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【JSメモ】parseInt()関数 parseFloat()関数文字列を数値に変換

JavaScript

Last updated at 2019-05-20Posted at 2019-05-20

概要

parseInt()関数
文字列を指定の基数で解釈し10進数の整数へ変換する
parseFloat()関数
文字列を浮動小数点の数値に変換

使用方法

parseInt(文字列,基数)
parseFloat(文字列)

使用例

>parseInt('123',10);
123

>parseInt('123',8);
83

>parseInt('123',16);
291

>parseFloat('12.3');
12.3

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