Javascript 正在查找小数点后两位以内的数字的REGEXP

我正在尝试这个

/-?(?:\d+|\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/ /-？（？：\d+\d{1,3}（？：，\d{3}）+）？（？：\.\d+）$/ 但这需要两位以上的小数，而且它接受的值是“.00”

它应该接受以下值
100.00
00.00
0
100
1000000000.00
98173827827.82

它应该拒绝以下值 .00
10.098
87.89381938193819
9183983109.9283912
10.aa
adjbdjbdj

我对正则表达式不太熟悉

PS:-我正在尝试以下javascript代码。 因此，请将表达式仅限于javascript。

提前感谢

这个应该可以：

/^\d+(\.\d{1,2})?$/

我会这样做：

/-?(?:\d{1,3}(?:,?\d{3})+)?(?:\.\d{1,2})?$/

试试这个：

if (/^\d+([,.]\d{1,2})?$/im.test(value)) {
        alert("ACCEPTED\n" + value);
    } else {
        alert("REJECTED\n" + value);
    }
}

正则表达式解释

^\d+([,.]\d{1,2})?$

Assert position at the beginning of a line (at beginning of the string or after a line break character) (line feed, line feed, line separator, paragraph separator) «^»
Match a single character that is a “digit” (ASCII 0–9 only) «\d+»
   Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+»
Match the regex below and capture its match into backreference number 1 «([,.]\d{1,2})?»
   Between zero and one times, as many times as possible, giving back as needed (greedy) «?»
   Match a single character from the list “,.” «[,.]»
   Match a single character that is a “digit” (ASCII 0–9 only) «\d{1,2}»
      Between one and 2 times, as many times as possible, giving back as needed (greedy) «{1,2}»
Assert position at the end of a line (at the end of the string or before a line break character) (line feed, line feed, line separator, paragraph separator) «$»

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用于测试和可视化此正则表达式的功能-