Alert Component

by on October 13, 2022

Alert UI Component

Alerts are a great way to provide users with confirmation that the actions they are taking in your app are being completed. The Alert component makes it easy to provide this instant feedback.

Alerts can be valuable in a number of circumstances. Sometimes you need to alert your user that their action completed successfully, while other times you need to warn them that the action is not permitted or even failed.

The Alert component, available free in Backendless Marketplace, lets you select from four basic alert types: Error, Warning, Info, and Success. Of course, like all components in Backendless, you have the power to customize them to fit your exact use case.

Alert success example

You are able to change the size and appearance of almost all aspect of the Alert component, so your options are virtually limitless.

Read the full documentation here.

How to Install the Alert Component

Installing custom components from Backendless Marketplace is super easy. First, in UI Builder, select the Components tab.

Go to Components in UI Builder

There, you will see a button labeled Install Component. This will take you to the library of components available in the Marketplace.

Install UI Component in UI Builder

When you click Install Component, you will open a list of available UI Components to install.

Install a UI Component from Marketplace

Select the component you want and click Install.

When you return to the User Interface tab, you will see a new section added to your toolkit on the right-hand side called Custom Components.

Alert Component added to UI Builder Canvas

You can then simply drag the component onto your canvas just like any other UI Component.

Available Options and What They Mean

Once you have placed your component, when you select it, you will see all of the available options (properties) for the component in the toolkit area. These are the default settings for the component that you can easily adjust.

Each of the available properties are described in the table below. For more information, such as Theme styles and event handlers, visit the Alert GitHub repo.

Property Type Default value Logic Data Binding UI Setting Description
messageTitle String Message Title Logic YES YES Allows writing the title of message.
messageText String Message Text Logic YES YES Allows writing the text of message.
messageType Select [“error”, “warning”, “info”, “success”] “error” Message Type Logic NO YES Allows select type of alert (error, warning, info, success).
iconVisibility Boolean true Icon Visibility Logic NO YES Allows making alerts with or without icon.
closeButtonVisibility Boolean true Close Button Visibility Logic NO YES Allows making alerts with or without a close button.
variant Select [“alert root”, “alert outline”, “alert filled”] “alert root” NO YES Allows select style for alert (alert root, alert outline, alert filled).
closingDuration Number 200 Closing Duration Logic NO YES Allows specifying speed animation closing (ms) for the alert.


When you click on the Logic icon or tab for the component, you will see the modifiable event handlers, just as you would with a standard component. However, the main logic for the component – the logic that makes it work – is hidden to protect it from accidentally being broken.

Additionally, in the Logic area, you will also find all available data binding properties.

That’s it! Ready to try it for yourself?

The Alert component is one of many custom components available now in Backendless Marketplace, completely free!

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