I'm attempting to update some text indicating whether or not a checkbox is checked. The issue is that when the checkbox is checked, the textbox disappears and the text takes its place.
<form name="myForm" id="myForm">
<input type="checkbox" name="checkMe" id="checkMe" onClick="verify();" />
</form>
<script type="text/javascript">
function verify() {
document.write("Checkbox status: " + document.myForm.checkMe.checked);
}
</script>
The issue you're encountering is a direct result of utilizing document.write. This method replaces the entire body of the document with the text that you're providing. For a more effective approach, consider implementing the following:
<form name="form" id="form">
<input type="checkbox" name="cb" id="cb" onClick="check();" />
</form>
<div id="cb-status">checked: false</div>
<script type="text/javascript">
function check() {
document.getElementById('cb-status').innerHTML = "checked: " + document.form.cb.checked;
}
</script>
Don't forget to close the bracket after the closing tag of HTML for is(":checked") and when concatenating strings:
$(":checkbox").click(function(){
$("span#message").html("Checkbox status: " + $(this).is(":checked"));
});
If you want to simplify your tasks, consider utilizing jQuery:
Let's say you have a checkbox:
<input type="checkbox" >
And a span element with the id of "message":
<span id="message"></span>
With this code, clicking on the checkbox will display whether it is checked or not in the span:
$("document").ready(function(){
$(":checkbox").click(function(){
$("span#message").html("Checkbox is checked: " + $(this).is(":checked"));
});
});
Take a look at the example on jsFiddle: http://jsfiddle.net/WNDUH/3/
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