onclick event for all inputs in a form?

DANG IT. There is no fade() - answer found.

I want to have it so that whenever someone clicks on a form input, a div fades away.

    $( '#form_id' ).find( 'input' ).click(function() {

        $( '#div_to_fade_away' ).fade();

    });

Why wouldn't that wo开发者_如何学编程rk? Similar question. Appears to work for this use?

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You need the fadeOut()^(docs) method instead of .fade(), and make sure the DOM is loaded.

$(function() {
    $( '#form_id' ).find( 'input' ).click(function() {

        $( '#div_to_fade_away' ).fadeOut();

    });
});

Wrapping your code with $(function() { /* your code */ }); is a shortcut for calling jQuery's ready()^(docs) method.

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While I think there's the more to this question than you stated, the reason that your posted jQuery doesn't work is that there is no fade() method. You can, however, use fadeOut().