How to search a loop for only certain elements

[ttomasko]

Hello,

I want to search through an array to make sure all the elements are the same. If so, I want there to be one alert to the user, not as many alerts as there are elements. But if one or more elements do not meet a condition, I want an alert for each of those elements.

Below is the script. In the array here all the elements are "b." I get five alerts when I really only want one. But if I change two of the elements to say "c" and "d", I want just two alerts for those elements. I want to ignore all the "b" elements.

How can I make this work?
Thanks,
Tom

var a = new Array ("b","b","b","b","b");
for(var i = 0; i < a.length; i++){
if(a =="b"){
alert("No problems, everything is b.");
}//end if
else if(a !="b"){
alert("OH oh, you have a "+a+" in the array.");
}//end else if
}//end for

 

[kzn]

var a = new Array ("b","b","b","b","b");
var t = false;
for(var i = 0; i < a.length; i++){
if(a =="b" && t == false){
alert("No problems, everything is b.");
t = true;
}//end if
else if(a =="b" && t == true){
alert("OH oh, you have a "+a+" in the array.");
}//end else if
}//end for

 

[ttomasko]

Dear kzn,

Your script did not work. I still get multiple alerts in the case that all the elements are "b" and I get multiple alerts in the case that any of the elements are not "b". But what is worse, the "Oh oh" alert returns even when an element is "b".

Tom

 

[ttomasko]

OK, I found one of the problems. The condition for ELSE IF has to be (a!="b"

So now the script work fine when all elements are the same.

However, when one or more elements are different than "b" I get one alert that says "No problems..." and then an alert for each of the non-"b" elements.

So I need to eliminate that first alert.

Thanks,
Tom

 

[ttomasko]

This code works:

var a = new Array("b","b","x","c","b");
var flag = '';
for(var i = 0; i< a.length; i++){
if(a=="b" ){
}//end if
else {
if(a!="b" ){
flag = a;
alert("Oh oh, you have a "+flag+" in the array.");}
}//end else if
}//end for
if (flag == '') {
alert("No problem, everything is b.");
}//end if

 

[wvdba]

just set a switch to true or false;
after the loop has finished,
if the switch is ture
alert ("switch is true")
else
alert ("switch is false")