Ken’s JavaScript, jQuery Notes
[Pages:20]20July12
Ken's Javascript, jQuery Notes
1
Ken's JavaScript, jQuery Notes
Quick refresher thru code snippets
Contents
Html .................................................................................................................................... 3 Setting HTML Form Fields via Javascript...................................................................... 3
Updating the Forms Webpage when Returning from Server.............................................. 3 A server side return wont trigger client side includes in IE8:......................................... 4 This client side scripting won't cause the page to refetch its includes (in IE8) either ... 4 What will work is returning to a specific URL from the server ..................................... 4
CSS Selectors...................................................................................................................... 5 Defining .......................................................................................................................... 5 File .............................................................................................................................. 5 Inline ........................................................................................................................... 5 Selectors .......................................................................................................................... 5 Combining Selectors ................................................................................................... 5 Comma mean OR............................................................................................................ 5 Using ............................................................................................................................... 5 Pseudo Class ................................................................................................................... 6 You don't define these, they're just there ................................................................... 6 Selector Precidence ......................................................................................................... 6 The more specific the selector, the more precidence .................................................. 6 Color ............................................................................................................................... 6
JavaScript / jQuery.............................................................................................................. 7 Script Inclusion ............................................................................................................... 7 Data Types ...................................................................................................................... 7 Arrays.............................................................................................................................. 7 Structures (or sort of structures) ..................................................................................... 8 Addressing .................................................................................................................. 8 Variable Substitution (for the Key definition) ............................................................ 8 Object Intialization...................................................................................................... 8 String............................................................................................................................... 9 Strict Equality, Inequality ............................................................................................... 9 Collections ...................................................................................................................... 9 Functions....................................................................................................................... 10 // some code .................................................................................................................. 10 Calling a JavaScript function .................................................................................... 11 Returning................................................................................................................... 11 Handling Errors............................................................................................................. 11 ready function ............................................................................................................... 12 /* define another callback function here */............................................................... 12 ....................................................................................................... 12 jQuery Object................................................................................................................ 12 Noscript......................................................................................................................... 13
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Ken's Javascript, jQuery Notes
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User Interaction............................................................................................................. 13 Redirect ......................................................................................................................... 13
Php Html version of redirect ..................................................................................... 13 Getting the Link Clicked on.......................................................................................... 13 OnClick ......................................................................................................................... 14
To a url ...................................................................................................................... 14 Math .............................................................................................................................. 14 Older Browser Trick ..................................................................................................... 14 Strings ........................................................................................................................... 14
Trim, Length ............................................................................................................. 14 Popups........................................................................................................................... 15
Confirmation ............................................................................................................. 15 Event Handlers.............................................................................................................. 15
Keyboard events........................................................................................................ 16 Checking Form Info with Javascript............................................................................. 16
Alternative (without global onsubmit handler)......................................................... 16 DOM ............................................................................................................................. 17 Common DOM calls for form validation...................................................................... 17 Table object properties.................................................................................................. 17 Date/Time ..................................................................................................................... 20
20July12
Ken's Javascript, jQuery Notes
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Html
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