<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script type="text/javascript">
// var newstr= new String("欢迎javascript");
// var newstr2="welcome javascript";
// var strlen=newstr2.length; //长度包括空格
// document.write(strlen);
var arr=new Array("张无忌","郭靖","东方不败","乔峰","令狐冲","完颜洪烈","杨过","韦小宝","金轮法王");
var twoname="";
var threename="";
var fourname="";
for (var i=0;i<arr.length;i++)
{
if(arr[i].length==2)
{
twoname+=arr[i]+",";
}
else if(arr[i].length==3)
{
threename+=arr[i]+",";
}
else if(arr[i].length==4)
{
fourname+=arr[i]+",";
}
}
document.write("二个字的人物："+twoname+"<br>");
document.write("三个字的人物："+threename+"<br>");
document.write("四个字的人物："+fourname+"<br>");
</script>
<br>
<br>
<h3>查找字符串</h3>
<script type="text/javascript">
var str1="四是四，十是十，十四是十四，四十是四十";
var position=0;
var num=-1;
var index=0;
while(position != -1)
{
position=str1.indexOf("四",index);
num+=1;
index=position+1;
}
document.write("定义的字符串："+str1+"<br>");
document.write("字符串中有："+num+"个四");
</script>
<br>
<br>
<script type="text/javascript">
var str2="JavaScript";
var str3=str2.lastIndexOf("a");
document.write("a最后出现的位置："+str3+"<br>");
</script>
<br>
<br>
<script type="text/javascript">
var str4="JavaScript";
var str5=str4.slice(2,4);//从第二位开始截取到第三位
document.write("截取后的字符串："+str5+"<br>");
</script>
<br>
<br>
<script type="text/javascript">
var str4="JavaScript";
var str5=str4.substr(2,4);//从第二位开始截取,长度为4
document.write("截取后的字符串："+str5+"<br>");
</script>
<br>
<br>
<script type="text/javascript">
var str4="JavaScript";
var str5=str4.substring(2,4);//从第二位开始截取到第三位
document.write("截取后的字符串："+str5+"<br>");
</script>
<br>
<br>
<h3>大写字母转换成小写字母</h3>
<script type="text/javascript">
var str4="JavaScript";
var str5=str4.toLowerCase(); //大写字母转换成小写字母
document.write("转换后的字符串："+str5+"<br>");
</script>
<br>
<br>
<h3>小写字母转换成大写字母</h3>
<script type="text/javascript">
var str4="JavaScript";
var str5=str4.toLocaleUpperCase(); //小写字母转换成大写字母
document.write("转换后的字符串："+str5+"<br>");
</script>
<br>
<br>
<h3>字符串连接</h3>
<script type="text/javascript">
var str1="时间";
var str2="就是";
var str3="生命";
var str4=str1.concat(str2,str3);
document.write("字符串连接："+str4+"<br>");
</script>
<br>
<br>
<h3>格式化字符串</h3>
<script type="text/javascript">
var str="你好JavaScript";
document.write("原字符串："+str+"<br>");
document.write("big："+str.big()+"<br>");
document.write("small："+str.small()+"<br>");
document.write("fontsize："+str.fontsize(6)+"<br>");
document.write("bold："+str.bold()+"<br>");
document.write("italics："+str.italics()+"<br>");
document.write("link："+str.link("https://www.baidu.com/")+"<br>");
document.write("strike："+str.strike()+"<br>");
document.write("fixed："+str.fixed()+"<br>");
document.write("fontcolor："+str.fontcolor("#ff00ff")+"<br>");
document.write("sub："+str.sub()+"<br>");
document.write("sup："+str.sup()+"<br>");
</script>
</body>
</html>
SL.rar （46个子文件） 
SL images 
backgroundpic.jpg 35KB 数组 
shuzu7.html 605B shuzu6.html 1009B shuzu2.html 3KB shuzu5.html 1KB shuzu1.html 635B shuzu4.html 3KB shuzu3.html 1KB shijian shijian3.html 2KB shijian4.html 799B shijian1.html 886B shijian2.html 591B shijian5.html 676B String string1.html 4KB string2.html 1KB string3.html 1KB 01 13 index.html 362B 12 hongse.jpg 416B lvse.jpg 367B index.html 1022B 14 
cat.png 359KB index.html 515B 05 index.html 2KB 07 index.html 2KB 15 index.html 433B 06 index.html 838B 10 index.html 591B 20 indxe.html 1KB 11 index.html 1KB 18 index.html 1KB 17 index.html 456B 04 index.html 274B 16 index.html 533B 19 index.html 436B 01 index.html 607B 09 index.html 758B 02 
index.js 29B index.html 202B 08 index.html 1KB 03 index.html 439B 02 duixiang3.html 435B duixiang5.html 2KB duixiang4.html 1KB duixiang.html 961B duixiang1.html 574B duixiang2.html 2KB资源评论
