Question

js怎么判断两个集合中是否含有相等的元素

Answer 1

<script>
var a = [1,3,5,4,8];
var b = [5,4,3,1,8];
//var a = ["我","你","他","她","它"];
//var b = ["他","我","它","你","她"];

a.sort();
b.sort();

if(a.join() == b.join()){
alert("ok\na:" + a.join() + "\nb:" + b.join());
}else{
alert("no");
}
</script>

如果数组包含对象。那么，只能双循环来判断了。

for(var i = 0; i < a.length; i++){
for(var j = 0; j < b.length; j++){
//...
}
}