如何确保添加javascript而不是字符串连接（并不总是添加整数） [英] How to ensure javascript addition instead of string concatenation (Not always adding integers)

问题描述

通过我的javascript库，我最终得到一个代表数字的字符串。现在我想在不进行字符串连接的情况下对该数字进行预处理。解决方案很简单（
如何使用javascript（jquery）将整数值添加到返回字符串的值？，如何进行添加而不是连接。但是我的字符串可能是浮点数或整数，并且在添加时，我不知道它将是什么。有没有办法确保添加发生，无论它是浮点数还是整数？

Through my javascript library, I end up with a string that represents a number. Now I want to preform an addition on that number without it doing a string concatenation instead. The solution is easy ( How do I add an integer value with javascript (jquery) to a value that's returning a string?, How to make an addition instead of a concatenation) if your number is always in integer. However my string could be a float or an integer, and at the time of the addition, and I don't know which it will be. Is there a way to make sure the addition happens regardless of whether it's a float or integer?

推荐答案

尝试使用 parseFloat 。输入变量将转换为浮点数，无论字符串是包含整数还是浮点数，都将起作用。你的结果总是浮动的。

Try using parseFloat. The input variables will be converted to floats, which will work whether the string contains an integer or a float. Your result will always be a float.

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