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In this paper, we illustrate the method of JavaScript implementation of table additions and deletions. Share to everyone for your reference. The implementation methods are as follows:
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DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <html xmlns=" http://www.w3.org/1999/xhtml "> <head> <meta http-equiv=" Content-type "content=" text/html; Charset=utf-8 "/> <title>javascript form additions </title> <script type=" Text/javascript "> var _otable_ = Null var _otbody_ = null; var _arrselect_ = new Array; var _otempvalue_=new Object; _otempvalue_["$updateIndex"]=-1; var _theadname_=new Array ("name", "Sex", "age", "place of origin", "Delete No"); var cells_count=_theadname_.length-1; String.prototype.trim=function () {return this.replace (/(^s*) (s*$)/g, ');} window.onload = function () {var $oAdd = docu Ment.getelementbyid ("Btnadd"); $oAdd. onclick = function () {var _ocol1_ = document.getElementById ("Col1"); var _ocol2_ = document.getElementById ("Col2") ; var _ocol3_ = document.getElementById ("Col3"); var _ocol4_ = document.getElementById ("Col4"); if (!_otable_)//If no table exists, create new {_otable_ = Document.createElement ("table"); _otable_.setattribute ("Border", "1"); _otable_.setattribute ("width", "800px"); var _thead_=_otable_.createthead (); var _trow_=_thead_.insertrow (0); for (Var _headindex_=0;_headindex_<cells_count+1;_headindex_++) {var _tth=_trow_.insertcell (_headindex_); _ Tth.appendchild (document.createTextNode (_theadname_[_headindex_)); } _otbody_ = Document.createelement ("tbody"); _otable_.appendchild (_otbody_); document.getElementById ("Tabledata"). AppendChild (_otable_); } if (!_ocol1_.value.trim ()) {alert ("name must be filled out!") "); return;} Add a row of var _orow_ = _otbody_.insertrow (-1); Add 5 columns, four column values, one column select var _ocell1_ = _orow_.insertcell (-1); _ocell1_.appendchild (document.createTextNode (_ocol1_.value)); var _ocell2_ = _orow_.insertcell (-1); _ocell2_.appendchild (document.createTextNode (_ocol2_.value)); var _ocell3_ = _orow_.insertcell (-1); _ocell3_.appendchild (document.createTextNode (_ocol3_.value)); var _ocell4_ = _orow_.insertcell (-1); _ocell4_.appendchild (document.createTextNode (_ocol4_.value)); _oCol1_.value = ""; _ocol2_.value = ""; _ocol3_.value = ""; _ocol4_.value = ""; Select var _ocell5_ = _orow_.insertcell (4); _ocell5_.setattribute ("Style", "width:50px;"); var _ocheckbox_ = document.createelement ("input"); _ocheckbox_.setattribute ("Type", "checkbox"); _ocell5_.appendchild (_OCHECKBOX_); _ocheckbox_.onclick = function () {if (_ocheckbox_.checked) {var _rowindex_ = _ocheckbox_. Parentnode.parentnode.rowindex-1; _arrselect_.push (_ROWINDEX_); } _orow_.ondblclick = function () {var _opreupdateindex_=_otempvalue_["$updateIndex"]; var _opretemprow_=null; if (pars Eint (_opreupdateindex_)!=-1)//original selected row reset {if (!_otable_ | |!_otbody_) return; _opretemprow_= _otbody_.rows[parseint (_oPr EUPDATEINDEX_)]; var _cancelornot_=false; for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var $attributeNode _=_opretemprow_.cells[_ Cellindex_].firstchild; var $nodedata _=document.all $attributeNode _.getattribute ("value"): $attributeNode _.value; if ($nodedata _!=_otempvalue_["$" +_cellindex_]//Compared with the original value {_cancelornot_=confirm ("Your previous content has been modified to save changes?") "); Break } if (_cancelornot_) {//Avoid previous commit as null Var _firstnode_=_opretemprow_.cells[0].firstchild; var $firstnodedata _=_firstnode_. GetAttribute ("value"); if (! $firstnodedata _| |! $firstnodedata _.trim ()) {alert ("name cannot be empty, please edit it again!") "); _firstnode_.focus (); return;}; for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var _oldnode_=_opretemprow_.cells[_cellindex_]. FirstChild; var $nodedata _=document.all?