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Convert Shift_JIS numbers into plain numbers via index and array

by Yurii Predborskyi

HTML

<div>
  Result: <span id='result'></span>
</div>

CSS

body {
  color: white;
}

JavaScript

let s = 'ご利用回数　５回　（９８０円／回）';
let spl = s.split('');

let conversionTable = ['０', '１', '２', '３', '４', '５', '６', '７', '８', '９'];
let res = spl.map(function(el) {
  if (conversionTable.indexOf(el) !== -1) {
  return conversionTable.indexOf(el);
  }
	return el;
}).join('');

console.log(res);

let result = /（(\d+)円／回）/.exec(res)

console.log(result)

if (result) document.getElementById('result').innerHTML= 'success! number: ' + result[1];