contains substring javascript 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: contains substring javascript
var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}
//use indexOf (it returns position of substring or -1 if not found)
Example 4: js check if string contains character
"FooBar".includes("oo"); // true
"FooBar".includes("foo"); // false
"FooBar".includes("oo", 2); // false
Example 5: javascript includes
const pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// output: true
Example 6: javascript check if string contains a text substring
stringVariable.includes("Your Text");