js parse bool

1let bool = "True";
2JSON.parse(bool.toLowerCase());

1stringToBoolean: function(string){
2    switch(string.toLowerCase().trim()){
3        case "true": case "yes": case "1": return true;
4        case "false": case "no": case "0": case null: return false;
5        default: return Boolean(string);
6    }
7}

1var isHidden='true';
2var isHiddenBool = (isHidden == 'true');

1function parseBool(value) {
2    if (typeof value === "string") {
3        value = value.toLowerCase();
4        if (value === "true" || value === "false") {
5            return value === "true";
6        }
7    }
8    return; // returns undefined
9}

1const stringBools = [
2  'true',
3  'false',
4  'asdf'
5];
6const bools = [];
7
8for (const i = 0; i < stringBools.length; i++) {
9  const stringBool = stringBools[i];
10  if (stringBool == true) {
11    bools.push(true);
12  } else if (stringBool == false) {
13    bools.push(false);
14  } else {
15    bools.push(null /* Change if you like */);
16  }
17}