Dynamic checkbox list in javascript - not working
Question
I'm trying to create a list of checkboxes when a certain element is selected from the dropdown list. However, in the following code I am getting only the last element in the checkbox list. That is, at the output, there aren't 3 checkboxes (length of my array) but there is only one - only with the last element in the array.
What am I doing wrong?
<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
<script>
function chooseTable(db) {
if(db=="hr.employee"){
var div = document.getElementById("table");
var ids = ["id","name", "write_uid"];
var main = document.getElementById('main1');
var parentElement = document.getElementById('ids');
for(var count in ids)
{
var newCheckBox = document.createElement('input');
newCheckBox.type = 'checkbox';
newCheckBox.id = 'id' + count; // need unique Ids!
parentElement.innerHTML = ids[count];
newCheckBox.value = ids[count];
parentElement.appendChild(newCheckBox);
}
}
}
</script>
<center>
<bold>
<h2>
Make Query
</h2>
</bold>
<div id="main1">
<div>
Choose database:<br/>
<select id="table" name="table" onchange="chooseTable(this.value)">
<option name="choice" value=""></option>
<option name="choice1" value="hr.employee">Employees</option>
<option name="choice2" value="account.account">Accounts</option>
</select>
</div>
<div id="ids">
</div>
</div>
</center>
</body>
</html>
2 answers
solution1
1 2015-10-08 08:04:52
because innerHTML method will clean its own inside and rewrite new element.
how about try this?
for(var count in ids)
{
var newCheckBox = document.createElement('input');
var newSpan = document.createElement('span');
newCheckBox.type = 'checkbox';
newCheckBox.id = 'id' + count; // need unique Ids!
newSpan.innerHTML = ids[count];
newCheckBox.value = ids[count];
parentElement.appendChild(newSpan);
parentElement.appendChild(newCheckBox);
}
solution2
1 ACCPTED 2015-10-08 08:09:40
the problem is the parentElement.innerHTML = ids[count]; code. It clean all the previous html content. And to add label to the checkbox it's better use label tag. Try this:
for(var count in ids)
{
var newCheckBox = document.createElement('input');
newCheckBox.type = 'checkbox';
newCheckBox.id = 'id' + count; // need unique Ids!
newCheckBox.value = ids[count];
parentElement.appendChild(newCheckBox);
var newLabel = document.createElement('label');
newLabel.innerHTML = ids[count];
parentElement.appendChild(newLabel);
}
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