JS for循环嵌套？？
varstr='4,5';varnum='1,2,3,4,5,';输出格式：4-1,4-2,4-3,4-4,4-55-1,5-2,5-3,5-4,5-5如何写？？？？va...
var str='4,5';
var num='1,2,3,4,5,';
输出格式：4-1,4-2,4-3,4-4,4-5
5-1,5-2,5-3,5-4,5-5
如何写？？？？
var arry=new Array;
var arry2=new Array;
arry=ports.split(','); //ports='53';
arry2=cparam.split(','); //cparam='01,02,03';
ports='';
for(var i=0;i<arry.length;i++){
for(var j=0;j<=arry2.length;j++){
ports+=arry[i]+arry2[j]+',';
}}
alert(ports);
//弹出 5301,5302,5303,53,53undefined,01,02,03,,undefined, 展开
var num='1,2,3,4,5,';
输出格式：4-1,4-2,4-3,4-4,4-5
5-1,5-2,5-3,5-4,5-5
如何写？？？？
var arry=new Array;
var arry2=new Array;
arry=ports.split(','); //ports='53';
arry2=cparam.split(','); //cparam='01,02,03';
ports='';
for(var i=0;i<arry.length;i++){
for(var j=0;j<=arry2.length;j++){
ports+=arry[i]+arry2[j]+',';
}}
alert(ports);
//弹出 5301,5302,5303,53,53undefined,01,02,03,,undefined, 展开
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<script type="text/javascript">
function getTime() {
var str = '4,5';
var num = '1,2,3,4,5';
var a1=str.split(",");
var a2=num.split(",");
for (var i = 0; i < a1.length; i++) {
for (var j = 0; j < a2.length; j++) {
var s = ",";
if (j == a2.length - 1) {
s = "";
}
document.write(a1[i] + "-" + a2[j] + s);
}
document.write("<br>");
}
}
getTime();
</script>
function getTime() {
var str = '4,5';
var num = '1,2,3,4,5';
var a1=str.split(",");
var a2=num.split(",");
for (var i = 0; i < a1.length; i++) {
for (var j = 0; j < a2.length; j++) {
var s = ",";
if (j == a2.length - 1) {
s = "";
}
document.write(a1[i] + "-" + a2[j] + s);
}
document.write("<br>");
}
}
getTime();
</script>
追问
你看下我补充的回答，看出现的问题是什么原因？？
追答
第二个循环 j < a2.length 就行
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为了安全起见，源代码再私信给你一份。 私信的时候发现是河南老乡啊，哈哈，我在郑州呢，你在哪儿上学？
<!DOCTYPE html>
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript">
function printstr(){
var str='4,5';
var num='1,2,3,4,5';
var strs=str.split(",");
var nums=num.split(",");
for(var i=0;i<strs.length;i++){
for(var j=0;j<nums.length;j++){
document.write(strs[i]+"-"+nums[j]+",");
}
document.write("</br>");
}
}
printstr();
</script>
</head>
<body>
This is my HTML page. <br>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript">
function printstr(){
var str='4,5';
var num='1,2,3,4,5';
var strs=str.split(",");
var nums=num.split(",");
for(var i=0;i<strs.length;i++){
for(var j=0;j<nums.length;j++){
document.write(strs[i]+"-"+nums[j]+",");
}
document.write("</br>");
}
}
printstr();
</script>
</head>
<body>
This is my HTML page. <br>
</body>
</html>
追问
我以前在郑州上学，现在毕业了在上海呢！你看下我补充的回答，看出现的问题是什么原因？？
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