JAVASCRIPT

how to check for special characters in javascript

var format = /[!@#$%^&*()_+-=[]{};':"|,.<>/?]+/;

if(format.test(string)){
  return true;
} else {
  return false;
}

regex to check if string contains special characters javascript

var format = /[ `!@#$%^&*()_+-=[]{};':"|,.<>/?~]/;
//            ^                                       ^   
document.write(format.test("My@string-with(some%text)") + "<br/>");    //true
document.write(format.test("My string with spaces") + "<br/>");        //true 
document.write(format.test("MyStringContainingNoSpecialChars"));       //false

javascript check if string contains special characters

var email = "grepper@gmail.com";
if(email.includes("@")){
  console.log("Email is valid");
}
else{
  console.log("Email is not valid");
}
// includes return boolean, if your string found => true else => false