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Javascript-Based Seamless text scrolling
This article mainly shares with you the code that uses pure javascript to implement a controllable. The effect is very good. If you need it, you can refer to it.
Seamless text scrolling:
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<! DOCTYPE html> <! -- [If lt IE 7]> <! -- [If IE 7]> <! -- [If IE 8]> <! -- [If IE 9]> <! -- [If (gt IE 9) |! (IE)]> <! --> <Html lang = "zh-CN"> <! -- <! [Endif] --> <Head> <Title> text scrolling </title> <Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Style type = "text/css"> * {Margin: 0; padding: 0 ;} Body {padding: 20px ;} . Textbox {border: 1px solid # ddd; width: auto; overflow: hidden ;} . Textbox ul {list-style: none; position: relative ;} . Textbox ul li {padding: 5px 0 ;} </Style> </Head> <Body class = "home-page">
<Div id = "textbox" class = "textbox"> <Ul> <Li> automobile | Sports Class B cars drop by 30 thousand 5 </li> <Li> Home | a woman with such great decoration really cannot sit down </li> <Li> Education | RMB 0.1 million/person for the China (Shanghai) University of California (Shanghai) </li> <Li> automobile | Sports Class B cars drop by 30 thousand 5 parallel imported cars increase by 0.11 million </li> <Li> healthy | 14-year-old boy suffering from Hormone Abuse cannot grow for 10 years </li> <Li> digital | what is the latest mobile phone price to say about the acceleration of broadband fee reduction? </Li> <Li> auto | additional price of parallel imported vehicles: 0.11 million </li> <Li> automobile | Sports Class B cars drop by 30 thousand 5 </li> <Li> auto | additional price of parallel imported vehicles: 0.11 million </li> <Li> sports | Evergrande AFC Champions League wins genuine jerseys by guessing scores </li> </Ul> <A href = "#" class = "btnPrev"> left </a> <A href = "#" class = "btnNext"> right </a> </Div> <Br> <Br> <Div id = "textbox2" class = "textbox"> <Ul> <Li> automobile | Sports Class B cars drop by 30 thousand 5 </li> <Li> Home | a woman with such great decoration really cannot sit down </li> <Li> Education | RMB 0.1 million/person for the China (Shanghai) University of California (Shanghai) </li> <Li> automobile | Sports Class B cars drop by 30 thousand 5 parallel imported cars increase by 0.11 million </li> <Li> healthy | 14-year-old boy suffering from Hormone Abuse cannot grow for 10 years </li> <Li> digital | what is the latest mobile phone price to say about the acceleration of broadband fee reduction? </Li> <Li> auto | additional price of parallel imported vehicles: 0.11 million </li> <Li> automobile | Sports Class B cars drop by 30 thousand 5 </li> <Li> auto | additional price of parallel imported vehicles: 0.11 million </li> <Li> sports | Evergrande AFC Champions League wins genuine jerseys by guessing scores </li> </Ul> <A href = "#" class = "btnPrev"> up </a> <A href = "#" class = "btnNext"> down </a> </Div> <Script type = "text/javascript" src = "scripts/jquery-1.11.1.min.js"> </script> <Script type = "text/javascript">
// Scrolled seamlessly from the left-side Navigation Pane Scroll ('# textbox', {vis: 2, btnHidden: false, dir: 'prev', type: 'H '}); Scroll ('# textbox2', {vis: 3, btnHidden: false, dir: 'prev', type: 'V '});
Function scroll (container, options ){ Var box = $ (container ); Var boxUl = box. find ('ul '). eq (0 ); Var LiHeight = 0; // The height of the cloned li list is not included. Var cloneLiHeight = 0; // contain the height of the cloned li list Var LiWidth = 0; // The width of the cloned li list is not included. Var cloneLiWidth = 0; // contains the width of the cloned li list Var Lis = boxUl. children (); Var btnPrev = box. find ('. btnprev '); Var btnNext = box. find ('. btnNext ');
// Default parameter Var defult = { Vis: 2, // display number AutoPlay: true, // automatic playback Speed: 50, // scroll speed Dir: 'prev', // scroll direction BtnHidden: false, // whether the button is hidden Type: 'V' // horizontal or vertical
}; Var opt = $. extend ({}, defult, options );
// Construct the DOM Structure Var lastClone = 0; // The last cloned Element Var lastCloneHeight = 0; // The height of the last cloned Element Var allCloneHeight = 0; // total height of all cloned Elements Var lastCloneWidth = 0; Var allCloneWidth = 0; Var visHeight = 0; // visible height Var visWidth = 0; Var boxUl_wrap;
