<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD><BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
var strArray=new Array("1","2","3");
var pos=strArray.toString().indexOf("2");
if(pos!="-1")alert("存在");
else alert("不存在");
//-->
</SCRIPT>
</BODY>
</HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD><BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
var strArray=new Array("1","2","3");
var pos=strArray.toString().indexOf("2");
if(pos!="-1")alert("存在");
else alert("不存在");
//-->
</SCRIPT>
</BODY>
</HTML>
<!--
if(typeof(Array.prototype.indexOf)!="function")
{
Array.prototype.indexOf=function(item, start)
{
start=start||0; if(start<0)start=Math.max(0,this.length+start);
for(var i=start;i<this.length;i++){if(this[i]===item)return i;}
return -1;
};
}
var a = new Array(1,3,5,6,8,2);
alert(a.indexOf(2)!=-1);
alert(a.indexOf(7)!=-1)
//-->
</SCRIPT>
var myArray =new Array(2)
myArray[0] = n;
myArray[1] = n1;
document.write(myArray.sort());
do
{
m2=5
n2=Math.floor(Math.random()*m2+1)
}
while (这里的条件,就是n2不等于n1和n的或等于都可以);
<!--
if(typeof(Array.prototype.indexOf)!="function")
{
Array.prototype.indexOf=function(item, start)
{
start=start||0; if(start<0)start=Math.max(0,this.length+start);
for(var i=start;i<this.length;i++){if(this[i]===item)return i;}
return -1;
};
}var myArray =new Array(2)
myArray[0] = 1;
myArray[1] = 2;while(true)
{
m2=5
n2=Math.floor(Math.random()*m2+1);
if(myArray.indexOf(n2)==-1) break;
}
document.write(n2);
//-->
</SCRIPT>