Question

I have a list of dynamically created checkboxes named “tags” which I loop through with javascript to make sure only 1 is checked and to get the value. If for some reason this list of checkboxes only has 1 item, my script won’t look at it. When I alert the tag’s length I get undefined.

    var total=[];
    for (var i=0; i < document.form1.tags.length; i++){
        if(document.form1.tags[i].checked==true){
            total.push(document.form1.tags[i].value);
        }
    }

    if(total.length==0){
        alert("Please select a product to edit.");
    }else if (total.length>1){
        alert("Please select only one product to edit.");
    }else{
        document.location = "go somewhere";
    }

Answer 1

Two suggestions:

1. use getElementsByName instead to get all the elements so you can iterate them:

2. Use a framework like jquery. Any reason you can’t use jquery or another framework? Your life would be so much easier.

var tags = document.getElementsByName('tags');
for(var i = 0; i < tags.length; ++i)
{
    if(tags[i].checked) .....
}