How to make my form respond to programatically manipulations of selectmenu?

[Anonymous]

My form contains the Country selectmenu. When users select United States from that selectmenu, the States selecetmenu appears; when users select a non-US country, the States selectmenu disappears.

The problem is that my form isn't responding to programatically manipulations of the Country selectmenu. When I manually select United States, the State selectmenu appears correctly. But when United States is selected programmatically (for example, by using the following javascript code), the State selectmenu isn't appearing.

document.getElementById('Country').options[1].selected = true;

How do I make my form respond to programatically manipulations of the Country selectmenu?

[SanfordWhiteman]

Never use DOM methods on Marketo forms.  Use the Forms API setValues() method.

[Anonymous]

Thanks. How do I set values after my form had been initialized? The example in the Examples page seems to combine initialization and value setting together.

I tried the following code but got an error (Uncaught TypeError: MktoForms2.setValues is not a function):

MktoForms2.setValues({ Country: 'United States' });

[SanfordWhiteman · Accepted solution]

setValues is a method of an individual Marketo form instance, not a static method of the MktoForms2 object.

So you need to get a handle to the form, e.g.

MktoForms2.getForm(1499).setValues( /* values object */ )

[Anonymous]

Thank you very much. I see.