如何模拟按键按键？

问题描述

我有一个网页，其中javascript例程将表格交换为清除屏幕并开始一组新问题。清除屏幕后，文本框或下拉菜单只需通过ID获取元素即可获得焦点，以.focus（）结尾。没问题。但是，如果屏幕上的第一个对象是单选按钮，则除非按下Tab键，否则它将不会接受焦点。如何模拟Tab键按下以使radiobutton可以获得焦点？

解决方案

I have a webpage where a javascript routine swaps tables to "clear" the screen and start a new group of questions. After the screen is cleared a textbox or a drop-down menu can receive focus by simply getting the element by ID, ending in .focus(). No problem. However, if the first object on a screen is a radiobutton it will not accept focus unless there is a tab key press. How can I simulate a tab key press so the radiobutton can receive focus?

解决方案

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