Javascript regex for integer only, not to start with 0 but allow 0

Question

I need a regex to validate integer numbers. `05 and 00` are not allowed but `0` is allowed. Currently I have this: ``` /^[1-9]\d*$/ ``` But it does not allow `0`. Thanks for help.

Accepted Answer

```
 ^(?:[1-9]\d*|0)$
```

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Javascript regex for integer only, not to start with 0 but allow 0

Solution

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