check if any checkbox has been checked, but id for each checkbox is random

[solarisuser]

Hi All,

 

I have a page that has 20 checkboxes, sometimes with multiple pages (pagination).

The "id" for each checkbox is checkbox_XXXX where XXXX is the mysql id.

 

It's similar to a shopping cart, where the user can select one or more checkboxes, and click "Add to Shopping Cart".

 

I'd like to have a JS that verifies at least one checkbox has been selected before running the $_POST code to add to shopping cart, and if not, just throw an alert with a message.

 

Thanks

[emehrkay]

var input = document.getElementById('container').getElementsByTagName('input');

var checkboxes = [];

for(x in input){

if(input[x].type == 'checkbox') checkboxes.push(input[x]);

}

//now you have an array of all of the checkboxes inside of container. loop through that array to do some stuff

[solarisuser]

Hey There,

 

Can you please post your code in [ code] (minus space) so I can see it all =)

[RichardRotterdam]

just a suggestion why not render the id's ascending its the value that should matter for you input not the id

 

another way is just to loop through all input elements in your form

[emehrkay]

sorry about that

 

var input = document.getElementById('container').getElementsByTagName('input');
var checkboxes = [];
for(x in input){
if(input[x].type == 'checkbox') checkboxes.push(input[x]);
}
//now you have an array of all of the checkboxes inside of container. loop through that array to do some stuff