回答編集履歴
5
修正
test
CHANGED
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@@ -8,7 +8,7 @@
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11
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const dst = src.replaceAll(/山梨県|梨/g, a => a === "梨" ? "りんご" : a);
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11
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+
const dst = src.replaceAll(/山梨県|梨/gu, a => a === "梨" ? "りんご" : a);
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console.log(dst);
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@@ -22,7 +22,7 @@
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```js
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-
const dst = src.replaceAll(/山梨県|二十世紀梨|梨/g, a => a === "梨" ? "りんご" : a);
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const dst = src.replaceAll(/山梨県|二十世紀梨|梨/gu, a => a === "梨" ? "りんご" : a);
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```
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@@ -46,7 +46,7 @@
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const searchValue = ignore.concat(target).map(escapeRegularExpression).join("|");
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const regExp = new RegExp(searchValue, "g");
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const regExp = new RegExp(searchValue, "gu");
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return src.replace(regExp, a => a === target ? replacement : a);
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@@ -59,3 +59,19 @@
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console.log(dst);
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```
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target や ignore にメタ文字が含まれておらず、無視する単語が一つということがどちらも保証されているなら、次のように簡単に書いてもいいでしょう。
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```js
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const f = (src, target, ignore, replacement) => {
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return src.replace(new RegExp(`${ignore}|${target}`, "gu"), a => a === target ? replacement : a);
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};
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```
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4
リファクタリング
test
CHANGED
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@@ -44,7 +44,7 @@
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44
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const f = (src, target, ignore, replacement) => {
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46
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47
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-
const searchValue = ignore.concat(target).map(
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47
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const searchValue = ignore.concat(target).map(escapeRegularExpression).join("|");
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const regExp = new RegExp(searchValue, "g");
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3
リファクタリング
test
CHANGED
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@@ -44,9 +44,7 @@
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44
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const f = (src, target, ignore, replacement) => {
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47
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-
const targetValue = escapeRegularExpression(target);
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48
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const searchValue = ignore.
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47
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const searchValue = ignore.concat(target).map(a => escapeRegularExpression(a)).join("|");
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const regExp = new RegExp(searchValue, "g");
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2
修正
test
CHANGED
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@@ -50,7 +50,7 @@
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const regExp = new RegExp(searchValue, "g");
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-
return src.replace(regExp, a => a === target
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return src.replace(regExp, a => a === target ? replacement : a);
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};
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1
追記
test
CHANGED
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@@ -25,3 +25,39 @@
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25
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const dst = src.replaceAll(/山梨県|二十世紀梨|梨/g, a => a === "梨" ? "りんご" : a);
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```
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以上を関数化すると次のようになります。
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```js
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const escapeRegularExpression = re => {
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return re.replace(/[\^$*+?.(){[|]/g, a => `\${a}`);
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};
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const f = (src, target, ignore, replacement) => {
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const targetValue = escapeRegularExpression(target);
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const searchValue = ignore.reduce((previousValue, currentValue) => `${escapeRegularExpression(currentValue)}|${previousValue}`, targetValue);
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const regExp = new RegExp(searchValue, "g");
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return src.replace(regExp, a => a === targetValue ? replacement : a);
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};
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59
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const dst = f("特に山梨県の梨はみずみずしくて美味い", "梨", ["山梨県"], "りんご");
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60
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console.log(dst);
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63
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```
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