I have three parameters namely model, destination and criteria. Whenever the user chooses a model from the dropdown list, where the destination and criteria is dependent, dynamic checkboxes for the destination is shown. And when a user tick a destination, its specific criteria will show. This is a follow up question: How to display multiple list of checkboxes dynamically on dropdown list
<script type="text/javascript">
function populate(model, destination) {
var mod = document.getElementById(model);
var des = document.getElementById(destination);
des.innerHTML = "";
if (mod.value == "model-a") {
var optionArray = ["Model-A.1", "Model-A.2", "Model-A.3"];
} else if (mod.value == "model-b") {
var optionArray = ["Model-B.1", "Model-B.2", "Model-B.3"];
} else if (mod.value == "model-c") {
var optionArray = ["Model-C.1", "Model-C.2", "Model-C.3"];
}
for (var option in optionArray) {
if (optionArray.hasOwnProperty(option)) {
var pair = optionArray[option];
var checkbox = document.createElement("input");
checkbox.type = "checkbox";
checkbox.name = pair;
checkbox.value = pair;
des.appendChild(checkbox);
var label = document.createElement('label')
label.htmlFor = pair;
label.appendChild(document.createTextNode(pair));
des.appendChild(label);
des.appendChild(document.createElement("br"));
}
}
}
</script>
<!DOCTYPE html>
<html>
<body>
SELECT MODEL:
<select id="model" name="model" onchange="populate(this.id, 'destination')">
<option value=""></option>
<option value="model-a">MODEL-A</option>
<option value="model-b">MODEL-B</option>
<option value="model-c">MODEL-C</option>
</select>
<hr />
SELECT DESTINATION:
<div id="destination"></div>
<hr />
</body>
</html>
Can you help me with adding such events. Iam new and still learning javascript.
You may try my solution:
<!DOCTYPE html>
<html>
<head>
<script>
function populate(model, destination) {
var mod = document.getElementById(model);
var des = document.getElementById(destination);
des.innerHTML = "";
if (mod.value == "model-a") {
var optionArray = ["Model-A.1", "Model-A.2", "Model-A.3"];
} else if (mod.value == "model-b") {
var optionArray = ["Model-B.1", "Model-B.2", "Model-B.3"];
} else if (mod.value == "model-c") {
var optionArray = ["Model-C.1", "Model-C.2", "Model-C.3"];
}
for (var option in optionArray) {
if (optionArray.hasOwnProperty(option)) {
var pair = optionArray[option];
var checkbox = document.createElement("input");
checkbox.type = "checkbox";
checkbox.name = pair;
checkbox.value = pair;
//I added the below statement
checkbox.onclick=updateCriteria;
//I added the above statment
des.appendChild(checkbox);
var label = document.createElement('label')
label.htmlFor = pair;
label.appendChild(document.createTextNode(pair));
des.appendChild(label);
des.appendChild(document.createElement("br"));
}
}
}
function updateCriteria()
{
switch(this.value)
{
case "Model-A.1":alert(this.value+" is a dog.");
break;
case "Model-A.2":alert(this.value+" is a cat.");
break;
}
this.checked=false;
}
</script>
</head>
<body>
SELECT MODEL:
<select id="model" name="model" onchange="populate(this.id, 'destination');">
<option value=""></option>
<option value="model-a">MODEL-A</option>
<option value="model-b">MODEL-B</option>
<option value="model-c">MODEL-C</option>
</select>
<hr />
SELECT DESTINATION:
<div id="destination"></div>
<hr />
</body>
</html>
you can use below code to attach event to the dynamically created element
var checkbox = document.createElement("input");
checkbox.type = "checkbox";
checkbox.name = pair;
checkbox.value = pair;
checkbox.id = "desCheckBox";
des.appendChild(checkbox);
//eventname is name of the event
// here id is "desCheckBox"
document.addEventListener('eventname', function (e) {
if (e.target && e.target.id == 'id') {
// do something
}
});
You could assign a class className to the checkbox you're creating and write an event applying to that class name. checkbox.className = "class_Name"
You can write this code at the level of your populate method.
$(".class_Name").unbind();
$(".class_Name").on("change", function () {
//this will give you access to the checkbox item being changed
});
