Twitter



Comments

Post a Comment

Popular posts from this blog

how to save images with angular nodejs

 There are two ways to save images. 1) store image in database by converting it to binary format. 2) copy image in your project folder then save image path in table. ------- 1st way with front end angular------ pass uploaded file in "handleFileInput" function.  saveImage ( files :  FileList ) {    var   file : File  =  files . item ( 0 );    var   myReader : FileReader  =  new   FileReader ();    myReader . onloadend  = ( e )  =>  {      this . image  =  myReader . result ;   }    myReader . readAsDataURL ( file );    //convert to base64 ends } now you will get  binary format image in this.image variable. save this converted image directly to database through API. ------2nd way with api nodejs------ we can use "multer" to copy file in project folder. const   multer  =  require ( 'multer'...
Read more

How to export data to excel sheet with colors and style in angular.

 There are two most popular library for javascript to export data with excel sheet. 1) xlsx library 2) exceljs library If you would like to export simple data without changing its style then xlsx is perfact, but if you would like to change style before export then exceljs is perfect for JavaScript frameworks. Lets create an example with exceljs library to export data by changing style and colors for angular. Step 1: Install "exceljs" library                npm install exceljs Step 2: Install "file-saver" library to save excel file.                npm install file-saver Step 3: Import "exceljs" and "file-saver" library to your component. import * as ExcelJS from 'exceljs/dist/exceljs.min.js' ; import { saveAs } from 'file-saver' ; Step 4: Now create function in your component to export Data.   exportExcel ()   {     const workbook = new ExcelJS . Workbook ()...
Read more