A Percise Parser

Thomas worked for a company based in Germany which was looking to expand internationally. Once they started servicing other locales, things started to break. It didn't take long to track the problem down to a very "percise" numeric parser. handleInput( value ){ let value_ = value; if( value.substring( 0, 1 ) === '+' ){ value_ = value.substring( 1 ); } value_ = value_.split( '.' ).join( '' ); if( this.usePercisionIfPercentage && value_.indexOf( ',' ) >= 0 ) { const parsedPreValue = value_.split( ',' )[ 0 ]; const parsedCommaValue = parseInt( value_.split( ',' )[ 1 ], 10 ) < 10 ? parseInt( value_.split( ',' )[ 1 ], 10 ) * 10 : value_.split( ',' )[ 1 ].substring( 0, 2 ); if( parsedCommaValue === 0 ) { value_ = parseInt( parsedPreValue, 10 ); } else { const parsedValue = parseInt( parsedPreValue + parsedCommaValue, 10 ); value_ = parseInt( parsedValue, 10 ) / 100; } } // do stuff with value_ }