RIOT.JS - Event Handling

We can attach event to HTML elements in the similar way how we access HTML elements using refs object. As a first step we add a ref attribute to a DOM element and access it using this.ref in the script block of the tag.

  • Attach ref − Add ref attribute to a DOM element.

<button ref = "clickButton">Click Me!</button>

  • Use the refs object − Now use the refs object in mount event. This event is fired when RIOT mounts the custom tag and it populates the refs object.

this.on("mount", function() {
   console.log("Mounting");
   console.log(this.refs.username.value);
})

Example

Following is the complete example.

custom5Tag.tag

<custom5Tag>
   <form>
      <input ref = "username" type = "text" value = "Mahesh"/>
      <input type = "submit" value = "Click Me!" />
   </form>
   <script>
      this.on("mount", function() {
         console.log("Mounting");
         console.log(this.refs.username.value); 
      })
   </script>
</custom5Tag>

custom5.htm

<html>
   <head>
      <script src = "https://cdnjs.cloudflare.com/ajax/libs/riot/3.13.2/riot+compiler.min.js"></script>
   </head>
   <body>
      <custom5Tag></custom5Tag>
      <script src = "custom5Tag.tag" type = "riot/tag"></script>
      <script>
         riot.mount("custom5Tag");
      </script>
   </body>
</html>

This will produce following result −

Advertisements