jquery-indexeddb

by axemclion

axemclion / jquery-indexeddb

An IndexedDB Plugin for Jquery.

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Jquery Plugin for the IndexedDB API Build Status

IndexedDB is a database inside a browser to save and retrieve objects on the browser/client. The JQuery IndexedDB Plugin is a wrapper on the IndexedDB API for JQuery.

Links

  • Home page - http://nparashuram.com/jquery-indexeddb/index.html
  • Download the plugin - http://nparashuram.com/jquery-indexeddb/jquery.indexeddb.js
  • Sample application - http://nparashuram.com/jquery-indexeddb/example/index.html
  • API Documentation - https://github.com/axemclion/jquery-indexeddb/blob/gh-pages/docs/README.md

Summary

The Jquery IndexedDB Plugin brings to goodness of Jquery to the browser's native IndexedDB API. It supports method chaining, promises and smart defaults, enabling you to get more done with less code. It also abstracts out differences in browser implementations.

Code

The code written with the jQuery plugin is pretty simple. It looks something like

    $.indexeddb("BookShop-1").objectStore("BookList").openCursor().each(write); 

A typical operation using the IndexedDB API would involve using the request model, creating transactions, checking for existence of object store using error responses and exceptions and then finally getting to the part where the data is actually iterated over.

    var request = window.indexedDB.open("BookShop-1");
    request.onsuccess = function(event){
        var db = request.result;
        var transaction = db.transaction(["BookList"], IDBTransaction.READ_WRITE);
        var objectStore = transaction.objectStore("BookList");
        var request = DAO.objectStore.openCursor();
        request.onsuccess = function(event){
            var cursor = request.result;
            if (cursor) {
              write(cursor.key + "" + cursor.value);
              cursor["continue"]();                
            }
        };
    };

Read more about the API syntax in the documentation.

Building

Node is required to build this project.

  • npm insall -g grunt-cli
    # to install the grunt command line
  • npm install
    # to install all other dependencies from the package.json
  • Run one of the following grunt commands
    • grunt
      # to just minify, lint and build the source. Final file available in
      dist/
      folder
    • grunt dev
      # to start a web server. Navigate to
      http://127.0.0.1:8080/test/
      to run Qunit tests

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