Is there a way to determine if a string within an array includes any special characters?

Question

Is there a way to determine if a string within an array includes any special characters?

I am trying to determine if any string in an array contains special characters. I have experimented with various methods like RegExp, test, includes, and contains, but none of them give me the desired outcome. Instead, they all return false for every string.

let prodList: string[] = ['H&W', 'Tony$Talk', 'GP', '(Test*)'];
specialCharactersList = '/[!@#$%^&*()+\\-=[]{};':\"|,.<>/?`~';
for(var i = 0; i < prodList.length ; i++)
{
console.log(prodList[i].includes(specialCharactersList));
console.log(prodList[i].contains(specialCharactersList));
}

typescript

Answer 1

Answer №1

If you're looking to verify a string for special characters, it's not practical to list them all out. Instead, focus on testing for valid characters and comparing the string against your expectations.

This regular expression below verifies letters, digits, underscores, and spaces in a given string to see if only these characters are present:

let prodList: string[] = ['H&W', 'Tony$Talk', 'GP', '(Test*)'];
let specialCharactersList = /^[\w\s]*$/;
for(var i = 0; i < prodList.length ; i++)
{
  
console.log(specialCharactersList.test(prodList[i]));
}

The output will be:

false
false
true
false

Answer 2

If you're looking to verify a string for special characters, it's not practical to list them all out. Instead, focus on testing for valid characters and comparing the string against your expectations.

This regular expression below verifies letters, digits, underscores, and spaces in a given string to see if only these characters are present:

let prodList: string[] = ['H&W', 'Tony$Talk', 'GP', '(Test*)'];
let specialCharactersList = /^[\w\s]*$/;
for(var i = 0; i < prodList.length ; i++)
{
  
console.log(specialCharactersList.test(prodList[i]));
}

The output will be:

false
false
true
false

Is there a way to determine if a string within an array includes any special characters?

Answer №1

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