Insert a new contextmenu menu item at a specific index
insertItemContextmenu(map, option, index)a map widget object created from leaflet
new menu item to add
Index of the contextmenu. (NOTE: Since the index is passed to JavaScript, it is zero-based)
A leaflet map object
Other Contextmenu Functions:
addContextmenu(),
addItemContextmenu(),
hideContextmenu(),
mapmenuItems(),
markermenuItems(),
menuItem(),
removeItemContextmenu(),
removeallItemsContextmenu(),
setDisabledContextmenu(),
showContextmenu()