[Solved]-How can I make a graph with highcharts from csv file?-Highcharts

Look at this part:

jQuery.each(lines, function(lineNo, line) {
    var items = line;

    // header line containes categories
    if (lineNo == 0) {
      jQuery.each(items, function(itemNo, item) {

Do you see the mistake?? You are iterating over a string! You need to split each line. If your values in lines are separated by tabs, then you can simply do:

var items = line.split('\t');

See this jsFiddle.