if use big number in "alert" or "console.log" return bad result. Example:
如果在“alert”或“console.log”中使用大数字返回错误结果。例：
alert(999999999999999999);
Result:
结果：
1000000000000000000
But we dont have any problem on alert(999999999999999); or alert(99999999999999999999999999999);
但我们在警报时没有任何问题（999999999999999）;或警报（99999999999999999999999999999）;
1 个解决方案
#1
4
As the maximum integer in js is 253 or 9007199254740992 (see the link Jonathan Lonowski mentioned: What is JavaScript's Max Int? ) every number that exceeds this limit is not an integer anymore but a float.
由于js中的最大整数是253或9007199254740992（参见Jonathan Lonowski提到的链接：什么是JavaScript的Max Int？），超过此限制的每个数字不再是整数，而是浮点数。
As you can only represent certain numbers using floats. The result of an input value that is larger then an integer would - most of the time - be an aproximated one. That's why you get those results when you alert or console.log.
因为你只能用浮点数表示某些数字。输入值大于整数的结果 - 大部分时间 - 是一个近似的结果。这就是您在发出警报或console.log时获得这些结果的原因。
#1
4
As the maximum integer in js is 253 or 9007199254740992 (see the link Jonathan Lonowski mentioned: What is JavaScript's Max Int? ) every number that exceeds this limit is not an integer anymore but a float.
由于js中的最大整数是253或9007199254740992（参见Jonathan Lonowski提到的链接：什么是JavaScript的Max Int？），超过此限制的每个数字不再是整数，而是浮点数。
As you can only represent certain numbers using floats. The result of an input value that is larger then an integer would - most of the time - be an aproximated one. That's why you get those results when you alert or console.log.
因为你只能用浮点数表示某些数字。输入值大于整数的结果 - 大部分时间 - 是一个近似的结果。这就是您在发出警报或console.log时获得这些结果的原因。