How to input variable inside regex javascript?

JavaScript Design Pattern for Text Input

• I'm writing a simple game in JavaScrip that needs to occasionally ask the user for text input. I don't want to use the JavaScript prompt() method. I want to display an HTML textbox and have my JavaScript code display the textbox and wait for the user to fill it out and hit ENTER.This seems like the sort of pattern that someone would have devised, but my Google-Fu is weak on this. Any help would be appeciated. Not looking for external libraries if they can be avoided, although JQuery would be acceptable. Thanks!

• Answer:

  <input type="text" id="textbox" value="default"/>...var textbox = document.getElementById("textbox");textbox.onChange = function(){ /* do stuff with text here */ textbox.style.display = "none";};function thingThatAsksUserForInput() { /* other stuff ... */ textbox.style.display = "";}