动态设置Javascript中的复选框

Question

Can someone please tell me how to set a checkbox dynamically in Javascript?

function displayResults(html){
    var v = html.split(",");
    document.getElementById('fsystemName').value = v[0];
    if (v[1] == "true"){
        document.getElementById('fUpdateActiveFlag').checked = true;
    }
}

So I am passing some values from my controller separated by commas. For the checkbox, when the value is true I want it to tick the box.

EDIT: When a value is changed from a dropdown box it calls this displayResults method as its return statement:

$('#uINewsSystemList').change(function() {
    $.get("/live-application/SystemById", {systemid: $("#systemList").val()}, displayResults, "html");

I want it to update some other values such as textboxes and checkboxes. I can get the fsystemName to populate with the appropriate value but the fUpdateActiveFlag always stays unchecked.

Answer 1

In your question, you posted a javascript example, not JSP.

In JSP you can use a for loop to write the checkbox like this:

<% for (Element element : elementList) { %>
<input type="checkbox" name="<%=element.getName() %>" value="<%=element.getValue() %>" <%=element.getChecked() ? "checked" : "" %> />
<% } %>

Will result in:

<input type="checkbox" name="option1" value="Milk"> Milk<br>
<input type="checkbox" name="option2" value="Butter" checked> Butter<br>
<input type="checkbox" name="option3" value="Cheese"> Cheese<br>