Answers for "check if string is in string js"

check for substring javascript

const string = "javascript";
const substring = "script";

console.log(string.includes(substring));  //true

angular string contains

const string = "foo";
const substring = "oo";

console.log(string.includes(substring));

angular string contains

var string = "foo";
var substring = "oo";

console.log(string.indexOf(substring) !== -1);

if is a string javascript

function isString(x) {
  return Object.prototype.toString.call(x) === "[object String]"
}