font color="red" face ="宋体" size = “7>我是字体标签 </font>
2.iframe
<iframe src="dome2.html" with ="2000" height ="1000" name ="abc"></iframe><br/><ul><li><a href="dome3.html" target="abc">dome2</a></li></ul>
3.函数定义
<title>Title</title><meta charset="UTF-8"><script type ="text/javascript">
function fun(){alert("无参函数被调用了");}
function fun2(a,b){alert("有参函数被调用了 a= "+a +"b="+ b );}fun2(12,"abc");</script>2.<title>Title</title><meta charset="UTF-8"><script type ="text/javascript">
var fun =function(){
alert ("无参函数");}
var fun2 =function(a,b){alert("有参函数a = "+a+",b="+b);}
var fun3 =function(num1,num2){return num1+num2;}alert(fun3(100,200));</script>
4.onclick
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script type="text/javascript">
function onlickfun(){alert("静态注册");}
window.onload =function(){
var obj = document.getElementById("bt001");// alert(obj);
obj.onclick =function(){alert("动态注册");}}</script></head><body><button onclick="onlickfun();">按钮1</button><button id ="bt001">按钮2</button></body></html>
5.onblur失去焦点事件
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script type="text/javascript">
function onblurfun(){
console.log("静态注册失去焦点事件");}
window.onload =function(){
var passwordobj =document.getElementById("password");//alert(passwordobj);
passwordobj.onblur =function(){
console.log("动态注册失去焦点");}}</script></head><body>
用户名：<input type="text" onblur="onblurfun();"><br/>
密码：<input id ="password" type="text"><br/></body></html>
6.onchange事件
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script type="text/javascript">
function onchangefun(){alert("女神已经改变了");}
window.onload =function(){
var passobj = document.getElementById("001");
passobj.onchange =function(){alert("男神已经改变了");}}</script></head><body><select onchange="onchangefun();"><option>女神</option><option>a</option><option>b</option><option>c</option></select><select id ="001"><option>男神</option><option>a</option><option>b</option><option>c</option></select></body></html>
7.onsubmit 表单提交事件
<!doctype html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title><script type="text/javascript">
function onsubmitfun(){alert("静态注册,发现不合法");returnfalse;}
window.onload =function(){
var forobj = document.getElementById("form01")
forobj.onsubmit =function(){alert("动态注册表发现不合法");returnfalse;}}</script></head><body><form action ="http://localhost:8080 " method="get" onsubmit="return onsubmitfun()"><input type ="submit" value="静态注册"/></form><form action ="http://localhost:8080 " id ="form01"><input type ="submit" value="动态注册"/></form></body></html>
8.正则表达式
<script type="text/javascript">
var patt =/\w/;
var str ="[[[]]]";alert(patt.test(str));</script>
9.验证效果
<!doctype html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title><script type="text/javascript">
function onclickFun(){
var usernameObj = document.getElementById("username");
var usernameText = usernameObj.value;
var patt =/^\w{5,12}$/;
var usernameSpanObj = document.getElementById("usernameSpan")if(patt.test(usernameText)){// alert("用户名合法");//usernameSpanObj.innerHTML = "用户名合法";
usernameSpanObj.innerHTML ="<img src = \"right.png\" width=\"18\" height=\"18\">";}else{//usernameSpanObj.innerHTML = "用户名不合法";
usernameSpanObj.innerHTML ="<img src = \"w1rong.png\" width=\"18\" height=\"18\">";}}</script></head><body>
用户名：<input type ="text" id ="username" value="wzg/"><span id ="usernameSpan" style ="color :red;"></span><button onclick="onclickFun()">校验</button></body></html>
