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今天在cognos中第一次需要用到JS,主要是报表页面展示的时候是可能得到如下的数据
,我需要对其中类型中有金额字样的,后面的数值,精确2位小数;有百分比字样的,数值显示成百分比。如下。
我先尝试了自己写一段HTML代码,对表格的数据进行格式化。
<html>
<head>
<script type="text/javascript">
function getInnerHTML()
{
alert(document.getElementById("mytable").innerHTML);
}
window.onload=function(){
formatMoney();
}
function formatMoney(){
var fisrTd = document.getElementsByTagName("td");
var i=0;
for(i=0;i<fisrTd.length;i=i+2){
if(fisrTd[i].innerHTML.indexOf("百分比")>=0){
alert(fisrTd[i].innerHTML)
fisrTd[i+1].innerHTML=accMul(fisrTd[i+1].innerHTML,100)+"%"
}
if(fisrTd[i].innerHTML.indexOf("金额")>=0){
alert(fisrTd[i].innerHTML)
fisrTd[i+1].innerHTML=outputmoney(fisrTd[i+1].innerHTML)
}
}
}
//乘法函数,用来得到精确的乘法结果
//说明:javascript的乘法结果会有误差,在两个浮点数相乘的时候会比较明显。这个函数返回较为精确的乘法结果。
//调用:accMul(arg1,arg2)
//返回值:arg1乘以 arg2的精确结果
function accMul(arg1,arg2)
{
var m=0,s1=arg1.toString(),s2=arg2.toString();
try{m+=s1.split(".")[1].length}catch(e){}
try{m+=s2.split(".")[1].length}catch(e){}
return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m)
}
function outputmoney(number) {
number = number.replace(/,/g, "");
if(isNaN(number) || number == "")
return "";
number = Math.round(number * 100) / 100;
if (number < 0)
return ‘-‘ + outputdollars(Math.floor(Math.abs(number) - 0) + ‘‘) + outputcents(Math.abs(number) - 0);
else
return outputdollars(Math.floor(number - 0) + ‘‘) + outputcents(number - 0);
}
//格式化金额
function outputdollars(number) {
if (number.length <= 3)
return (number == ‘‘ ? ‘0‘ : number);
else {
var mod = number.length % 3;
var output = (mod == 0 ? ‘‘ : (number.substring(0, mod)));
for (i = 0; i < Math.floor(number.length / 3); i++) {
if ((mod == 0) && (i == 0))
output += number.substring(mod + 3 * i, mod + 3 * i + 3);
else
output += ‘,‘ + number.substring(mod + 3 * i, mod + 3 * i + 3);
}
return (output);
}
}
function outputcents(amount) {
amount = Math.round(((amount) - Math.floor(amount)) * 100);
return (amount < 10 ? ‘.0‘ + amount : ‘.‘ + amount);
}
</script>
</head>
<body>
<table border="1" id="mytable">
<tr id="tr1">
<td >类型</td>
<td>数值</td>
</tr>
<tr id="tr2">
<td >金额</td>
<td>10.1</td>
</tr>
<tr id="tr3">
<td >人数</td>
<td>100</td>
</tr>
<tr id="tr4">
<td >百分比</td>
<td>1</td>
</tr>
<tr id="tr5">
<td >总金额</td>
<td>12.12563</td>
</tr>
</table>
<input type="button" onclick="getInnerHTML()"
value="Alert innerHTML of table row" />
</body>
</html>
然后在cognos中,先给TABLE嵌套一个DIV,然后通过DIV的ID,获取到表格,再根据用以上JS代码去实现我需要的功能:
<script type="text/javascript">
setTimeout(formatMoney,20)
function formatMoney(){
var tabObj = document.getElementById("div1");
var fisrTd = tabObj.firstChild.getElementsByTagName("td")
var i=0;
for(i=0;i<fisrTd.length;i=i+1){
if(fisrTd[i].innerHTML.indexOf("率")>=0){
//alert(fisrTd[i].innerText)
fisrTd[i+1].innerText=accMul(fisrTd[i+1].innerText,100)+"%"
}
if(fisrTd[i].innerHTML.indexOf("占比")>=0){
//alert(fisrTd[i].innerText)
fisrTd[i+1].innerText=accMul(fisrTd[i+1].innerText,100)+"%"
}
if(fisrTd[i].innerHTML.indexOf("额")>=0){
//alert(fisrTd[i].innerText)
fisrTd[i+1].innerText=outputmoney(fisrTd[i+1].innerText)
}
}
}
/* 乘法函数,用来得到精确的乘法结果
说明:javascript的乘法结果会有误差,在两个浮点数相乘的时候会比较明显。这个函数返回较为精确的乘法结果。
调用:accMul(arg1,arg2)
返回值:arg1乘以 arg2的精确结果
*/
function accMul(arg1,arg2)
{
var m=0,s1=arg1.toString(),s2=arg2.toString();
try{m+=s1.split(".")[1].length}catch(e){}
try{m+=s2.split(".")[1].length}catch(e){}
return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m)
}
function outputmoney(number) {
number = number.replace(/,/g, "");
if(isNaN(number) || number == "")return "";
number = Math.round(number * 100) / 100;
if (number < 0)
return ‘-‘ + outputdollars(Math.floor(Math.abs(number) - 0) + ‘‘) + outputcents(Math.abs(number) - 0);
else
return outputdollars(Math.floor(number - 0) + ‘‘) + outputcents(number - 0);
}
/*格式化金额
*/
function outputdollars(number) {
if (number.length <= 3)
return (number == ‘‘ ? ‘0‘ : number);
else {
var mod = number.length % 3;
var output = (mod == 0 ? ‘‘ : (number.substring(0, mod)));
for (i = 0; i < Math.floor(number.length / 3); i++) {
if ((mod == 0) && (i == 0))
output += number.substring(mod + 3 * i, mod + 3 * i + 3);
else
output += ‘,‘ + number.substring(mod + 3 * i, mod + 3 * i + 3);
}
return (output);
}
}
function outputcents(amount) {
amount = Math.round(((amount) - Math.floor(amount)) * 100);
return (amount < 10 ? ‘.0‘ + amount : ‘.‘ + amount);
}
</script>
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原文地址:http://www.cnblogs.com/longjshz/p/4655074.html