<!DOCTYPE html>charset="utf-8"W3Cschool教程(w3cschool.cn)onmouseover="mOver(this)" onmouseout="mOut(this)" style="background-color:#D94A38;width:120px;height:20px;padding:40px;"Mouse Over Mefunction mOver(obj){obj.innerHTML="Thank You"}function mOut(obj){obj.innerHTML="Mouse Over Me"}