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allow only alphabets and underscore using javascript
I am开发者_C百科 allowing a string to contain only alphabets and underscore,but is i enter fist character as alphabet or underscore and later if i put any invalid character then this validation is bei[详细]
2022-12-26 21:14 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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