How I can do autocomplete on codemirror onload the codemirror?

1

I am do submit every 5 second so I want to trigger autocomplete on codemirror when I onload , My try work only if I call autocomplete on “cursorActivity” But I want to triggre autocomplete when onload But it did not work :

My Try work :
editor.on(‘cursorActivity’,function(e){
if(doautocomplete==1)

                        {
                         editor.execCommand("autocomplete");    
                        };
});

Now i try onload but the autocomplete did not trigger :
var editor = CodeMirror.fromTextArea(document.getElementById(“preview-form-comment”), {
onload: CodeMirrorloaded()
});
function CodeMirrorloaded()
{
if(doautocomplete==1)

                            alert("hello");
                         editor.execCommand("autocomplete");
};

my tow try But did not work :
var editor = CodeMirror.fromTextArea(document.getElementById(“preview-form-comment”), {
});
editor.refresh();
if(doautocomplete==1)
{
alert(“hello”);
editor.execCommand(“autocomplete”);
};
so any help … How I can do autocomplete on codemirror onload the codemirror ?