用纯Javascript解析CSV文件
我正在尝试创建一个相当简单的Webapp,使处理记录更容易 启动CSV文件如下所示:用纯Javascript解析CSV文件,javascript,arrays,parsing,csv,Javascript,Arrays,Parsing,Csv,我正在尝试创建一个相当简单的Webapp,使处理记录更容易 启动CSV文件如下所示: HeaderA,HeaderB,HeaderC UserA-first,UserA-last,UserA-Active UserB-first,UserB-last,UserB-Active UserC-first,UserC-last,UserC-Active 我想获取这些数据并创建以下数组 Var ColumnA = ["HeaderA", "UserA-first", "UserB-first", "U
HeaderA,HeaderB,HeaderC
UserA-first,UserA-last,UserA-Active
UserB-first,UserB-last,UserB-Active
UserC-first,UserC-last,UserC-Active
我想获取这些数据并创建以下数组
Var ColumnA = ["HeaderA", "UserA-first", "UserB-first", "UserC-first"];
Var ColumnB = ["HeaderB", "UserA-last", "UserB-last", "UserC-last"];
Var ColumnC = ["HeaderC", "UserA-Active", "UserB-Active", "UserC-Active"];
在数组中有了它们之后,我有信心可以按照我想要的方式迭代它们
我遇到的问题是:
如何解析第三列后没有逗号的CSV文件
如何在没有外部库的情况下使用纯Javascript实现这一点
这是我关于堆栈溢出的第一个问题,所以请对我可能犯的任何错误保持温和:kei将您链接到一篇文章,这是您的解决方案 只需包含此函数并在数据上使用它
function CSVToArray( strData, strDelimiter ){
// Check to see if the delimiter is defined. If not,
// then default to comma.
strDelimiter = (strDelimiter || ",");
// Create a regular expression to parse the CSV values.
var objPattern = new RegExp(
(
// Delimiters.
"(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +
// Quoted fields.
"(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +
// Standard fields.
"([^\"\\" + strDelimiter + "\\r\\n]*))"
),
"gi"
);
// Create an array to hold our data. Give the array
// a default empty first row.
var arrData = [[]];
// Create an array to hold our individual pattern
// matching groups.
var arrMatches = null;
// Keep looping over the regular expression matches
// until we can no longer find a match.
while (arrMatches = objPattern.exec( strData )){
// Get the delimiter that was found.
var strMatchedDelimiter = arrMatches[ 1 ];
// Check to see if the given delimiter has a length
// (is not the start of string) and if it matches
// field delimiter. If id does not, then we know
// that this delimiter is a row delimiter.
if (
strMatchedDelimiter.length &&
(strMatchedDelimiter != strDelimiter)
){
// Since we have reached a new row of data,
// add an empty row to our data array.
arrData.push( [] );
}
// Now that we have our delimiter out of the way,
// let's check to see which kind of value we
// captured (quoted or unquoted).
if (arrMatches[ 2 ]){
// We found a quoted value. When we capture
// this value, unescape any double quotes.
var strMatchedValue = arrMatches[ 2 ].replace(
new RegExp( "\"\"", "g" ),
"\""
);
} else {
// We found a non-quoted value.
var strMatchedValue = arrMatches[ 3 ];
}
// Now that we have our value string, let's add
// it to the data array.
arrData[ arrData.length - 1 ].push( strMatchedValue );
}
// Return the parsed data.
return( arrData );
}
如果需要不同的数组结构,您可能需要对函数进行一些调整,但最终这就是您要寻找的函数到目前为止您尝试了什么?通常情况下,你的问题应该展示你的尝试,并在你的问题解决方案上寻求指针——否则人们会认为你在要求他们做你的工作。string.split但我无法绕过第三列后面缺少的逗号……所以你不想使用jquery?@user3657152你应该在你的问题中编辑你的代码尝试。到目前为止,我我曾尝试在javascript中使用string.split方法,但是如果我使用逗号作为分隔符,它将ColumnC和ColumnA组合在一起。此外,在我的示例中,我无意中在列之间添加了空格。有没有办法将换行符用作String.split的分隔符?