如何将Int数转换为双数? [英] How to Convert Int number to Double number?
问题描述
使用Javascript:
如何将一个数字整数转换为双数字示例:
100 - > 100.00
JavaScript 中的所有数字都是 doubles:也就是说,它们被存储为64位IEEE-754双打。
那就是,目标是不要得到一个double:目标是获取格式为YYY.XX的数字的字符串reprsentation。为此,请考虑 Number.toFixed
,例如:
(100).toFixed(2)
/ pre>
结果是字符串(不是double!)
100.00
。在这种情况下,括号需要避免语法模糊(也可以写为100.0.toFixed
或100..to固定
),但如果100是变量,则不需要。
快乐编码。
Using Javascript:
How I can convert one number integer to Double Number Example:
100 -> 100.00
解决方案All numbers in JavaScript are doubles: that is, they are stored as 64-bit IEEE-754 doubles.
That is, the goal is not to get a "double": the goal is to get the string reprsentation of a number formatted as "YYY.XX". For that, consider
Number.toFixed
, for instance:(100).toFixed(2)
The result is the string (not a "double"!)
"100.00"
. The parenthesis are required to avoid a grammar ambiguity in this case (it could also have been written as100.0.toFixed
or100..toFixed
), but would not be required if 100 was in a variable.Happy coding.
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