Put value of textbox into another textbox
问题 I have a start date which is put in a textbox by the user trough a jquery date picker. I also have an end date textbox which I want to fill with the start date value when the user changed the value of the start date. So I was thinking of doing a JavaScript and than a when textbox has changed enter value into end date textbox but I don't know how this would be done. Thank you guys for helping since I am new to JavaScript. 回答1: Here is the working code for what you have asked. <!doctype html>