![]() ![]() In this exercise, you’ll create an email address sign-up screen and see that email reflected on a confirmation screen. Check out these exercises to learn how to use them. With Variables, you can transfer information from screen to screen and create advanced interactions. How-tos: learn how to design common use cases You can create so many different types of prototypes with variables – continue on to the next article to see more examples of how to use them to share information between screens, define conditional content, and build automatic countdown timers. This event copies the variable’s value and paste it onto the text element when you click on it during simulation. Click to the ‘Variables’ tab in the Canvas preview and drag the variable from the list to the open space in the expression.Below, click on the ‘Calculated’ radio button and the ‘Add expression’ text link to open the Value Expression builder.You’ll see a Canvas preview where you can select the text element as the target of the action.Select an On Page Load trigger and a Set Value action for the event.Go to the Events palette and click ‘Add event’.Select the element you’d like to show the variable’s value.The Events Palette: you may want an element to display the variable’s value after doing something else on the screen first, like tapping on some text.Drag variable to element This will create an On Page Load + Set Value event automatically, which transfers whatever’s stored in the variable to the text element on this screen. Drag and drop: drag the variable from the Variable’s palette to the text element on the Canvas.You can give that text element the variable’s value in two ways: As an example, you can select a Text T element you’ve added on the Canvas. Go to another screen in your prototype and select the element you’d like to display the variable’s value. Now that you’ve defined a value for the variable, you can move the variable’s value to an element on another screen. This event transfers whatever’s entered in the input text field over to the variable when you click out of the input text field. Click ‘OK’ to finish building the expression and the event.Drag and drop the input text field from the Canvas preview to the open space in the expression that reads “Click to edit or drag & drop a component”. You’ll now see the Value Expression builder, which is where you can define what value you’ll give to the variable.Click on the ‘Calculated’ radio button and then tap the ‘Add expression’ text link. Below, you can find where you’ll define the value to give the variable.Click on the ‘Variables’ radio button and choose a variable you previously created from the list. You’ll see a preview of the Canvas appear next with two radio buttons – ‘Elements’ and ‘Variables’.Select Set Value to an element from the ‘Choose Action’ dropdown.As an example, pick the On Focus Out trigger. Click on that and pick a trigger which will start the event. You’ll see a dropdown labeled ‘Choose Trigger’.Select the element you’d like to give the variable a value.This is useful for when you’ll want to define a variable’s value in another way, like after focusing out of an input text field or clicking on a button. The Events palette: You can also manually create the events to give a variable a value with the Events palette.This creates an On Page Unload + Set Value event automatically, which transfers whatever’s in the input text field to the variable when you go to another screen. As an example, drag an Input Text Field to the Variables palette. ![]() Drag and drop: Drag the element you’d like to give the value to the variable to the Variable’s palette.To change the value of a variable during simulation, you’ll need to use events. Most often, you’ll want to leave this blank. When you create a new variable, you’ll be able to define its default value. If you don’t see the Variables palette, make sure it’s checked to be visible in the Palette menu. Look to the Variables palette and click the ‘+’ button to create a new variable in your prototype. For example, you can take a name typed in an Input Text Field and show that same name in a Text element on another screen. You can use variables to store and transfer information like text, images, or data across screens in your prototype. With Variables, you can take your wireframes to the next level and build lifelike prototypes. ![]()
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