Simple Single Page Application, Frontend Development Project, maybe using jQuery EasyUI DataGrid(clientpagination)

Simple Single Page Application, Frontend Development Project, maybe using jQuery EasyUI DataGrid(clientpagination) and CheckBox Tree(Tri-State Checkbox), As the photo shows: 1. User write some words in the text line, and check some checkbox in the left checkbox tree, then click "Start". 2. DataGrid displays data which loaded remotely. 3. Now we have a already production-running RESTful backend API, returns JSON format result, the API specification will be provided later. Well, say ajax with json format. 4. Another simple login page is needed to be developed before showing this main application screen, just a logo photo, username filed, a password field, a checkbox of "remember password" and a checkbox of "auto login". 5. As you know, the application in the screenshot picture is developed using Qt, and we simply doesn't like the UI so want to change the frontend programming language to Web-based technologies like JavaScript, jQuery, BootStrap etc, but if you are familiar with other frontend framework, it may be all right too, we found the jQuery EasyUI DataGrid implements the data table requirement, and the jQuery EasyUI CheckBox Tree implements the checkbox tree requirement. 6. The advanced button shows more text input fileds, these texts is additional parameters in the API. The Export button sends request to server and get returned files, the Load button is ignored. [login to view URL] result records is about 10K~100K, and the DataGrid displays 1K records maximum and 100 by default, otherwise user need to turn the pages. The data records is being increase after user click "Start" and send keywords, so the program need to check updates/states periodically, say every 10 seconds, until the response says the task is done/end. 8. The default data source is json response with datas, which may have a performance issue, so we think if you can use chrome's WebSQL as the data source of the displayed table. The app's user all uses chrome browser so WebSQL(Sqlite) is supported. Detailed application UI logic specification and API specification will be provided later. Expected delivery day is within 3 days, 5 days is also acceptable. We're sorry to say we don't have much budget on this project,we are poor startup too.. so please kindly give a offer :) Regards,