Sigma Visual Manual

How to add an event handler

In this section, you will learn how to create a web application with following feature.

This application has one button with caption "say something".
When user clicks that button, an asynchronous message box drops down from top of web page saying "hello, world".

After you add a button component to your web page by dragging it from [Tool Box], a button will appear on your web page. Click the button to select it.

Click the plus before [events] in [Component Config Window], then all the event for button will collapse.
Click [events→onClick] and then value of [event → onClick] will be highlighted, as the following figure shows.

add an event handler

Click the button on the right side to pop up a dialog like the following figure.
Input the following text.

function (profile, e, value) {

linb.message("hello, world");

}

Press [OK] button to close window and save event handler code.
Press [Run] button to preview result.

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How to add an event handler