27 lines
659 B
Dart
27 lines
659 B
Dart
import 'dart:html';
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import 'dart:async';
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const frameTime = const Duration(milliseconds: 100);
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void main() {
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String text = "Hello World! ";
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bool rotateRight = true;
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Element writeHere =
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querySelector('#output'); // assumes you have a pre with that ID
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writeHere.onClick.listen((event) => rotateRight = !rotateRight);
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new Timer.periodic(frameTime, (_) {
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text = changeText(text, rotateRight);
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writeHere.text = text;
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});
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}
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String changeText(extt, rotateRight) {
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if (rotateRight) {
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return extt.substring(extt.length - 1) + extt.substring(0, extt.length - 1);
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} else {
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return extt.substring(1) + extt.substring(0, 1);
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}
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}
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