javascript - Find a js regular rule: only numbers and English periods can be entered, not two consecutive dots, and cannot start or end with "."
Find a regular rule to use for ip fuzzy search in the text boxUse
The correct approximate format is:
1.1
1.11.1
1.1.11
Satisfy the following filter items:
Cannot start with ".": .1.1.11
Cannot end with ".": 1.1.11.
Cannot have 2 consecutive ".": 1. .1.11
cannot contain symbols other than the English period ".": 1@1.1
cannot contain spaces: 1 .1 .1
cannot contain letters or Chinese characters
Only 1 number can pass
Because I am not very good at regular expressions, I use a stupid method to eliminate them step by step. My idea is to first remove the inner and outer spaces:
1. Remove the inner spaces: /^S*$/
2. Remove spaces on both sides:
while((value.indexOf(" ") == 0) && (value.length > 1)) {
return false;
}
while((value.lastIndexOf(" ") == value.length - 1) && (value.length > 1)) {
return false;
}3. Then exclude symbols: /<|>|||*|?|\|"|/|&|#|@|!|~|(|)/;
4. Remove Chinese The regular rules: /^[u4e00-u9fa5] $/;
It won’t be used later, and I feel that these methods are very cumbersome and redundant. Is there any regular rules that can solve this problem? Thank you!
