Greetings everyone! I am seeking some advice on regex as I continue to learn more about it. My query is this: In JavaScript, how can I replace or delete all characters except for the first one in a string?
For example, let's say I have the string "apple" and I only want to keep the first character "a".
To eliminate all characters except the first one(s) in a string, there is no requirement for regular expressions.
Simply utilize the .slice() method:
'banana'.slice(0, 1);
// 'b'
You also have the option to directly access the first character by using the .charAt() method:
'banana'.charAt(0);
// 'b'
If you prefer using the .replace() method, you can implement the following approach:
'banana'.replace(/(^.).*/, '$1');
// 'b'
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