如何在html文件中永久地动态保存数据？

Ok so I am trying to make a program that allows teachers to edit/design a test and for students to take it. I made dropdown menues to select type of question and the category (history, english, etc.) and have textboxes to receive the question text. My question though is how to save this text and selections permanently. My initial thought was to change the contents of a js file variable, but javascript is client side. What is the easiest option as I need this quickly? Please just plain javascript/html, no jquery or jfiddle. Please explain in simple words :). I am no pro. PHP is ok but I do not know it so I will need it to be clear. If you could help, that would be fantastic as I and another guy have not found a simple solution ( at least to our minds).Ok so I am trying to make a program that allows