_oldnode_.getattribute ("value"): _oldnode_.value; var _textnode_= document.createtextnode ($nodedata _); _opretemprow_.cells[_cellindex_].replacechild (_textnode_,_oldnode_); Delete _otempvalue_["$" +_cellindex_]; } else {for (var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var _oldnode_=_opretemprow_.cells[_ Cellindex_].firstchild; var _textnode_= document.createtextnode (_otempvalue_["$" +_cellindex_)); _opretemprow_.cells[_cellindex_].replacechild (_textnode_,_oldnode_); Delete _otempvalue_["$" +_cellindex_]; }}} _otempvalue_["$updateIndex"] = this.rowindex-1; There is only one text node in the cell for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var _textbox_= Document.createelement ("input"); _textbox_.setattribute ("type", "text"); var _prenode_=this.cells[_cellindex_].firstchild; _otempvalue_["$" +_cellindex_]=_prenode_.nodevalue; Record the original value _textbox_.setattribute ("value", _prenode_.nodevalue); This.cells[_cellindex_].replacechild (_textbox_, _prenode_); } }; }; Delete var $oDelete = document.getElementById ("Btndelete"); $oDelete. onclick = function () {if (_arrselect_.length = 0) {alert ("You have not selected the row you want to delete."); return;} if (_otable_ && Amp _otbody_) {var _confirmmsg_ = "Are you sure you want to remove the name is as follows: N"; for (var index = 0, Ilen = _arrselect_.length; index < Ilen; index++) { var _deletname_ = _otbody_.rows[parseint (_arrselect_[index])].cells[0].firstchild.nodevalue; _confirmmsg_ = _confirmmsg_.concat (_deletname_ + "n"); } _confirmmsg_ = _confirmmsg_.concat ("" Information?) "); if (!confirm (_confirmmsg_)) return; for (var index =_arrselect_.length-1; Index >= 0; index--) {_otbody_.deleterow (parseint (_arrselect_[index]));} _arrselect_.splice (0,_arrselect_.length); Empty the select list}; Update: (Red section for updated code)//update var $oUpdate = document.getElementById ("Btnupdate"); $oUpdate. onclick = function () {var _opreupdateindex_=_otempvalue_["$updateIndex"] if (parseint (_opreupdateindex_) = =- 1 {alert ("You did not edit any update lines!"); return; if (_otable_ && _otbody_) {if (confirm) (Are you sure you want to modify it?) ) {var _temprow_= _otbody_.rows[parseint (_opreupdateindex_)]; var $namenode =_temprow_.cells[0].firstchild; var $namenodevalue =document.all $namenode. getattribute ("value"): $namenode. Value; if (! $namenodevalue | |! $namenodevalue. Trim ()) {alert ("name cannot be empty, please edit it again!") "); $namenode. focus (); return;} for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var $tmpnode _=_temprow_.cells[_cellindex_]. FirstChild; var $nodedata _=document.all $tmpnode _.getattribute ("value"): $tmpnode _.value; var _textnode_= document.createtextnode ($nodedata _); var _oldnode_=_temprOw_.cells[_cellindex_].firstchild; _temprow_.cells[_cellindex_].replacechild (_textnode_,_oldnode_); Delete _otempvalue_["$" +_cellindex_]; }} _otempvalue_["$updateIndex"] =-1}; Find var $oFind = document.getElementById ("Btnfind"); $oFind. Onclick=function () {if (!_otable_ &&!_otbody_) {alert ("No data available at this time!") "); return;} Before the judge has edited the uncommitted var _opreupdateindex_=_otempvalue_["$updateIndex"]; var _opretemprow_=null; if (parseint (_opreupdateindex_)!=-1)//original selected row reset {if (!_otable_ | |!_otbody_) return; _opretemprow_= _otbody_.rows[parsei NT (_OPREUPDATEINDEX_)]; var _cancelornot_=false; for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var $childNode _=_opretemprow_.cells[_cellindex_] . firstchild; var $nodedata _=document.all $childNode _.getattribute ("value"): $childNode _.value; if ($nodedata _!=_otempvalue_["$" +_cellindex_])//compared to the original value {_cancelornot_=confirm ("Your previous content has been modified to save changes?"). "); Break } if (_cancelornot_) {//Avoid previous commit as empty Var _firstnode_=_opretemprow_.cells[0].firstchild; var $firstnodedata _=document.all?_firstnode_.getattribute ("value"): _firstnode_.value; if (! $firstnodedata _| |! $firstnodedata _.trim ()) {alert ("name cannot be empty, please edit it again!") "); _firstnode_.focus (); return;}; for (Var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var _oldnode_=_opretemprow_.cells[_cellindex_]. FirstChild; var $nodedata _=document.all?