strip commas off from formatted digits to real number or integer

stripComma

// NOTE: ensure numString contains only validate value, e.g. only digits, comma and period allowed
function toReal( numString ) {
  if ( numString.contains('.') ) {                    // deem as real number with period within, regardless if comma exists
    return parseFloat(numString.replace(/,/g, ''));
  } else {
      return parseInt( numSring );                   // deem as integer, without period
  }
} 

Convert digit strings with comma to number -- 轉換具撇節號的數字成為真正的數字

example

var a = '123,456,789.32';
var b = '123456789.32';
var c = '123';

var output1 = toReal( a );          // return 123456789.32
var output2 = toReal( b );          // return 123456789.32
var output3 = toReal( c );            // return 123

Data from outer source like excel CVS output may contains digits with comma, which in JavaScript will be deemed as a string. Use stripComma() to convert it into real number.

由外部轉來的資料 (例如 Excel 的 CVS 輸出)，數字欄位中有時含已格式化的三位敝節符號，在 JavaScript 處理時會將它當作字串處理。使用 stripComma() 將這些資料轉成真正的數字。

注意： 使用 stripComma() 時需先確定資料祇含數字、逗點及句點