I need help determining how to activate a Javascript function only when a checkbox is left unchecked.
Below is the checkbox in question:
<input type="checkbox" id="icd" name="icd" value="icd" />
This is the function that needs to be called:
planhide();
document.getElementById('icd').onchange = function() {
if ( document.getElementById('icd').checked === false ) {
hideThePlan();
}
};
To incorporate the onchange option in the input tag, include an intermediate function that checks and calls planhide() accordingly:
<input type="checkbox" id="icd" name="icd" value="icd" onchange=verify()/>
Create the verify() function to check the state and call the function like this:
function verify()
{
if(document.getElementById("icd").checked==false)
planhide();
}
Alternatively, you can utilize onclick on the submit button to trigger the check() function as shown below:
<input type="button" onclick=verify()/>
$(document).ready(function () {
$('#icd').change(function () {
if (!this.checked) {
hidePlan();
}
});
});
To monitor changes in your input element, simply set an onchange event handler. Within the handler function, check the 'checked' property of the input and call a method if it is false.
For a demonstration, you can view this code on JSFiddle.
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