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2014/10/16 ¤W¤È 12:06:02
jquery Programming Glossary: operatorWhat does !function ($) { $(function(){ }) }(window.jQuery) do? http://stackoverflow.com/questions/10896749/what-does-function-function-window-jquery-do becomes the single operand of the unary logical NOT operator. This forces the function to be evaluated as an expression which..
http://stackoverflow.com/questions/1442925/how-to-get-nth-jquery-element browse the short selectors page first Here it is the eq operator. It is used just like get but it returns the jQuery object...
whether a variable is undefined [duplicate] http://stackoverflow.com/questions/1485840/whether-a-variable-is-undefined
Check if object is a jQuery object http://stackoverflow.com/questions/1853223/check-if-object-is-a-jquery-object share improve this question You can use the instanceof operator obj instanceof jQuery Explanation the jQuery function aka is..
does javascript have a built in stringbuilder class? http://stackoverflow.com/questions/2087522/does-javascript-have-a-built-in-stringbuilder-class which uses array joins. Concatenating strings with the or operator are extremely slow on IE. This is especially true for IE6. On..
jquery parse json multidimensional array http://stackoverflow.com/questions/2487841/jquery-parse-json-multidimensional-array property values are accessible by the key using the period operator like so json.forum . The in JSON represents an array. The array..
How to determine if variable is 'undefined' or 'null' http://stackoverflow.com/questions/2647867/how-to-determine-if-variable-is-undefined-or-null 'undefined' your code here. Using strict equality operator above is good idea there because in JS you can name a variable.. variable_here your code here. See more info about typeof operator. Update Beware that typeof null returns object typeof null 'object'..
http://stackoverflow.com/questions/2891452/jquery-data-selector Madonna ' Lastly it would be great if comparison operators and regex features were available on data selectors. So a artist.id.. music artist.name Madonna ' The pattern is data namespace operator check operator and check are optional. So if you only have data.. Madonna ' The pattern is data namespace operator check operator and check are optional. So if you only have data a.b.c it will..
http://stackoverflow.com/questions/3005606/jquery-json-parsing contains an array . You can access properties using dot . operator. You can get an array item at the given index using index where.. access properties starting with a number using dot . operator you would then like to use the brace notation var zero firstDayEvent..
JQuery: How to select rows from a table http://stackoverflow.com/questions/3585272/jquery-how-to-select-rows-from-a-table this in a single line. I can't seem to figure out AND operator logic with selectors Awaiting jquery jquery selectors share..
http://stackoverflow.com/questions/4083351/what-does-jquery-fn-mean foo function arg core constructor ensure to use the `new` operator if this instanceof foo return new foo arg store an argument..
How do I use jQuery's form.serialize but exclude empty fields http://stackoverflow.com/questions/608730/how-do-i-use-jquerys-form-serialize-but-exclude-empty-fields needed between #myForm and input as it is the descendant operator. input matches all input textarea select and button elements...
Jquery: Checking to see if div contains text, then action http://stackoverflow.com/questions/902597/jquery-checking-to-see-if-div-contains-text-then-action question Your code contains two problems The equality operator in JavaScript is not . jQuery.text joins all text nodes of matched..
What does tilde (~) preceding jQuery object do? http://stackoverflow.com/questions/9316612/what-does-tilde-preceding-jquery-object-do What I don't understand is what is the use of the tilde ~ operator in all of this var arr one two three if jQuery.inArray one arr.. jquery tilde share improve this question The tilde operator isn't actually part of jQuery at all it's a bitwise NOT operator.. isn't actually part of jQuery at all it's a bitwise NOT operator in Javascript itself. http www.joezimjs.com javascript great..
What does !function ($) { $(function(){ }) }(window.jQuery) do? http://stackoverflow.com/questions/10896749/what-does-function-function-window-jquery-do the lines from the above answer link. When you use the function becomes the single operand of the unary logical NOT operator. This forces the function to be evaluated as an expression which allows it to be invoked immediately inline. and this solves..
http://stackoverflow.com/questions/1442925/how-to-get-nth-jquery-element
whether a variable is undefined [duplicate] http://stackoverflow.com/questions/1485840/whether-a-variable-is-undefined
Check if object is a jQuery object http://stackoverflow.com/questions/1853223/check-if-object-is-a-jquery-object in the line of typeof obj 'jquery' javascript jquery share improve this question You can use the instanceof operator obj instanceof jQuery Explanation the jQuery function aka is implemented as a constructor function . Constructor functions..
does javascript have a built in stringbuilder class? http://stackoverflow.com/questions/2087522/does-javascript-have-a-built-in-stringbuilder-class for Internet Explorer make sure you chose an implementation which uses array joins. Concatenating strings with the or operator are extremely slow on IE. This is especially true for IE6. On modern browsers is usually just as fast as array joins. When..
jquery parse json multidimensional array http://stackoverflow.com/questions/2487841/jquery-parse-json-multidimensional-array is represented by key value and comma separated. The property values are accessible by the key using the period operator like so json.forum . The in JSON represents an array. The array values can be any object and the values are comma separated...
