質問編集履歴
2
handleEventでのthisの参照先変更
title
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File without changes
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body
CHANGED
@@ -3,6 +3,8 @@
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class構文の練習しているのですが、どこが問題なのかわからず...
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nect,prevのボタンを押すと画像が切り替わる処理です。
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6
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+
⇒ handleEventでのthisの参照先変更
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+
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### 発生している問題・エラーメッセージ
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9
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8
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```
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1
handleEventでのthisの参照先変更
title
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File without changes
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body
CHANGED
@@ -65,44 +65,55 @@
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65
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class Photoview {
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-
constructor(){
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68
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+
constructor( init_index = 0 ){
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this.$el = $('.image_wrapper img');
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70
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+
this.images = [
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70
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-
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'https://fakeimg.pl/350x200/ff0000/?text=1',
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'https://fakeimg.pl/350x200/ff0000/000?text=2',
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72
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-
'https://fakeimg.pl/350x200/ff0000,128/000,255?text=3'
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'https://fakeimg.pl/350x200/ff0000,128/000,255?text=3'
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];
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this.$nextBtn = $('.next');
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this.$prevBtn = $('.prev');
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-
this.index =
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+
this.index = init_index;
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this.handleEvent();
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this.displayImg();
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}
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get Index() {
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return this.index;
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}
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+
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set Index( v ) {
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this.index = v;
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}
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+
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handleEvent() {
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+
const self = this;
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this.$nextBtn.on("click", function(){
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82
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-
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self.next( self.Index );
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});
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this.$prevBtn.on("click", function(){
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85
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-
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self.prev();
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});
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}
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89
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-
next(
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100
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+
next() {
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-
this.index++
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+
this.index++;
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-
this.displayImg(
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102
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+
this.displayImg( this.Index );
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}
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-
prev(
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+
prev() {
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95
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-
this.index--
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+
this.index--;
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96
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-
this.displayImg(
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107
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+
this.displayImg( this.Index );
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}
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-
displayImg(
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110
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+
displayImg() {
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-
this.$el.attr( 'src', this.images[
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111
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+
this.$el.attr( 'src', this.images[ this.Index ] );
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}
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}
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105
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-
const Photoview_ins = new Photoview;
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116
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+
const Photoview_ins = new Photoview();
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</script>
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