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[Reprint] example of dragging and dropping a DIV in a webpage and stopping a div

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This example not only supports drag and drop, but also supports dock.

 

<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <br/> <HTML xmlns = "http://www.w3.org/1999/xhtml"> <pead> <br/> <meta http-equiv = "Content-Type" content = "text/html; charset = gb2312 "/> <br/> <title> freedom </title> <br/> <MCE: style type =" text/CSS "> <! -- <Br/> body {<br/> width: 100%; <br/> MAX-Height: 100%; <br/> padding: 0px; <br/> margin: 0px; <br/> text-align: center; <br/>}< br/>. cell {<br/> float: Left; <br/> clear: Right; <br/>}< br/>. row {<br/> clear: Both; <br/>}< br/>. r_nbsp {<br/> width: 20px; <br/>}< br/>. root {<br/> width: 868px; <br/> margin: 0 auto; <br/>}< br/>. root * {<br/>/* attribute FF Description */<br/>-moz-user-select: none; <br/>}< br/>. line {<br/> width: 2 02px; <br/> line-Height: 20px; <br/> Height: 20px; <br/> overflow: hidden; <br/> font-size: 12px; <br/>}< br/>. move {<br/> border: # cccccc 1px solid; <br/> width: 200px; <br/> Height: aotu; <br/>}< br/>. title {<br/> Height: 24px; <br/> cursor: move; <br/> Background: #0080c0; <br/> font-size: 12px; <br/> font-weight: bold; <br/> color: # ffffff; <br/> line-Height: 24px; <br/> text-align: center; <br/>}< br/>. content {<br/> Bo Rder-top: # cccccc 1px solid; <br/> Height: 100px; <br/> background-color: # f7f7f7; <br/>}< br/>. cdrag_temp_div {<br/> border: # cccccc 1px dashed; <br/>}< br/> --> </MCE: style> <style type = "text/CSS" mce_bogus = "1"> body {<br/> width: 100%; <br/> MAX-Height: 100%; <br/> padding: 0px; <br/> margin: 0px; <br/> text-align: center; <br/>}< br/>. cell {<br/> float: Left; <br/> clear: Right; <br/>}< br/>. row {<br/> clear: Both; <BR/>}< br/>. r_nbsp {<br/> width: 20px; <br/>}< br/>. root {<br/> width: 868px; <br/> margin: 0 auto; <br/>}< br/>. root * {<br/>/* attribute FF Description */<br/>-moz-user-select: none; <br/>}< br/>. line {<br/> width: 202px; <br/> line-Height: 20px; <br/> Height: 20px; <br/> overflow: hidden; <br/> font-size: 12px; <br/>}< br/>. move {<br/> border: # cccccc 1px solid; <br/> width: 200px; <br/> Height: aotu; <br/>}< br/>. title {<br/> Height: 24px; <br/> cursor: move; <br/> Background: #0080c0; <br/> font-size: 12px; <br/> font-weight: bold; <br/> color: # ffffff; <br/> line-Height: 24px; <br/> text-align: center; <br/>}< br/>. content {<br/> border-top: # cccccc 1px solid; <br/> Height: 100px; <br/> background-color: # f7f7f7; <br/>}< br/>. cdrag_temp_div {<br/> border: # cccccc 1px dashed; <br/>}</style> <br/> <MCE: Script Type = "text/JavaScript"> <! -- <Br/> var class ={< br/> // create a class <br/> Create: function () {<br/> return function () {<br/> This. initialize. apply (this, arguments); <br/>}; <br/>}< br/>}; <br/> var $ A = function () {<br/> // convert the array <br/> return? Array. apply (null, A): new array; <br/>}; <br/> var $ = function (ID) {<br/> // obtain the object <br/> return document. getelementbyid (ID); <br/>}; <br/> object. extend = function (a, B) {<br/> // append method <br/> for (var I in B) A [I] = B [I]; <br/> return a; <br/>}; <br/> object. extend (object, {<br/> addevent: function (A, B, C, D) {<br/> // Add a function <br/> If (. attachevent). attachevent (B [0], c); <br/> else. addeventlistener (B [1] | B [0]. replace (/^ on/, ""), c, d | false); <br/> return C; <br/>}, <br/> delevent: function (A, B, C, D) {<br/> If (. detachevent). detachevent (B [0], c); <br/> else. removeeventlistener (B [1] | B [0]. replace (/^ on/, ""), c, d | false); <br/> return C; <br/>}, <br/> reevent: function () {<br/> // obtain the event <br/> return window. event? Window. event: (function (o) {<br/> do {<br/> O = O. Caller; <br/>}while (O &&! /^/[Object [A-Za-Z] * event/] $ /. test (O. arguments [0]); <br/> return O. arguments [0]; <br/>}) (this. reevent); <br/>}< br/>}); <br/> function. prototype. bind = function () {<br/> // bind event <br/> var WC = this, A = $ A (arguments), O =. shift (); <br/> return function () {<br/> WC. apply (O,. concat ($ A (arguments); <br/>}; <br/> var table = Class. create (); <br/> table. prototype = {<br/> initialize: Function () {<Br/> // initialization <br/> var WC = This; <br/> WC. cols = new array; // create a column <br/>}, <br/> addcols: function (o) {<br/> // Add column <br/> var WC = This, cols = WC. cols, I = cols. length; <br/> return Cols [I] ={< br/> ID: I, div: O, rows: New array, // create a row <br/> addrow: WC. addrow, chrow: WC. chrow, inrow: WC. inrow, delrow: WC. delrow <br/>}; <br/>}, <br/> addrow: function (o) {<br/> // Add a row <br/> var WC = This, rows = WC. rows, I = rows. length; <br/> return rows [I] ={< br/> ID: I, div: O, cols: WC <br/>}; <br/> }, <br/> inrow: function (a, B) {<br/> // insert a row <br/> var WC = B. cols = This, rows = WC. rows, I; <br/> if (a <rows. length) {<br/> for (I = A; I <rows. length; I ++) rows [I]. id ++; <br/> rows. splice (A, 0, B); <br/> B. id = A; <br/> return B; <br/>}else {<br/> B. id = rows. length; <br/> return rows [B. id] = B; <BR/>}< br/>}, <br/> delrow: function (a) {<br/> // delete a column <br/> var WC = This, rows = WC. rows, I, R; <br/> if (a> = rows. length) return; <br/> r = rows [a]; <br/> rows. splice (A, 1); <br/> for (I = A; I <rows. length; I ++) rows [I]. id = I; <br/> return r; <br/>}< br/>}; <br/> var cdrag = Class. create (); <br/> cdrag. ie =/MSIE /. test (window. navigator. useragent); <br/> cdrag. prototype = {<br/> initialize: funct Ion () {<br/> // initialize the member <br/> var WC = This; <br/> WC. table = new table; // create a table object <br/> WC. ifunc = WC. efunc = NULL; <br/> WC. OBJ = {on: {A: NULL, B: ""}, row: NULL, left: 0, top: 0 };< br/> WC. temp = {row: NULL, div: document. createelement ("Div") }; <br/> WC. temp. div. setattribute (cdrag. ie? "Classname": "class", "cdrag_temp_div"); <br/> WC. temp. div. innerhtml = ""; <br/>}, <br/> remouse: function (a) {<br/> // obtain the mouse position <br/> var E = object. reevent (); <br/> return {<br/> X: document.doc umentelement. scrollleft + E. clientx, <br/> Y: document.doc umentelement. scrolltop + E. clienty <br/>}; <br/>}, <br/> reposition: function (o) {<br/> // obtain the absolute position of an element <br/> var $ x = $ y = 0; <br/> do {<br/> $ x + = O. off Setleft; <br/> $ Y + = O. offsettop; <br/>}while (O = O. offsetparent) & O. tagname! = "Body"); <br/> return {X: $ X, Y: $ y };< br/>}, <br/> smove: function (o) {<br/> // set the parameter when the drag starts <br/> var WC = This; <br/> If (WC. ifunc | WC. efinc) return; <br/> var mouse = WC. remouse (), OBJ = WC. OBJ, temp = WC. temp, DIV = O. div, position = WC. reposition (DIV); <br/> obj. row = O; <br/> obj. on. B = "me"; <br/> obj. left = mouse. x-position. x; <br/> obj. top = mouse. y-position. y; <br/> temp. row = document. Body. appendchild (div. clonenode (true); // copy the pre-drag object <br/> with (temp. row. style) {<br/> // set the copy object <br/> position = "absolute"; <br/> left = mouse. x-obj. left + "PX"; <br/> Top = mouse. y-obj. top + "PX"; <br/> zindex = 100; <br/> opacity = "0.3"; <br/> filter = "alpha (opacity: 30 )"; <br/>}< br/> with (temp. div. style) {<br/> // sets the position object <br/> Height = div. clientheight + "PX"; <br/> width = div. clientwidth + "PX"; <br />}< Br/>/* Div. parentnode. insertbefore (temp. div, Div); <br/> Div. style. display = "NONE"; // hide the pre-drag object */<br/> Div. parentnode. replaceChild (temp. div, Div); <br/> WC. ifunc = object. addevent (document, ["onmousemove"], WC. imove. BIND (WC); <br/> WC. efunc = object. addevent (document, ["onmouseup"], WC. emove. BIND (WC); <br/> document. onselectstart = new function ("Return false"); <br/>}, <br/> imove: function () {<Br/> // when the mouse moves, set the parameter <br/> var WC = This, cols = WC. table. cols, mouse = WC. remouse (), OBJ = WC. OBJ, temp = WC. temp, row = obj. row, DIV = temp. row, <br/> t_position, t_cols, t_rows, I, j; <br/> with (div. style) {<br/> left = mouse. x-obj. left + "PX"; <br/> Top = mouse. y-obj. top + "PX"; <br/>}< br/> for (I = 0; I <cols. length; I ++) {<br/> t_cols = Cols [I]; <br/> t_position = WC. reposition (t_cols.div ); <Br/> If (t_position.x <mouse. X & t_position.x + t_cols.div.offsetwidth> mouse. x) {<br/> If (t_cols.rows.length> 0) {// if the number of rows in this column is greater than 0 <br/> If (WC. reposition (t_cols.rows [0]. div ). Y + 20> mouse. y) {<br/> // If the cursor position is greater than the top of the first line .. <Br/> // up <br/> obj. on. A = t_cols.rows [0]; <br/> obj. on. B = "up"; <br/> obj. on. a. div. parentnode. insertbefore (temp. div, obj. on. a. div); <br/>} else if (t_cols.rows.length> 1 & t_cols.rows [0] = row & <br/> WC. reposition (t_cols.rows [1]. div ). Y + 20> mouse. y) {<br/> // if the first row is a drag object and the cursor is greater than the second row, no motion is performed .. <Br/> // up <br/> obj. on. B = "me"; <br/> t_cols.rows [1]. div. parentnode. insertbefore (temp. div, t_cols.rows [1]. div); <br/>}else {<br/> for (j = t_cols.rows.length-1; j>-1; j --) {<br/> // resend to upstream query <br/> t_rows = t_cols.rows [J]; <br/> If (t_rows = obj. row) continue; <br/> If (WC. reposition (t_rows.div ). Y <mouse. y) {<br/> // If the cursor is greater than this line, it is under this line <br/> If (t_rows.id + 1 <t_cols.rows.length & t_cols.rows [t_ro WS. ID + 1]! = Obj. row) {<br/> // if this row has the next row, insert the row above the next row. <br/> t_cols.rows [t_rows.id + 1]. div. parentnode. <br/> insertbefore (temp. div, t_cols.rows [t_rows.id + 1]. div); <br/> obj. on. A = t_rows; <br/> obj. on. B = "down"; <br/>} else if (t_rows.id + 2 <t_cols.rows.length) {<br/> // if the next row of the row is a drag object, the row is inserted to the next two rows, that is, the drag object returns the original position <br/> t_cols.rows [t_rows.id + 2]. div. parentnode. <br/> insertbefore (temp. div, t_cols.rows [t_rows.id + 2]. div); <br /> Obj. on. B = "me"; <br/>}else {<br/> // If none of the preceding conditions are met, put them in the lowest row <br/> t_rows.div.parentnode.appendchild (temp. div); <br/> obj. on. A = t_rows; <br/> obj. on. B = "down"; <br/>}< br/> return; <br/>}< br/>} else {<br/> // Add a new row without content in this column <br/> t_cols.div.appendchild (temp. div); <br/> obj. on. A = t_cols; <br/> obj. on. B = "new"; <br/>}< br/>}, <br/> emove: function () {<br/> // set the parameter when the mouse is released <br/> var WC = th Is, OBJ = WC. OBJ, temp = WC. temp, row = obj. row, DIV = row. div, o_cols, n_cols; <br/> If (obj. on. B = "up") {<br/> // Add to the top <br/> o_cols = obj. row. cols; <br/> n_cols = obj. on. a. cols; <br/> n_cols.inrow (0, o_cols.delrow (obj. row. ID); <br/>}else if (obj. on. B = "down") {<br/> // Add <br/> o_cols = obj. row. cols; <br/> n_cols = obj. on. a. cols; <br/> n_cols.inrow (obj. on. a. ID + 1, o_cols.delrow (obj. row. ID); <Br/>} else if (obj. on. B = "new") {<br/> // Add to the non-content column <br/> o_cols = obj. row. cols; <br/> n_cols = obj. on. a; <br/> n_cols.inrow (0, o_cols.delrow (obj. row. ID); <br/>}< br/> temp. div. parentnode. replaceChild (DIV, temp. div); <br/> temp. row. parentnode. removechild (temp. row); <br/> Delete temp. row; <br/> object. delevent (document, ["onmousemove"], WC. ifunc); <br/> object. delevent (document, ["onmouseup"], WC. efunc); <Br/> document. onselectstart = WC. ifunc = WC. efunc = NULL; <br/>}, <br/> Add: function (o) {<br/> // Add an object <br/> var WC = this; <br/> object. addevent (O. div. childnodes [cdrag. ie? 0: 1], ["onmousedown"], WC. smove. BIND (WC, O); <br/>}, <br/> parse: function (o) {<br/> // initialize the member <br/> var WC = This, table = WC. table, cols, I, j; <br/> for (I = 0; I <O. length; I ++) {<br/> Cols = table. addcols (O [I]. cols); <br/> for (j = 0; j <o [I]. rows. length; j ++) <br/> WC. add (cols. addrow (O [I]. rows [J]); <br/>}< br/>}; <br/> object. addevent (window, ["onLoad"], function () {<br/> var WC = new cdrag; <br/> WC. parse ([<br/>{< br/> Cols: $ ("M_1"), rows: [$ ("m_1_1"), $("m_1_2 "), $ ("m_1_3"), $ ("m_1_4")] <br/>}, <br/>{< br/> Cols: $ ("M_2"), rows: [$ ("m_2_1"), $ ("m_2_2"), $ ("m_2_3"), $ ("m_2_4")] <br/> }, <br/>{< br/> Cols: $ ("M_3"), rows: [$ ("m_3_1"), $("m_3_2 "), $ ("m_3_3"), $ ("m_3_4")] <br/>}, <br/>{< br/> Cols: $ ("M_4"), rows: [$ ("m_4_1"), $ ("m_4_2"), $ ("m_4_3"), $ ("m_4_4")] <br/>}< br/>]); <br/>}); <br/> // --> </MCE: SCRIPT> <br/> </pead> <body> <br/> <Div class = "root"> <br/> <Div class = "cell" id = "M_1"> <br/> <Div class = "line"> <br/> first column </div> <br/> <Div class = "move" ID = "m_1_1"> <br/> <Div class = "title"> <br/> first statement in the first column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_1_2"> <br/> <Div class = "title"> <br/> the second statement in the first column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_1_3"> <br/> <Div class = "title"> <br/> third statement in the first column </div> <br/> <Div class = "content"> <br/> </div> <br/> </div> <br/> <Div class = "move" id = "m_1_4"> <br/> <Div class = "title"> <br/> fourth statement </div> <br/> <Div class = "content"> <br/> </div> <br/> </div> <br/> <Div class = "cell r_nbsp"> <br/> </div> <br/> <Div class = "cell" id = "M_2 "> <br/> <Div class =" line "> <br/> second column </div> <br/> <Div class =" move "id =" m_2_1"> <br/> <Div class = "title"> <br/> the first statement in the second column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_2_2"> <br/> <Div class = "title"> <br/> description of the second column </div> <br/> <Div class = "content"> <br/> </div> <br/> </div> <br/> <Div class = "move" id = "m_2_3"> <br/> <Div class = "title"> <br/> third statement in the second column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_2_4"> <br/> <Div class = "title"> <br/> fourth comment in the second column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "cell r_nbsp"> <br/> </div> <br/> <Div class = "cell" id = "M_3"> <br /> <Div class = "line"> <br/> third column </div> <br/> <Div class = "move" id = "m_3_1"> <br/> <Div class = "title"> <br/> first remark of the third column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_3_2"> <br/> <Div class = "title"> <br/> the second statement in the third column </div> <br/> <Div class = "content"> <br/> </div> <br/> </div> <br/> <Div class = "move" id = "m_3_3"> <br/> <Div class = "title"> <br/> third statement </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_3_4"> <br/> <Div class = "title"> <br/> description of the fourth column </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "cell r_nbsp"> <br/> </div> <br/> <Div class = "cell" id = "M_4"> <br/> <Div class = "line"> <br/> column 4 </div> <br/> <Div class = "move" id = "m_4_1"> <br/> <Div class = "title"> <br/> the first statement in column 4 </div> <br/> <Div class = "content"> <br/> </div> <br/> </div> <br/> <Div class = "move" id = "m_4_2"> <br/> <Div class = "title"> <br/> The second statement in column 4 </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_4_3"> <br/> <Div class = "title"> <br/> third statement of column 4 </div> <br/> <Div class = "content"> <br/> </div> <br/> <Div class = "move" id = "m_4_4"> <br/> <Div class = "title"> <br/> statement of the fourth column </div> <br/> <Div class = "content"> <br/> </div> <br/> </body> </ptml>

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