How to determine if variable is 'undefined' or 'null' http://stackoverflow.com/questions/2647867/how-to-determine-if-variable-is-undefined-or-null improve this question You can do like this if typeof variable_here 'undefined' your code here. Using strict equality operator above is good idea there because in JS you can name a variable as undefined too var undefined something So using makes sure.. against undefined value for a variable. You can also do if variable_here your code here. See more info about typeof operator. Update Beware that typeof null returns object typeof null 'object' true You may also want to check out Fixing the JavaScript..
http://stackoverflow.com/questions/2891452/jquery-data-selector name Madonna 'a' .data category music 'a category music artist.name Madonna ' Lastly it would be great if comparison operators and regex features were available on data selectors. So a artist.id 5000 would be possible. I realize I could probably.. nested querying and AND conditions. Usage 'a data category music artist.name Madonna ' The pattern is data namespace operator check operator and check are optional. So if you only have data a.b.c it will simply check for the truthiness of a.b.c ... and AND conditions. Usage 'a data category music artist.name Madonna ' The pattern is data namespace operator check operator and check are optional. So if you only have data a.b.c it will simply check for the truthiness of a.b.c . You can see the..
http://stackoverflow.com/questions/3005606/jquery-json-parsing This JSON contains one property the DayEvents which in turn contains an array . You can access properties using dot . operator. You can get an array item at the given index using index where zero 0 denotes the first item. var json DayEvents 0 886.. has several properties 0 event_id 1 user_id 2 etc. You cannot access properties starting with a number using dot . operator you would then like to use the brace notation var zero firstDayEvent '0' var eventId firstDayEvent.event_id var one firstDayEvent..
JQuery: How to select rows from a table http://stackoverflow.com/questions/3585272/jquery-how-to-select-rows-from-a-table row and check. This is verbose. Is there a better way to achieve this in a single line. I can't seem to figure out AND operator logic with selectors Awaiting jquery jquery selectors share improve this question tr .each function index if .trim..
http://stackoverflow.com/questions/4083351/what-does-jquery-fn-mean that resembles the architecture of jQuery function var foo function arg core constructor ensure to use the `new` operator if this instanceof foo return new foo arg store an argument for this example this.myArg arg .. create `fn` alias to `prototype`..
How do I use jQuery's form.serialize but exclude empty fields http://stackoverflow.com/questions/608730/how-do-i-use-jquerys-form-serialize-but-exclude-empty-fields less obvious to me at first was that the space character is needed between #myForm and input as it is the descendant operator. input matches all input textarea select and button elements. value '' is an attribute not equal filter. The weird and helpful..
Jquery: Checking to see if div contains text, then action http://stackoverflow.com/questions/902597/jquery-checking-to-see-if-div-contains-text-then-action id somediv div Is this incorrect jquery share improve this question Your code contains two problems The equality operator in JavaScript is not . jQuery.text joins all text nodes of matched elements into a single string. If you have two successive..
What does tilde (~) preceding jQuery object do? http://stackoverflow.com/questions/9316612/what-does-tilde-preceding-jquery-object-do convert the result to type boolean with the value of true. What I don't understand is what is the use of the tilde ~ operator in all of this var arr one two three if jQuery.inArray one arr 1 alert Found Refactoring the if statement if ~jQuery.inArray.. please explain it or point me towards a resource javascript jquery tilde share improve this question The tilde operator isn't actually part of jQuery at all it's a bitwise NOT operator in Javascript itself. http www.joezimjs.com javascript.. tilde share improve this question The tilde operator isn't actually part of jQuery at all it's a bitwise NOT operator in Javascript itself. http www.joezimjs.com javascript great mystery of the tilde You are getting strange numbers in your..
Jquery datepicker popup not closing on select date in IE8 http://stackoverflow.com/questions/1704398/jquery-datepicker-popup-not-closing-on-select-date-in-ie8 txtStartDate ErrorMessage Date must be in the format MM DD YYYY Text Display Dynamic ValidationGroup sh Operator DataTypeCheck Type Date asp CompareValidator asp TextBox ID txtStartDate runat server asp TextBox span class formMessage..
a simple question on jquery closure http://stackoverflow.com/questions/2024888/a-simple-question-on-jquery-closure between parenthesis ensures this function to be evaluated as a function expression . That happens because the Grouping Operator the parentheses can only evaluate expressions . If no parenthesis are used it will be interpreted as a function declaration..
How do I prevent my jQuery Gallery from overlapping? http://stackoverflow.com/questions/5833799/how-do-i-prevent-my-jquery-gallery-from-overlapping 'href' '#' popID .fadeIn 'slow' .css 'width' Number popWidth .prepend script head body div id Wrapper div id PLC Operator Interface class popup_block_Parts h3 PLC Operator Interface h3 p Flameless Catalytic heating which has brought energy.. popWidth .prepend script head body div id Wrapper div id PLC Operator Interface class popup_block_Parts h3 PLC Operator Interface h3 p Flameless Catalytic heating which has brought energy cost savings to numerous thermo formers and paint finishers.. Vulcan GasPulse_sm.gif alt Gas Booster Approvals div div div class sliderGallery ul li a href # w 400 rel PLC Operator Interface class Product img src Parts_by_Man_OK_By_Jon Vulcan thumbnails plc operator interface 2_Thumbnail.gif border 0..
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