数字以科学计数法显示 [英] Number displays in scientific notation

问题描述

我的数据返回了json响应，但是当我尝试使用值(数字)之一时，响应将转换为科学计数法.我从来没有遇到过这样的事情，所以我将要发布正在发生的事情.

I am getting a json response back with my data but when I am trying to use one of the values (number) the response is converting to scientific notation. I never encountered something like this so I am just going to post what is happening.

当我使用console.log(response)时，该值看起来像doctorid":2015031216033174968087，而当我尝试使用Doctorid时，该值变为2.015031216033175e+21.即使使用console.log(response.doctorid)在控制台中输出值，也会发生这种情况.您知道什么可能导致这种行为吗?

When I use console.log(response) the value looks like that doctorid":2015031216033174968087 and when I am trying to use the doctorid the value becomes 2.015031216033175e+21. This happens even if I output the value in the console by using console.log(response.doctorid). Any idea what might be causing such a behavior?

推荐答案

与python和ruby不同，Javascript不支持任意精度的整数.可以在JS中准确表示的最大数值为 9007199254740991 .较大的数字具有近似的表示形式，并使用科学计数法转换为字符串.

Unlike python and ruby, Javascript doesn't support arbitrary precision integers. The maximal numeric value that can be exactly represented in JS is 9007199254740991. Bigger numbers have an approximate representation and are converted to strings using scientific notation.

避免这种情况的唯一方法是将ID编码为JSON中的字符串:

The only way to avoid that in your case is to encode IDs as strings in JSON:

"doctorid": "2015031216033174968087"

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