创建php表单，根据用户选择显示消息

Question

I want to create a php form with checkbox, like this:

< form method="post>
        <input type="checkbox" name="formpractise[]" value="A" /> <br/>
        <br/>
        <input type="checkbox" name="formpractise[]" value="B" /> <br/>
        <br/>
        <input type="checkbox" name="formpractise[]" value="C" />  <br/>
        <br/>
        <input type="checkbox" name="formpractise[]" value="D" /> <br/>
        <br/>
        <input type="checkbox" name="formpractise[]" value="E" /> <br/>
        <br/>
        <input type="checkbox" name="formpractise[]" value="F" /> <br/>
        <br/>
        <input type="submit" name="formsubmit" value="Submit" />
</form>

when the user select checkbox I want to print a message according user choice. Not the choice he made, a message depending his choice.

Answer 1

If you are using the jQuery library, the Javascript would look something like this:

$(function(){
    // The messages
    var messages = {
        A  : "Message for A",
        B  : "Message for B",
        C  : "Message for C",
        D  : "Message for D",
        E  : "Message for E",
        F  : "Message for F"
    };
    $("input").click(function(){
        var key = $(this).val();
        // Only if the checkbox is checked
        if( $(this).is(":checked") )
        {
            // Alert the message
            alert(messages[key]);

            // Fill the HTML of the div with the id messageDIVID
            $("#messageDIVID").html(messages[key]);
        }
    });
});

If you have all your messages inside your PHP code. And you have an array, you can do this

$messages = Array("A" => "Message for A", 
                  "B" => "Message for B", 
                  "C" => "Message for C", 
                  "D" => "Message for D", 
                  "E" => "Message for E", 
                  "F" => "Message for F");

echo "var messages = " . json_encode($messages) . ";";