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onchange

Description​

Fires on change of the value in textarea

Usage​

onchange?: (ev: { value: string; input?: boolean }) => void;

Parameters​

  • value - (required) the value of the input
  • input - (optional) - (optional) true, if a value is being typed by a user (check details below)

Example​

Tracking user input:

<script>
  import { Textarea } from "@svar-ui/svelte-textarea";

  const onchange = ({ value, input }) => {
    console.log("Textarea value:", value, "Changed by user:", !!input);
  };
</script>

<Textarea onchange={onchange} />

Details​

The handler function receives the new value of the counter typed in the input. The received object may also contain input:true, depending on the fired HTML input event:

  • if the input event of the HTML input is caught (a number is being typed), the change event of the control will have input:true
  • if the change event of the HTML input is caught (a user has applied changes), the change event of the control won't have the input property

Related article: Catching the change of the value