回答編集履歴
3
回答をinput要素を前提としたものに修正
answer
CHANGED
|
@@ -1,11 +1,15 @@
|
|
|
1
|
-
|
|
1
|
+
`input`要素を前提とした内容に修正
|
|
2
2
|
|
|
3
|
+
---
|
|
4
|
+
`Object.entries`と`Array.reduce`の組み合わせが一番近いかな？
|
|
5
|
+
|
|
3
6
|
```HTML
|
|
4
|
-
<
|
|
7
|
+
<input name="item_id" value="id"/>
|
|
5
|
-
<
|
|
8
|
+
<input name="item_name" value="name"/>
|
|
6
|
-
<
|
|
9
|
+
<input name="catch_copy" value="copy"/>
|
|
7
|
-
<
|
|
10
|
+
<input name="price" value="price"/>
|
|
8
11
|
```
|
|
12
|
+
|
|
9
13
|
```JavaScript
|
|
10
14
|
"use strict";
|
|
11
15
|
{
|
|
@@ -15,27 +19,17 @@
|
|
|
15
19
|
"catch_copy": "[name='catch_copy']",
|
|
16
20
|
"price": "[name='price']"
|
|
17
21
|
};
|
|
22
|
+
|
|
23
|
+
/*
|
|
18
24
|
const obj = {};
|
|
19
25
|
Object.entries(map).forEach(
|
|
20
26
|
([key, val]) =>
|
|
21
|
-
obj[key] = (document.querySelector(val) || {
|
|
27
|
+
obj[key] = (document.querySelector(val) || {}).defaultValue
|
|
22
28
|
);
|
|
23
|
-
console.log(JSON.stringify(obj));
|
|
24
|
-
}
|
|
25
|
-
```
|
|
26
|
-
`Object.entries`と`Array.reduce`の組み合わせが一番近いかな？
|
|
27
|
-
|
|
29
|
+
*/
|
|
28
|
-
"use strict";
|
|
29
|
-
{
|
|
30
|
-
const map = {
|
|
31
|
-
"id": "[name='item_id']",
|
|
32
|
-
"name": "[name='item_name']",
|
|
33
|
-
"catch_copy": "[name='catch_copy']",
|
|
34
|
-
"price": "[name='price']"
|
|
35
|
-
};
|
|
36
30
|
const obj = Object.entries(map).reduce(
|
|
37
31
|
(prev, [key, val]) =>
|
|
38
|
-
(prev[key] = (document.querySelector(val) || {
|
|
32
|
+
(prev[key] = (document.querySelector(val) || {}).defaultValue, prev)
|
|
39
33
|
, {}
|
|
40
34
|
);
|
|
41
35
|
console.log(JSON.stringify(obj));
|
|
@@ -44,7 +38,4 @@
|
|
|
44
38
|
[https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/entries](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/entries)
|
|
45
39
|
[https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)
|
|
46
40
|
|
|
47
|
-
ぶっちゃけ`for-in`構文でぶん回すほうがよほど判りやすいと思いますが
|
|
41
|
+
ぶっちゃけ`for-in`構文でぶん回すほうがよほど判りやすいと思いますが
|
|
48
|
-
|
|
49
|
-
NOTE:
|
|
50
|
-
DOMに`defaultValue`というAPIありましたっけ？
|
2
リンクを追加
answer
CHANGED
|
@@ -41,6 +41,10 @@
|
|
|
41
41
|
console.log(JSON.stringify(obj));
|
|
42
42
|
}
|
|
43
43
|
```
|
|
44
|
+
[https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/entries](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/entries)
|
|
45
|
+
[https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)
|
|
44
46
|
|
|
47
|
+
ぶっちゃけ`for-in`構文でぶん回すほうがよほど判りやすいと思いますが
|
|
48
|
+
|
|
45
49
|
NOTE:
|
|
46
50
|
DOMに`defaultValue`というAPIありましたっけ？
|
1
Array.reduceを使った例を追加
answer
CHANGED
|
@@ -23,6 +23,24 @@
|
|
|
23
23
|
console.log(JSON.stringify(obj));
|
|
24
24
|
}
|
|
25
25
|
```
|
|
26
|
+
`Object.entries`と`Array.reduce`の組み合わせが一番近いかな？
|
|
27
|
+
```JavaScript
|
|
28
|
+
"use strict";
|
|
29
|
+
{
|
|
30
|
+
const map = {
|
|
31
|
+
"id": "[name='item_id']",
|
|
32
|
+
"name": "[name='item_name']",
|
|
33
|
+
"catch_copy": "[name='catch_copy']",
|
|
34
|
+
"price": "[name='price']"
|
|
35
|
+
};
|
|
36
|
+
const obj = Object.entries(map).reduce(
|
|
37
|
+
(prev, [key, val]) =>
|
|
38
|
+
(prev[key] = (document.querySelector(val) || {dataset: {defaultValue: null}}).dataset.defaultValue, prev)
|
|
39
|
+
, {}
|
|
40
|
+
);
|
|
41
|
+
console.log(JSON.stringify(obj));
|
|
42
|
+
}
|
|
43
|
+
```
|
|
26
44
|
|
|
27
45
|
NOTE:
|
|
28
46
|
DOMに`defaultValue`というAPIありましたっけ？
|