Json and mit app inventor

Hi community,
actually i wanted to make a chat app but not using the components of mit app inventor but using json and js
what i want is that when someone enter the message in the textbox1 and presses the send button the json should send the prompt to the web and later the prompt goes to the website and posts the message which we can view on a webviwer , How can i do all , please help!!!!

Suggest you do the whole thing in html/JavaScript. Research chat apps in relevant forums

This might be a little difficult without using the MIT app inventor components. As TIMAI2 said, you might be better off doing the project in html/JavaScript. What is your reason for not wanting to use MIT app inventor components?