【转载】JS导出CSV文件

转自：http://www.cnblogs.com/dengnan/p/3990211.html

通过自己实际测试有以下几种方法

方法一通过a标签实现，把要导出的数据用“\n”和“,”拼接成一个字符串，然后把字符串放到href中，这种方法只支持chrome，firefox等非ie浏览器

html页面代码如下

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="content-type" content="text/html; charset=utf-8">

        <meta name="author" content="oscar999">

        <title>导出CSV文件</title>

        <script>

        function exportCsv(obj){

            //title ["","",""]

            var title = obj.title;

            //titleForKey ["","",""]

            var titleForKey = obj.titleForKey;

            var data = obj.data;

            var str = [];

            str.push(obj.title.join(",")+"\n");

            for(var i=0;i<data.length;i++){

                var temp = [];

                for(var j=0;j<titleForKey.length;j++){

                    temp.push(data[i][titleForKey[j]]);

             }

             str.push(temp.join(",")+"\n");

         }

         var uri = 'data:text/csv;charset=utf-8,' + encodeURIComponent(str.join(""));

         var downloadLink = document.createElement("a");

         downloadLink.href = uri;

         downloadLink.download = "export.csv";

         document.body.appendChild(downloadLink);

         downloadLink.click();

         document.body.removeChild(downloadLink);

      }

      window.onload = function(){

          document.getElementById("test").onclick = function(){

              exportCsv({

                  title:["第一列","第二列"],

                  titleForKey:["num1","num2"],

                  data:[

                     {

                      num1:"123",

                      num2:"fff"

                     },{

                      num1:"123",

                      num2:"fff"

                     },{

                      num1:"123",

                      num2:"fff"

                     }]

              });

         }

      }

      </script>

      </head>

<body>

  <a id="test" href="javascript:;">导出</a>

</body>

</html>

第二种方法通过ActiveXObject("Excel.Application")实现，这种方法只支持ie浏览器

html页面代码如下

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>IE导出CSV</title>

<script>

window.onload = function(){

    function exportCsv(){

        //创建AX对象excel

        var oXL = new ActiveXObject("Excel.Application");

        //获取workbook对象

        var oWB = oXL.Workbooks.Add();

        //激活当前sheet

        var oSheet = oWB.ActiveSheet;

        var Lenr = [["标题一","标题二","标题三"],["4","5","6"],["1","2","3"]];

        for (i = 0; i < Lenr.length; i++) {

            for (j = 0; j < Lenr[i].length; j++) {

                oSheet.Cells(i + 1, j + 1).value = Lenr[i][j];

            }

        }

        //设置excel可见属性

        oXL.Visible = true;

    }

    document.getElementById("J_export").onclick = function(){

        exportCsv();

    }

}

</script>

</head>

<body>

   <a href="javascript:;" id="J_export">导出</a>

</body>

</html>

第三种方法也是目前项目中正在使用的

通过使用FileSave.js实现FileSave.js插件https://github.com/eligrey/FileSaver.js/

html页面代码如下

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>IE导出CSV</title>

<script src="FileSaver.js"></script>

<script>

window.onload = function(){

    function exportCsv2(){

        //Excel打开后中文乱码添加如下字符串解决

        var exportContent = "\uFEFF";

        var blob = new Blob([exportContent+"标题,标题,标题\n1,2,3\n4,5,6"],{type: "text/plain;charset=utf-8"});

        saveAs(blob, "hello world.csv");

    }

    document.getElementById("J_export").onclick = function(){

        exportCsv2();

    }

}

</script>

</head>

<body>

    <a href="javascript:;" id="J_export">导出</a>

</body>

</html>

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【转载】JS导出CSV文件

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