Welcome to a quick tutorial on how to populate an HTML dropdown list with AJAX and JSON. Need to dynamically load the dropdown options from the server? No problem, it is actually a simple process – Read on for the example! ⓘ I have included a zip file with all the source code at the …
Populate Dropdown With AJAX JSON (Simple Example) Read More »
Welcome to a tutorial on how to read an Excel file into an array or JSON in Javascript. Yes, that is right. We can actually read Excel files in client-side Javascript, without having to do all those “upload to a temp folder on the server then read the Excel file”. Read on for the example! …
Welcome to a tutorial on how to create an Excel file in Javascript. Yes, you read that right. We are referring to “browser Javascript”, and not the server-side NodeJS. The dark days have passed and it is actually possible to generate Excel files using client-side Javascript – Read on for the example! ⓘ I have …
Create Excel File In Javascript (Step-By-Step Example) Read More »
Welcome to a tutorial on how to export data from a MySQL database to an Excel file in NodeJS. So you need to generate a report from the database, or create a list? Well, it is actually a simple “fetch from database and write to Excel file” process – Read on for the example! ⓘ …
Welcome to a tutorial on how to import an Excel spreadsheet with MySQL and NodeJS. So want to “put an Excel file into the database”? Well, it’s actually a simple process of “read the Excel file” and “insert into database”. Read on for the example! ⓘ I have included a zip file with all the …
Import Excel Into Database With NodeJS MySQL (Simple Example) Read More »
Welcome to a tutorial on how to read a CSV file and display it in an HTML table in Javascript. Need to display a CSV as an HTML table before uploading it to the server? Or have a CSV file on the server that needs to be displayed in an HTML table? Well, it is …
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Welcome to a tutorial on how to crop images in NodeJS. In client-side (browser) Javascript, we have access to the Canvas API and can do all sorts of image yoga with it. But just how do we crop an image in NodeJS then? We can install and use the sharp image library to easily crop …
Welcome to a tutorial on how to disable scrolling in Javascript. Need to disable scrolling on the page? Let the user fill something up before moving on? Sadly, there are no native implementations to disable scrolling in Javascript; We can only “simulate” a scroll lock using various alternatives. The common methods to disable scrolling in …
Welcome to a tutorial on how to hide Javascript code from the client. Have some security concerns and don’t want the users to see your source code? Or maybe you don’t want to release the source code to a client who is refusing to pay? It is impossible to totally hide the Javascript source code, …
3 Ways To Hide Javascript Code From Client (Simple Examples) Read More »
Welcome to a tutorial and example on how to send a Javascript fetch request with GET query parameters. New to the fetch API, and trying to pass in some query parameters? To send GET query parameters with Javascript fetch, simply create a new URL object and append the search parameters: var data = { “KEY” …
Javascript Fetch With GET Query Params (Quick Examples) Read More »
