<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>文本框回车</title><script type="text/script" src="js/jquery-3.1.1.min.js"></script><script type="text/javascript">function test() {alert(1);}</script></head><body><div><input type="password" onkeydown="if(event.keyCode==13){btn.click()}"><button id="btn" onclick="test()"></button></div></body></html>
注：需要引入jQuery.js
文本框回车后效果如下：