If (opt. type = "v") {// vertical direction Lis. each (function (){ $ (This). height ($ (this). height ()); LiHeight + = $ (this). outerHeight (true ); }); LastClone = boxUl. children (': last'). clone (). addClass ('clone'). prependTo (boxUl ); LastCloneHeight = lastClone. outerHeight (true ); AllCloneHeight = lastClone. outerHeight (true );
For (var I = 0; I <opt. vis; I ++ ){ Lis. eq (I). clone (). addClass ('clone '). appendTo (boxUl ); AllCloneHeight + = Lis. eq (I). outerHeight (true ); }
VisHeight = allCloneHeight-lastCloneHeight; CloneLiHeight = LiHeight + allCloneHeight;
BoxUl_wrap = $ ('<div> </div> 'privacy .css ({'width': '000000', 'height': visHeight, 'overflow': 'hidd ', 'position': 'relative '}). attr ('id', 'ulwre '); BoxUl.css ({'height': cloneLiHeight, 'top':-lastCloneHeight}). wrap (boxUl_wrap );
} Else if (opt. type = "h") {// horizontal direction Lis.css ({'white': 'nowre', 'float': 'left', 'paddingright': '10px '}); Lis. each (function (){ $ (This). width ($ (this). width ()); LiWidth + = $ (this). outerWidth (true ); });
LastClone = boxUl. children (': last'). clone (). addClass ('clone'). prependTo (boxUl ); LastCloneWidth = lastClone. outerWidth (true ); AllCloneWidth = lastClone. outerWidth (true );
For (var j = 0; j <opt. vis; j ++ ){ Lis. eq (j). clone (). addClass ('clone '). appendTo (boxUl ); AllCloneWidth + = Lis. eq (j). outerWidth (true ); } VisHeight = Lis. eq (0). outerHeight (true ); VisWidth = allCloneWidth-lastCloneWidth; CloneLiWidth = LiWidth + allCloneWidth;
BoxUl_wrap = $ ('<div> </div> 'privacy .css ({'width': visWidth, 'height': visHeight, 'overflow': 'hidd', 'position ': 'relative '}). attr ('id', 'ulwre '); BoxUl.css ({'width': cloneLiWidth, 'left':-lastCloneWidth}). wrap (boxUl_wrap ); Box.css ({'width': visWidth }); }
// Add event processing Var timer = null; Var scrollTop = function (){ ClearInterval (timer ); Timer = setInterval (function (){ Var tmp = parseInt(boxUl.css ('top'). replace ('px ',"")); Tmp --; BoxUl. animate ({'top': tmp}, 0, function (){ If (tmp <=-(LiHeight + lastCloneHeight )){ BoxUl.css ('top',-lastCloneHeight ); } }); }, Opt. speed ); };
Var scrollDown = function (){ ClearInterval (timer ); Timer = setInterval (function (){ Var tmp = parseInt(boxUl.css ('top'). replace ('px ',"")); Tmp ++; BoxUl. animate ({'top': tmp}, 0, function (){ If (tmp> = 0 ){ BoxUl.css ('top',-(LiHeight )); } }); }, Opt. speed ); };
Var scrollLeft = function (){ ClearInterval (timer ); Timer = setInterval (function (){ Var tmp = parseInt(boxUl.css ('left'). replace ('px ',"")); Tmp --; BoxUl. animate ({'left': tmp}, 0, function (){ If (tmp <=-(LiWidth + lastCloneWidth )){ BoxUl.css ('left',-(lastCloneWidth )); } }); }, Opt. speed ); };
Var scrollRight = function (){ ClearInterval (timer ); Timer = setInterval (function (){ Var tmp = parseInt(boxUl.css ('left'). replace ('px ',"")); Tmp ++; BoxUl. animate ({'left': tmp}, 0, function (){ If (tmp> = 0 ){ BoxUl.css ('left',-(LiWidth )); } }); }, Opt. speed ); };
Var scrollType = function (type, dir ){ If (Lis. length> = opt. vis) {// The number of displays cannot exceed the number of lists; otherwise, the results are not displayed. Var sdir = typeof dir! = "Undefined "? Dir: opt. dir; Switch (type ){ Case "v ": If (sdir = "prev") {scrollTop () ;}else {scrollDown ();} Break; Case "h ": If (sdir = "prev") {scrollLeft () ;}else {scrollRight ();} } } };
If (opt. autoPlay ){ ScrollType (opt. type ); }
// Add event processing Box. find ('# ulWrap'). hover (function (){ ClearInterval (timer ); }, Function (){ ScrollType (opt. type ); });
// Hide the button If (! Opt. btnHidden ){
BtnPrev. unbind ('mouseover '); BtnNext. unbind ('mouseover ');
BtnPrev. mouseover (function (){ ScrollType (opt. type, "prev "); }); BtnNext. mouseover (function (){ ScrollType (opt. type, "next "); }); } Else { BtnPrev. hide (); BtnNext. hide (); }
} </Script> </Body> </Html> |
Some questions:
There is no problem with local hosts, But it passes through document. after the write () operator is written into the primary row, the li height () operator in the vertical mode has a problem. The reason is unknown ..
The above is all the content of this article. I hope you will like it.
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