Regex for multiple conditions -

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this question has answer here:

i want regx following condition

1.combination of letters , digits should accept.

2.combination of letters , symbols should accept.

3.only letters should accept.

4.only digits should not accept.

5.only symbols should not accept.

6.combination of letters,digits,symbols should accept.

i trying this:

/^([a-za-z]+\s*)*[a-za-z]+$/

what wrong.

check regex 

^(?=.*[a-za-z])(.+)

demo


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