messageBoxObject(default: { mode: "multi", maxTextAreaHeight: 110 })
Configures the built-in message input box (PromptBox). Use this option to customize the default input mode, row count, and auto-grow height when messageBoxTemplate is not set.
Example
<div id="chat"></div>
<script>
$("#chat").kendoChat({
authorId: "user",
messageBox: {
mode: "auto",
maxTextAreaHeight: 200,
fileAttachment: {
restrictions: {
allowedExtensions: [".jpg", ".png", ".pdf"]
}
}
}
});
</script>