JavaScriptで正規表現を使って数字だけ取り出す。
const data = 'hoge123';
const res = data.replace(/[^0-9]/g, '');
console.log(res); // 123
g すべての一致に対して置換を実施。
gが大事みたいっす。
参考
http://mypaceprogram.blogspot.com/2017/11/javascript.html
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