标签：
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
alert(fn1(5)) //1 2 3 4 5
function fn1(n){
if(!isDigital(n)){
alert("请输入正整数,thank you!")
return;
}
var arr = [];
for(var i = 1; i <= n; i++){
arr.push(i);
}
return arr;
}
alert(fn2(6,2));// 2 3 4 5 6
alert(fn2(1,8))// 1 2 3 4 5 6 7 8
function fn2(num1, num2){
if(!isDigital(num1) || !isDigital(num2)) {
alert("请输入正整数,thank you!")
return;
}
var arr = [];
if(num1 > num2){
for(var i = num2; i <= num1; i++){
arr.push(i);
}
}else if(num1 <= num2){
for(var i = num1; i <= num2; i++){
arr.push(i);
}
}
return arr;
}
//判断是否是正整数
function isDigital(num){
if( num <= 0 || (num+‘‘).indexOf(".") != -1) {
return false;
}
return true;
}
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/bravolove/p/5982957.html
