javascript contains text code example

Example 1: javascript string contains

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

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

Example 2: js string contais

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

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

Example 3: javascript string contains

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

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

Example 4: js check if string contains character

if (your_string.indexOf('hello') > -1)
{
  alert("hello found inside your_string");
}