Need regex for following combination.
Only Numbers
Max 2 digit after decimal
following types of range available
58.95>2.5<5.65>=4.24<=7.21.2-3.2i tried below regex which accept number, two decimal no and should not end with <>=. special characters.
/^(?!.*<>=.$)[0-9]+(\.[0-9]{1,2})?$/gm
Need regex for range values
You could match either a single occurrence of a number preceded by a combination of <>= or match 2 numbers with a hyphen in between.
^(?:(?:[<>]=?)?\d+(?:\.\d{1,2})?|\d+(?:\.\d{1,2})?-\d+(?:\.\d{1,2})?)$
^ Start of string(?: Non capture group for the alternation
(?:[<>]=?)? Optionally match < > <= >=\d+(?:\.\d{1,2})? Match 1+ digits with optional decimal part of 1-2 digits| Or\d+(?:\.\d{1,2})?-\d+(?:\.\d{1,2})? Match a digits format with a hyphen in between) Close group$ End of stringSee a regex demo
const pattern = /^(?:(?:[<>]=?)?\d+(?:\.\d{1,2})?|\d+(?:\.\d{1,2})?-\d+(?:\.\d{1,2})?)$/;
[
"5",
"8.95",
">2.5",
"<5.65",
">=4.24",
"<=7.2",
"1.2-3.2",
"1-1.3",
"1-4",
">2",
">=4",
"2.5>",
"1.123"
].forEach(s => console.log(`${s} ==> ${pattern.test(s)}`));This regex does what you ask for. The test has first some matches, followed by non-matches:
const regex = /^(([><]=?)?[0-9]+(\.[0-9]{1,2})?|[0-9]+(\.[0-9]{1,2})?-[0-9]+(\.[0-9]{1,2})?)$/;
[
'1',
'12',
'12.2',
'12.34',
'>1.2',
'>=1.2',
'<1.2',
'<=1.2',
'1.2-3.4',
'1.22-3.44',
'x1',
'1.234',
'1.222-3.444'
].forEach((str) => {
let result = regex.test(str);
console.log(str + ' ==> ' + result)
})Output:
1 ==> true
12 ==> true
12.2 ==> true
12.34 ==> true
>1.2 ==> true
>=1.2 ==> true
<1.2 ==> true
<=1.2 ==> true
1.2-3.4 ==> true
1.22-3.44 ==> true
x1 ==> false
1.234 ==> false
1.222-3.444 ==> false
>=4.24-3.2?^(?:(?:[<>]=?)?\d+(?:\.\d{1,2})?|\d+(?:\.\d{1,2})?-\d+(?:\.\d{1,2})?)$regex101.com/r/6bzGE9/1