_oldnode_.getattribute ("value"): _oldnode_.value; var _textnode_= document.createtextnode ($nodedata _); _opretemprow_.cells[_cellindex_].replacechild (_textnode_,_oldnode_); Delete _otempvalue_["$" +_cellindex_]; } else {for (var _cellindex_=0;_cellindex_<cells_count;_cellindex_++) {var _oldnode_=_opretemprow_.cells[_ Cellindex_].firstchild; var _textnode_= document.createtextnode (_otempvalue_["$" +_cellindex_)); _opretemprow_.cells[_cellindex_].replacechild (_textnode_,_oldnode_); Delete _otempvalue_["$" +_cellindex_]; }}//Clear update list for (Var $obj _ in _otempvalue_) {Delete _otempvalue_[$obj _];}//_otempvalue_=new Object; _otempvalue_["$updateIndex"]=-1; Start querying var _$oselect_= document.getelementbyid ("Selectcol"); var _index_=_$oselect_.selectedindex; var _$oselectvalue_= _$oselect_.value; var _$oselecttext_= _$oselect_.options[_index_].text; var _$olike_=document.getelementbyid ("Col9"); var _$rowcollection_=_otbody_.rows; var _$rlen=_$rowcollection_.length; Switch (parseint (_$oselectvalue_)) {case 0:for (var _rindex=0;_rindex<_$rlen;_rindex++) {var _selectrow_=_$ Rowcollection_[_rindex]; var $pat = new RegExp (_$olike_.value.trim (), "I"); if (!_$olike_.value.trim ()) {_selectrow_.style.display=document.all? Block ":" Table-row ";} If the query box is empty, extract all ... Fuzzy search Else {if (! $pat. Test (_selectrow_.cells[0].firstchild.nodevalue.trim ())) {_selectrow_.style.display= ' None ';}}} Break Case 1:for (var _rindex=0;_rindex<_$rlen;_rindex++) {var _selectrow_=_$rowcollection_[_rindex]; var $pat = new RegExp (_$olike_.value.trim (), "I"); if (!_$olike_.value.trim ()) {_selectrow_.style.display=document.all? Block ":" Table-row ";} else {if (! $pAt.test (_selectrow_.cells[1].firstchild.nodevalue.trim ())) {_selectrow_.style.display= ' None ';}} } break; Case 2:for (var _rindex=0;_rindex<_$rlen;_rindex++) {var _selectrow_=_$rowcollection_[_rindex]; var $pat = new RegExp (_$olike_.value.trim (), "I"); if (!_$olike_.value.trim ()) {_selectrow_.style.display=document.all? Block ":" Table-row ";} else {if (! $pat. Test (_selectrow_.cells[2].firstchild.nodevalue.trim ())) {_selectrow_.style.display= ' None ';}}} Break Update (red section for newer) Case 3:for (var _rindex=0;_rindex<_$rlen;_rindex++) {var _selectrow_=_$rowcollection_[_rindex]; var $pat = new RegExp (_$olike_.value.trim (), "I"); if (!_$olike_.value.trim ()) {_selectrow_.style.display=document.all? Block ":" Table-row ";} else {if (! $pat. Test (_selectrow_.cells[3].firstchild.nodevalue.trim ())) {_selectrow_.style.display= ' None ';}}} Break } _arrselect_.splice (0,_arrselect_.length);//Clear Delete list var _checkboxlist_=document.getelementsbytagname ("input"); Resets the checkbox selection. for (Var _index=0,ilen=_checkboxlist_.length;_index<ilen;_index++) {if (_checkboxlist_[_index].type== "checkbox") {_checkboxlist_[_index].checked=false;}}}; var $oSelectAll = document.getElementById ("Btnselectall"); $oSelectAll. Onclick=function () {if (_otable_ && _otbody_) {var _$rowall_=_otbody_.rows; for (Var _rindex=0,_ rlen=_$rowall_.length;_rindex<_rlen;_rindex++) {var _selectrow_=_$rowall_[_rindex]; _selectrow_.style.display= Document.all? " Block ":" Table-row "; Delete from </head> <body> <fieldset> <legend> operation table, </script> </legend> < Fieldset> <legend> Add </legend> <label for= "Col1" > Name: </label> <input type= "text" id= " Col1 "/> <label for=" Col2 "> Gender: </label> <input type=" text "id=" Col2 "/> <label for=" Col3 "> Age: </label> <input type= "text" id= "Col3"/> <label for= "Col4" > Birthplace: </label> <input type= "text" ID = "Col4"/> <input type= "button" value= "Add" id= "Btnadd"/> </FIELDSET> <fieldset> <legend> Find </legend> <label for= "Col9" > Find content: </label> <script type= "text/ JavaScript "> var options = [" <option value= "0" selected> name </option> "," <option value= "1" > Sex </ Option> "," <option value= "2" > Age </option> "," <option value= "3" > Birthplace </option> "]; document.write ("<select name=" Selectcol "id=" Selectcol ">" + Options.join ("") + "</select>"); </script> <input type= "text" id= "Col9"/> <input type= "button" value= "Find" id= "Btnfind"/> </ fieldset> </fieldset> <br/> <fieldset id= "Tabledata" > <legend> tabular Data </legend> </ fieldset> <input type= "button" value= "delete" id= "Btndelete"/> "<input type=" button "value=" Update "id=" Btnupdate "/ > <input type= "button" value= "Show All" id= "Btnselectall"/> </body> </html> |
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