Function Undefined

[xavirayo]

Hi!
I have added a latlong graticulate to my map and would like to have the ability to turn it on/off.
I think it is a very simple but can't find what I'm doing wrong.
I have added the graticulate in the custom file and then created a function to remove it.

' var graticulate = L.latlngGraticule({
showLabel: true,
fontcolor:"#FFFFFF",
color: "#222",
zoomInterval: [
{start: 2, end: 3, interval: 30},
{start: 4, end: 4, interval: 10},
{start: 5, end: 7, interval: 5},
{start: 8, end: 10, interval: 1}

    ] }).addTo(bootleaf.map);      

function latlon(){
bootleaf.map.removeLayer(graticulate);
}
'

Then I added a checkbox in the Tools list with the event onchange calling the function latlon().
<input type="checkbox" name="graticulate" value="1" onchange="latlon()"></li>
I'm always receiving the message that the function is not defined but I don't know where or how I should call the function.

Thank you very much!

[slead]

Assuming that you're using https://github.com/cloudybay/leaflet.latlng-graticule have you also added the JavaScript into the index.html?

See the demo at https://cloudybay.github.io/leaflet.latlng-graticule/example/ and note the reference to its JavaScript:

<script src="../leaflet.latlng-graticule.js"></script>

[xavirayo]

Thanks for your answer.
Yes, that's the plgin that I'm using.
And I manage to add the graticulate without problems.
My problems are with the button I want to add to let the user remove the graticulate when they want.
I have this code in the custom.js inside the aftermaploads function
' var graticulate = L.latlngGraticule({
showLabel: true,
fontcolor:"#FFFFFF",
color: "#222",
zoomInterval: [
{start: 2, end: 3, interval: 30},
{start: 4, end: 4, interval: 10},
{start: 5, end: 7, interval: 5},
{start: 8, end: 10, interval: 1}

] }).addTo(bootleaf.map);      

function latlon(){
bootleaf.map.removeLayer(graticulate);
}
'

Then I have added a checkbox in the list of tools in the menu:
<input type="checkbox" name="graticulate" value="1" onchange="latlon()"></li>

There is where I got the message that the function is not defined.

Thanks!