Empty value retrieved from dropdown selection

My usual method of populating a Dropdown with JavaScript involves the following code:

function populateDropdown(ddl_id) {

var option_str = "";
var x;
for(x in dataList){

    option_str += " <asp:ListItem Value='" + dataList[x] + "' Text='" + dataList[x] + "'></asp:ListItem>"
}
var dropdownDiv = document.getElementById(ddl_id);
dropdownDiv.innerHTML = option_str;
}

Although the datalist is not empty and the Dropdown list is populated perfectly, I am facing an issue where the selected value is not being retrieved after clicking on the add button on my page.

Any ideas or suggestions would be greatly appreciated. Thank you!

Answer №1

It is recommended to utilize a client side select list control instead of a server control when populating options on the client side. This approach may be surprising at first...

However, opting for a select control is advisable.

function populateDropdown(ddl_id) {

var option_str = "<select id='ddl_id'>";
var x;
for(x in datalist){

    option_str += " <option value='" + datalist[x] + "'>" + datalist[x] + "</option>";
}
option_str += "</select>";
var country_dropdown = document.getElementById(ddl_id);
country_dropdown.innerHTML = option_str;
}

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