问题描述
我通过xml从mysql获取数据.一切都好.但是当我用JavaScript编写此坐标时，它向我显示了其他数字..它可以在哪里使用这些数字?
I get data from mysql by xml. Everything is ok. but when i wrote this coordinates with javascript it show me additional numbers.. where it can take this numbers?
那样:
它向我显示了这长时间..:(40.992638, 47.860474*00000007*),(40.992252, 47.860619*00000004*)
it show me this lat long.. : (40.992638, 47.860474*00000007*),(40.992252, 47.860619*00000004*)
但是我的朋友很喜欢这样:(40.992638 47.860474 ) (40.992252 47.860619)
but my lat longs like that: (40.992638 47.860474 ) (40.992252 47.860619)
什么是: **00000007 & 00000004 ?**
what is: **00000007 & 00000004 ?**
推荐答案
经度和纬度在JavaScript中表示为双精度浮点数(所有数字都是).将字符串转换为双精度浮点数时，会将其转换为最接近的值，该值不一定总是完全相同.第14位数字的差异可以忽略不计.
Latitudes and Longitudes are represented in javascript as double precision floating point numbers (all numbers are). When you convert a string to a double precision floating point number, it converts it to the closest value, which will not always be exactly the same. The difference in the 14th digit is negligible.
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