Q: How do you search for a regex pattern at the beginning of a string?

The meta character “^” matches the beginning of a particular string i.e. it matches the first character of the string. For example, The expression “^\d” matches the string/line starting with a digit. The expression “^[a-z]” matches the string/line starting with a lower case alphabet.

Question 1

How do you check if a string starts with a letter JavaScript?

Accepted Answer

JavaScript String startsWith() The startsWith() method returns true if a string starts with a specified string. Otherwise it returns false . The startsWith() method is case sensitive.

Question 2

How do you search for a regex pattern at the beginning of a string?

Accepted Answer

The meta character &ldquo;^&rdquo; matches the beginning of a particular string i.e. it matches the first character of the string. For example, The expression &ldquo;^\d&rdquo; matches the string/line starting with a digit. The expression &ldquo;^[a-z]&rdquo; matches the string/line starting with a lower case alphabet.

Question 3

What does ?= Mean in regular expression?

Accepted Answer

?= is a positive lookahead, a type of zero-width assertion. What it's saying is that the captured match must be followed by whatever is within the parentheses but that part isn't captured. Your example means the match needs to be followed by zero or more characters and then a digit (but again that part isn't captured).

Javascript regular expression match string to start with letter or number

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javascript

jquery

regex

match

bryan

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