回答編集履歴
8
background: yellow;
test
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@@ -176,7 +176,7 @@
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.c {
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background: yello;
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background: yellow;
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}
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7
d
test
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@@ -182,7 +182,7 @@
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.
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.d {
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background: green;
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6
a
test
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@@ -123,3 +123,121 @@
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console.log(hoge.next().value) //b
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```
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# 追記 (使い方のイメージ)
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135
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[https://codepen.io/anon/pen/aYgKgz
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](https://codepen.io/anon/pen/aYgKgz)
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```
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<div id='target' class=''></div>
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```
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```
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#target {
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width: 100px;
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height: 100px;
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border: solid 1px #000000;
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}
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.a {
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background: red;
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}
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.b {
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background: blue;
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}
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.c {
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background: yello;
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}
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.c {
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background: green;
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}
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```
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```
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function foo(list) {
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var i = 0;
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var max = list.length;
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return function baz() {
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if (i >= max) {
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i = 0;
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}
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return list[i++];
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}
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}
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const hoge = foo(['a', 'b', 'c', 'd']);
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var $target = document.getElementById('target');
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$target.addEventListener('mousedown',function(){
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this.className = hoge();
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});
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$target.addEventListener('mouseup',function(){
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this.className = hoge();
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});
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```
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5
lazexさんのコメントを反映
test
CHANGED
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@@ -62,15 +62,11 @@
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62
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const max = list.length;
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while (i < max) {
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yield list[i++];
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}
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yield* foo(list);
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@@ -93,3 +89,37 @@
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93
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console.log(hoge.next().value) //b
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90
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95
91
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```
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92
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93
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94
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95
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## lazexさんからコメント欄で頂いたコード
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96
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97
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```
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98
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99
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function* foo(list) {
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100
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while(true) {
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yield* list;
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105
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}
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}
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108
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110
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111
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const hoge = foo(['a', 'b', 'c', 'd']);
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console.log(hoge.next().value) //a
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console.log(hoge.next().value) //b
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console.log(hoge.next().value) //c
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console.log(hoge.next().value) //d
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console.log(hoge.next().value) //a
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console.log(hoge.next().value) //b
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```
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4
a
test
CHANGED
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@@ -42,7 +42,7 @@
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42
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43
43
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44
44
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45
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-
質問を読み間違えている可能性はありますが、とりあえず呼び出される度に次のクラス名を返してくれるようなものがあれば良いのかなと思ったので簡易的なものを書いてみました。
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45
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+
質問を読み間違えている可能性はありますが、少なくとも「このデザインのa1~a4をボタンを押すごとに順に進むようにしたいです。」の行までの説明を読む限りでは、とりあえず呼び出される度に次のクラス名を返してくれるようなものがあれば良いのかなと思ったので簡易的なものを書いてみました。
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46
46
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47
47
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48
48
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3
最後のgeneratorのログ出力のコメントが間違ってたので、そこを修正
test
CHANGED
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@@ -88,8 +88,8 @@
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88
88
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89
89
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console.log(hoge.next().value) //d
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console.log(hoge.next().value) //
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console.log(hoge.next().value) //a
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92
92
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console.log(hoge.next().value) //
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93
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console.log(hoge.next().value) //b
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94
94
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95
95
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```
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2
a
test
CHANGED
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@@ -78,18 +78,18 @@
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78
78
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79
79
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80
80
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81
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-
const
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81
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const hoge = foo(['a', 'b', 'c', 'd']);
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82
82
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83
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console.log(
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83
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console.log(hoge.next().value) //a
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84
84
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85
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-
console.log(
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85
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console.log(hoge.next().value) //b
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86
86
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87
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-
console.log(
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87
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console.log(hoge.next().value) //c
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88
88
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89
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console.log(
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console.log(hoge.next().value) //d
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90
90
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91
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-
console.log(
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91
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console.log(hoge.next().value) //e
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92
92
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93
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-
console.log(
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93
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+
console.log(hoge.next().value) //f
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94
94
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95
95
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```
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1
a
test
CHANGED
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@@ -46,4 +46,50 @@
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46
46
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47
47
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48
48
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49
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-
関数や変数の命名は適当につけましたが、あとはhoge関数をmousedownやmouseupの度に呼んであげればよいの
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49
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+
関数や変数の命名は適当につけましたが、あとはhoge関数をmousedownやmouseupの度に呼んであげればよいのかなと。
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50
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+
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51
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+
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52
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+
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53
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+
# ES6対応OKな場合
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54
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+
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55
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+
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56
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+
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57
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+
```
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58
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+
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59
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+
function* foo(list) {
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60
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+
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61
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let i = 0;
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62
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+
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63
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const max = list.length;
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64
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65
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+
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66
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+
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67
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+
while (i < max) {
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68
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69
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+
yield list[i++];
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70
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71
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}
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72
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+
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73
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+
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74
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+
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75
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+
yield* foo(list);
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76
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+
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77
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+
}
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78
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+
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79
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+
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80
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+
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81
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+
const f = foo(['a', 'b', 'c', 'd']);
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82
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+
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83
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+
console.log(f.next().value) //a
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84
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+
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85
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console.log(f.next().value) //b
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86
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+
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87
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+
console.log(f.next().value) //c
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88
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+
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89
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console.log(f.next().value) //d
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90
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+
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91
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+
console.log(f.next().value) //e
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92
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+
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93
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console.log(f.next().value) //f
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94
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+
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95
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+
```
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