《JavaScript進階程式設計》閱讀筆記（十九）：表格排序

排序代碼

function SortTable(sTableID, iCol, sDataType){    this.oTable=document.getElementById(sTableID);    this.oTBody=this.oTable.tBodies[0];    this.colDataRows=this.oTBody.rows;    this.aTRs=[];    this.iCol=iCol;    this.sDataType=sDataType;}SortTable.prototype={    convert:function(sValue, sDataType){        switch(sDataType){            case "int":                return parseInt(sValue);            case "float":                return parseFloat(sValue);            case "date":                return new Date(sValue);            default:                return sValue.toString();        }    },    generateCompareTRs:function(iCol, sDataType, that){        return function compareTRs(oTR1,oTR2){                    var vValue1= that.convert(oTR1.cells[iCol].firstChild.nodeValue, sDataType),                        vValue2= that.convert(oTR2.cells[iCol].firstChild.nodeValue, sDataType);                    if(vValue1 < vValue2){                        return -1;                    } else if(vValue1 > vValue2){                        return 1;                    } else{                        return 0;                    }               };    },    sort:function(){        for(var i=0,l=this.colDataRows.length;i<l;i++){            this.aTRs.push(this.colDataRows[i]);        }        if(this.oTable.sortCol === this.iCol){            this.aTRs.reverse();        } else {            this.aTRs.sort(this.generateCompareTRs(this.iCol, this.sDataType, this));        }        var oFragment=document.createDocumentFragment();        for(var i=0,l=this.aTRs.length;i<l;i++){            oFragment.appendChild(this.aTRs[i]);        }        this.oTBody.appendChild(oFragment);        this.oTable.sortCol = this.iCol;    }}

調用樣本

function bindSortTable(sTableID, iCol, sDataType){    var table=document.getElementById(sTableID),        ftr=table.tHead.rows[0],        tds=ftr.cells;    if(tds[iCol]){        tds[iCol].onclick=function(){            var sortTable=new SortTable(sTableID, iCol, sDataType);            sortTable.sort();        }    }}window.onload=function(){    bindSortTable("tblSort",0);    bindSortTable("tblSort",1);    bindSortTable("tblSort",2,"int");    bindSortTable("tblSort",3,"float");    bindSortTable("tblSort",4,"date");}

將table中的td順序顛倒

function reverseTD(tbid){    var table=document.getElementById(tbid),        tbody=table.tBodies[0],        trs=tbody.rows,        cols=[];    for(var i=0,j=trs.length;i<j;i++){        cols = trs[i].cells;        trs[i]=document.createElement("tr");        for(var m=cols.length-1;m>=0;m--){            trs[i].appendChild(cols[m]);        }    }}//TestreverseTD("tableid");