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javascriptregexletter

javascript (iQuery ) first letter is exclamation

I want to check is the first letter of variable a (! - Exclamation ) Have any here an example for me ? i found other things but not for first letter is exclamation. thanks so much for reply me

Solution 

  • //using regex
let a = "!variable";

let test = /!/.test(a);

if (test) console.log("there is \"!\" somewhere in \"a\" variable");

//or not using regex

let char = a.split("", 1)[0];

if (char == "!") console.log("first letter is \"!\"");

    The second part takes first letter and logs message if it is "!" , first part tests whole string in order to find "!". I'm not sure if there is a way to check that first letter is "!" using regex.