js实现ext grid导出到excel

将grid作为参数传入以下函数即可:

function outputAddress(grid){

    try {
        var xls = new ActiveXObject("Excel.Application");
    } 
    catch (e) {
        alert("要打印该表，您必须安装Excel电子表格软件，同时浏览器须使用“ActiveX 控件”，您的浏览器须允许执行控件。 请点击【帮助】了解浏览器设置方法！");
        //return "";
    }
	
    xls.visible = true; //设置excel为可见 
    var xlBook = xls.Workbooks.Add;
    var xlSheet = xlBook.Worksheets(1);
    
    var cm = grid.getColumnModel();
    var colCount = cm.getColumnCount();
    var temp_obj = [];
    //只下载没有隐藏的列(isHidden()为true表示隐藏,其他都为显示) 
    //临时数组,存放所有当前显示列的下标 
    for (i = 1; i < colCount; i++) {
        if (cm.isHidden(i) == true) {
        }
        else {
            temp_obj.push(i);
        }
    }
    for (i = 1; i <= temp_obj.length - 2; i++) {
        //显示列的列标题 
        xlSheet.Cells(1, i).Value = cm.getColumnHeader(temp_obj[i - 1]);
    }
    var store = grid.getStore();
    var recordCount = store.getCount();
    var view = grid.getView();
    for (i = 1; i <= recordCount; i++) {
        for (j = 1; j <= temp_obj.length; j++) {
            //EXCEL数据从第二行开始,故row = i + 1; 
            xlSheet.Cells(i + 1, j).Value = view.getCell(i - 1, temp_obj[j - 1]).innerText;
        }
    }
    xlSheet.Columns.AutoFit;
    xls.ActiveWindow.Zoom = 75
    xls.UserControl = true; //很重要,不能省略,不然会出问题 意思是excel交由用户控制 
    xls = null;
    xlBook = null;
    xlSheet = null;
}