check if string contains substring javascript

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showing results for - "check if string contains substring javascript"
Riyad
29 Jun 2017
1const string = "javascript";
2const substring = "script";
3
4console.log(string.includes(substring));  //true
source
Simón
26 Jan 2020
1var string = "foo",
2    substring = "oo";
3
4console.log(string.includes(substring));
source
Eris
22 Apr 2016
1const string = "foo";
2const substring = "oo";
3
4console.log(string.includes(substring));
Teddy
20 Feb 2019
1var str = "We got a poop cleanup on isle 4.";
2if(str.indexOf("poop") !== -1){
3	alert("Not again");
4}
5//use indexOf (it returns position of substring or -1 if not found)
Alyssia
18 Jun 2017
1"FooBar".includes("oo"); // true
2
3"FooBar".includes("foo"); // false
4
5"FooBar".includes("oo", 2); // false
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