Answers for "what is contains in javascript"

65

javascript string contains

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

console.log(string.includes(substring));
Posted by: Guest on December-21-2019
29

javascript string contains

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)
Posted by: Guest on July-18-2019
4

.includes javascript

let storyWords = ['extremely literally actually hi bye okay']
let unnecessaryWords = ['extremely', 'literally', 'actually' ];

let betterWords = storyWords.filter(function(word) {
  return !unnecessaryWords.includes(word);
});
console.log(betterWords) // ['hi' 'bye' 'okay]
Posted by: Guest on June-14-2020

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