回答編集履歴
2
修正
test
CHANGED
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@@ -170,7 +170,7 @@
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-
handleEvent () {
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handleEvent (event) {
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if (event.target === this.target)
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1
使いこなせるかどうかは別として、蛇足追加。
test
CHANGED
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@@ -47,3 +47,197 @@
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47
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```
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以下蛇足です。
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55
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さて、ここで問題です。途中で動作を止めたくなったら？そして再開したり、最初から表示させたくなったらどうするか？またそれらを独立して複数配置したくなったらどうするか？
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56
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```javascript
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<!DOCTYPE html>
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<html lang="ja">
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<meta charset="utf-8">
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64
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<title></title>
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66
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<body>
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<ul>
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<li>
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<li>
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<li>
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<li>
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<li>
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</ul>
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<script>
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{
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class Hoge {
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constructor (target, text = '', wait = 100) {
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this.target = target;
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this.text = text;
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this.wait = wait;
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this.timerId = null;
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this.ary = [ ];
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this.clear ();
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}
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clear () {
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this.target.textContent = '';
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this.ary = this.text.split ('');
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return this;
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}
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start () {
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if (! this.timerId) {
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if (! this.ary.length)
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this.clear ();
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this.timerId = setInterval (loop.bind (this), this.wait);
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}
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return this;
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}
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stop () {
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if (this.timerId)
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clearTimeout (this.timerId),
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(this.timerId = null);
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return this;
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}
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toggle () {
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this.timerId ? this.stop (): this.start ();
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return this;
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}
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handleEvent () {
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if (event.target === this.target)
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this.toggle ();
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}
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}
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//____________________
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const loop = function () {
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(this.ary.length)
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194
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195
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? this.target.textContent += this.ary.shift ()
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197
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: this.stop ();
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}
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201
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//____________________
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204
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this.Hoge = Hoge;
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}
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212
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//__________
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const str = 'この文字列をクリックすると一旦停止します。再開はもう一度クリックしてね';
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const li = document.querySelectorAll ('li');
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let cnt = 0;
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for (let e of li) {
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let obj = new Hoge (e, str, ++cnt * 100);
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document.addEventListener ('click', obj, false);
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obj.clear ().start ();
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}
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236
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237
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239
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+
</script>
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240
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243
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+
```
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