compare arrays

[ratamaster]

Hi
I have 2 arrays with thises values:

province =[5,5,5,8]
city=[1,1,3,7]

If you see careful, on index 0 y 1 from both arrays they have the same values: 5, 5 y 1,1

How can I detect the repetition???
I want to detect when province has 5,5 (the same numbers), and city array two equal values too (here 1,1).

[AlexVN]

Something like this?

if (province[0] == province[1]) {
// do something
}

[gph]

I've seen prototypes for this. Try searching for "Array.prototype"

[ratamaster]

sorry guys, I didn´t explain it in detail.

I have the "parent" array called province, and its child city. province must have just one child with the same value. I know that city value 2 is child of province value 5, so province must have only one city[2], not more.
I the user "selects" two, an alert have to run when user submit.

this is the function wich creates the arrays:

function Values(form1){
            frm = document.forms[0];
            province = [];
            city = [];

            total_selects=document.forms["form1"].getElementsByTagName("select").length/2;
			
            for(i=1;i<=total_selects;i++){             
                    if(eval("document.getElementById('province"+i+"').value==0")){
                        alert("Provincia está vacio");
                        return false; 
                    }else{
                        province.push(eval("document.getElementById('province"+i+"').value"));// to fill the array province
                    }
                    
                    if(eval("document.getElementById('city"+i+"').value==0")){
                        alert("Ciudad está vacio");
                        return false; 
                    }else{
                        city.push(eval("document.getElementById('city"+i+"').value"));// to fill the array city 
                    }
            }
    
            document.form1.province.value = province; //here are both arrays
            document.form1.city.value = city;
            
        }

thanks!!