模拟读取CSV数据文件，查找标题行和数据行
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
</head>
<body>
<script>
var lineData=new Array(
"",
"a1,22,33,44,55,66,77,88,99,00,11,22",
"a2,22,33,44,55,66,77,88,99,00,11,22,33",
"",
"",
"a3,22,33,44,55,66,77,88,99,00,11,22",
"a4,22,33,44,55,66,77,88,99,00,11,22",
"a5,22,33,44,55,66,77,88,99,00,11,22,33",
"a6,22,33,44,55,66,77,88,99,00,11,22,33");
function getHeadLine(lineData){
var retHeadLine = 0;
for (i = 0; i < lineData.length -1 ; i++)
{
if ( lineData[i] == "" )
{
continue;
}
var objLines = lineData[i].split(",");
if ( objLines.length == 13 )
{
retHeadLine = i;
break;
}
}
alert(retHeadLine);
return retHeadLine;
}
function getDataLine(lineData,iStart){
var retHeadLine = 0;
for (i = iStart; i < lineData.length -1 ; i++)
{
if ( lineData[i] == "" )
{
continue;
}
var objLines = lineData[i].split(",");
if ( objLines.length == 13 )
{
retHeadLine = i;
break;
}
}
alert(retHeadLine);
return retHeadLine;
}
</script>
<form method="post" action="">
<input type="button" value="getHeadLine" onclick="return getDataLine(lineData,0);">
<input type="button" value="getDataLine" onclick="return getDataLine(lineData,(2+1));">
</form>
</body>
</html>