B/S开发常用JavaScript技术(5)

this.rowindex=this.rowindex Step;
}
else
{
if (this.rowindex Step<0){
this.rowindex= 0;
return;
}
if (this.rowindex Step>this.rows-1){
this.rowindex= this.rows-1;
return;
}
}
}
}


function getfielddata(Field){
var colindex=-1;
var i=0;
if (typeof(Field) == "number"){
colindex=Field;
}
else
{
f or (i=0;i<this.cols && this.rowindex<this.rows ;i ){
if (this.TableData[0][i]==Field){
colindex=i;
break;
}
}
}
if (colindex!=-1) {
return this.TableData[this.rowindex][colindex];
}

}



function s ort_desc(){//降序
var colindex=-1;
var highindex=-1;
desc_array=new Array();
var i,j;
f or (n=0; n<arguments.length; n ){
Field=arguments[arguments.length-1-n];
f or (i=0;i<this.cols;i ){
if (this.TableData[0][i]==Field){
colindex=i;
break;
}
}
if ( colindex==-1 )
return;
else
{
desc_array[0]=this.TableData[0];
f or(i=1;i<this.rows;i ){
desc_array[i]=this.TableData[1];
highindex=1;
f or(j=1;j<this.TableData.length;j ){
if (desc_array[i][colindex]<this.TableData[j][colindex]){
desc_array[i]=this.TableData[j];
highindex=j;
}

}
if (highindex!=-1)
this.TableData=this.TableData.slice(0,highindex).concat(this.TableData.slice(highindex 1,this.TableData.length));
}
}


this.TableData=desc_array;
}
return;
}



function s ort_asc(){//升序
var colindex=-1;
var highindex=-1;
var i,j;
f or (n=0; n<arguments.length; n ){
asc_array=new Array();
Field=arguments[arguments.length-1-n];
f or (i=0;i<this.cols;i ){
if (this.TableData[0][i]==Field){
colindex=i;
break;
}
}
if ( colindex==-1 )
return;
else
{
asc_array[0]=this.TableData[0];
f or(i=1;i<this.rows;i ){
asc_array[i]=this.TableData[1];
highindex=1;
f or(j=1;j<this.TableData.length;j ){//找出最小的列值
if (asc_array[i][colindex]>this.TableData[j][colindex]){
asc_array[i]=this.TableData[j];
highindex=j;

}

}
if (highindex!=-1)
this.TableData=this.TableData.slice(0,highindex).concat(this.TableData.slice(highindex 1,this.TableData.length));

}
}


this.TableData=asc_array;
}
return;
}



function getData(Field,FieldValue){
var colindex=-1;
var i,j;

GetData=new Array();
if (typeof(Field)=="undefined" || typeof(FieldValue)=="undefined" ){
return this.TableData;
}

f or(j=0;j<this.cols;j ){
if (this.TableData[0][j]==Field){
colindex=j;
}
}
if (colindex!=-1){

f or(i=1;i<this.rows;i ){
if (this.TableData[i][colindex]==FieldValue){
GetData[i]=new Array();
GetData[i]=this.TableData[i];
}
}
}
return GetData;
}
function DeletE(){
this.TableData=this.TableData.slice(0,this.rowindex).concat(this.TableData.slice(this.rowindex 1,this.TableData.length));
this.rows=this.TableData.length;
return;
}
function updateField(Field,FieldValue){
var colindex=-1;
var i=0;
if (typeof(Field) == "number"){
colindex=Field;
}
else
{
f or (i=0;i<this.cols && this.rowindex<this.rows ;i ){
if (this.TableData[0][i]==Field){
colindex=i;
break;
}
}
}
if (colindex!=-1) {
this.TableData[this.rowindex][colindex]=FieldValue;
}


}
function movefirst(){
this.rowindex=0;
}
function movelast(){
this.rowindex=this.rows-1;
}
function String.prototype.Trim() {return this.replace(/(^\s*)|(\s*$)/g,"");}
GetTableData.prototype.MoveNext = movenext;
GetTableData.prototype.GetFieldData = getfielddata;
GetTableData.prototype.S ort_asc = s ort_asc;
GetTableData.prototype.S ort_desc = s ort_desc;
GetTableData.prototype.GetData = getData;
GetTableData.prototype.Delete = DeletE;
GetTableData.prototype.UpdateField = updateField;
GetTableData.prototype.MoveFirst = movefirst;

具体的例子：http://202.119.73.208/NetEAn/com/test/jsprint.htm

在每个文本框的onblur事件中调用校验代码,并且每个文本框中onKeyDown事件中写一个enter转tab函数

//回车键换为tab
function enterToTab()
{
if(event.srcElement.type != 'button' && event.srcElement.type != 'textarea'
&& event.keyCode == 13)
{
event.keyCode = 9;

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