Sending arrays' values in JavaScript

Here is a list of different groups to choose from:

 <select multiple="multiple"  name="groups[]"  id="groups[]" class="myclass">

<option value="1">Employees</option>        
<option value="2">Vendors</option>
<option value="3">Clients</option>

 </select>

I'm currently using the code below to pass the selected group to an ajax URL, but I'm only getting one group passed at a time:

<Script>
    var selectedGroups = [];
    var selectElement = document.getElementById("groups[]");
    for (var i = 0; i < selectElement.options.length; i++) {
        if (selectElement.options[i].selected) {
            selectedGroups.push(selectElement.options[i].value);
        }
    }

    xmlHttp.open("POST", "?action=ajaxcontac&groups=" + JSON.stringify(selectedGroups), true);
</Script>

Is there a way for me to pass multiple groups to the URL?

Thank you.

Answer №1

const options = document.querySelectorAll("#allGroups\\[\\] option"),

    selectedGroups = [].map.call(options, function(item) {
        if (item.selected) {
            return "allGroups[]=" + item.value;
        }
    }).filter(Boolean).join("&");


xmlHttpRequest.open("POST", "?action=ajaxdata&" + selectedGroups, true);

Live Example

http://jsfiddle.net/YWQPR/3/

Answer №2

For a potential resolution, consider exploring this suggestion: Incorporate all chosen options in a multi-selection list.

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