until it filters through the global variables. So if the window variable is made local javascript can look it up quicker...
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean 3. 4. Line 2 is a plain function wrapped in parenthesis to tell the runtime to return the function to the parent scope once it's returned the function is executed using line 4 maybe reading through these steps will help 1. function .. 2. 1..
http://stackoverflow.com/questions/337878/var-self-this self this Using instance methods as callbacks for event handlers changes the scope of this from My instance to Whatever just called the callback . So my code looks like this function MyObject this.doSomething.. would not work here It works but is that the best way to do it It looks strange to me. javascript jquery scope closures share improve this question This question is not specific to jQuery but specific to JavaScript in general... relies on using a closure. But it doesn't work with this because this is a pseudo variable that may change from scope to scope dynamically we want to use this variable in embedded functions function xyz this is different here console.log..
JavaScript asynchronous return value / assignment with jQuery [duplicate] http://stackoverflow.com/questions/7779697/javascript-asynchronous-return-value-assignment-with-jquery make your own logic return promises. As a side note I'd like to point out that your var returnValue was in the wrong scope anyway. It needed to be declared in the outer scope of the trackPage function. Even with this fix the concept still doesn't..
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