javascript - Fixed Header and Auto Scrolling To Div's -

-

i using following script make scroll section within page when clicked on it's link top navigation menu in header

so in html have assigned id's each section (sectio1, section2, section3 etc.), , have assigned these section in top navigation href's example <a href="#about">about us</a>. when click on top navigation take div have id of #about.

the scrolling bit working, however, because header fixed - when scrolls section top bit of section appears cropped since header overlaying it. click here live preview: www.loaistudio.com can this? can add below javascript make when scroll section gives link navigation class of active?

$(document).ready(function () {             $('a[href*=#]:not([href=#])').click(function() {         if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')              || location.hostname == this.hostname) {              var target = $(this.hash);             target = target.length ? target : $('[name=' + this.hash.slice(1) +']');                if (target.length) {                  $('html,body').animate({                      scrolltop: target.offset().top                 }, 700);                 return false;             }         }     });        });

scrolling

simple solution alter scrolltop factor in height of menu bar...

something like:

scrolltop: target.offset().top - 186

you height dynamically if menu isn't fixed height.

active link

you having scroll event trigger , checking whether scrolltop between heights x , y home or y , z etc..

okay can use following code...

$(window).scroll(function(){     var scrollheight = $(window).scrolltop() + 186;      var welcomeoffset     = $('#welcome').offset().top;     var aboutoffset       = $('#about').offset().top;     var portfoliooffset   = $('#portfolio').offset().top;     var endorsementoffset = $('#endorsements').offset().top;     var contactoffset     = $('#contact').offset().top;      var forecolor = "777";     var backcolor = "fafafa";      $('#mainmenu li a').css({background:"#ffffff", color: "#f58221"})     if(scrollheight >= welcomeoffset && scrollheight < aboutoffset){         $('#mainmenu :nth-child(1) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= aboutoffset && scrollheight < portfoliooffset){         $('#mainmenu :nth-child(2) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= portfoliooffset && scrollheight < endorsementoffset){         $('#mainmenu :nth-child(4) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= endorsementoffset && scrollheight < contactoffset){         $('#mainmenu :nth-child(3) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= contactoffset){         $('#mainmenu :nth-child(5) a').css({background:"#"+backcolor, color:"#"+forecolor})     } })

the above code can go in <script>...</script> tags anywhere put other jquery put before (or after) code you've shown... i.e. above (or below)

$(document).ready(function () {.....})

if want test before adding site can put firefox scratchpad (have page open , press shift+f4 in firefox) copy/paste above code in , hit ctrl+r scroll , down see working.

to clarify how codes should together

$(window).scroll(function(){     var scrollheight = $(window).scrolltop() + 186;      var welcomeoffset     = $('#welcome').offset().top;     var aboutoffset       = $('#about').offset().top;     var portfoliooffset   = $('#portfolio').offset().top;     var endorsementoffset = $('#endorsements').offset().top;     var contactoffset     = $('#contact').offset().top;      var forecolor = "777";     var backcolor = "fafafa";      $('#mainmenu li a').css({background:"#ffffff", color: "#f58221"})     if(scrollheight >= welcomeoffset && scrollheight < aboutoffset){         $('#mainmenu :nth-child(1) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= aboutoffset && scrollheight < portfoliooffset){         $('#mainmenu :nth-child(2) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= portfoliooffset && scrollheight < endorsementoffset){         $('#mainmenu :nth-child(4) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= endorsementoffset && scrollheight < contactoffset){         $('#mainmenu :nth-child(3) a').css({background:"#"+backcolor, color:"#"+forecolor})     }     if(scrollheight >= contactoffset){         $('#mainmenu :nth-child(5) a').css({background:"#"+backcolor, color:"#"+forecolor})     } })   $(document).ready(function () {             $('a[href*=#]:not([href=#])').click(function() {         if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')              || location.hostname == this.hostname) {              var target = $(this.hash);             target = target.length ? target : $('[name=' + this.hash.slice(1) +']');                if (target.length) {                  $('html,body').animate({                      scrolltop: target.offset().top                 }, 700);                 return false;             }         }     });        });

Comments

Post a Comment

Popular posts from this blog

c# - How Configure Devart dotConnect for SQLite Code First? -

-
can configure following sample code ? when run following code, error : no entity framework provider found ado.net provider invariant name 'devart.data.sqlite' setting in machine.config <system.data> <dbproviderfactories> <add name="dotconnect sqlite" invariant="devart.data.sqlite" description="devart dotconnect sqlite" type="devart.data.sqlite.sqliteproviderfactory, devart.data.sqlite, version=4.6.287.0, culture=neutral, publickeytoken=09af7300eec23701" /> </dbproviderfactories> </system.data> after add below block code in app.config <?xml version="1.0"?> <configuration>   <configsections> <!-- more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 --> <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entit...
Read more

java - Copying object fields -

-
what best way of copying classes when need have 2 independent variables? have simple class: public class myclass { boolean = false; string b= "not empty"; } do need make method : assign(myclass data ) { a= data.a; b= data.b; } is there automatic method copy (duplicate) objects in java? do need make method : pretty close. instead of making method, should make constructor. such constructors called copy constructor , , create them this: myclass(myclass data) { = data.a; b = data.b; } and create copy of instance, use constructor this: myclass obj1 = new myclass(); myclass obj2 = new myclass(obj1); copy constructor can tedious : using copy constructor create deep-copy can tedious, when class has mutable fields. in case, assignment create copy of reference, , not object itself. have create copy of fields (if want deep copy). can go recursive. a better way create deep copy serialize , deserialize object. why not use clone()? ...
Read more

c++ - Clear the memory after returning a vector in a function -

-
i have function processes , stores lot of data in , returns results vector of class. amount of data stored in function tremendous , want clear storage memory of function after finished job. necessary (does function automatically clear memory) or should clear memory function? update: vector<customers> process(char* const *filename, vector<int> id) { vector<customers> list_of_customers; (perform actions) return list_of_customers; } variables defined locally within function automatically released @ end of function scope. destructors objects called, should free memory allocated objects (if objects coded correctly). example of such object std::vector . anything you've allocated new must have corresponding delete release storage. try avoid doing own allocation , use raii instead, i.e. containers or smart pointers.
Read more