[javascript] How do I check whether an array contains a string in TypeScript?



Answers

You can use the some method:

console.log(channelArray.some(x => x === "three")); // true

You can use the find method:

console.log(channelArray.find(x => x === "three")); // three

Or you can use the indexOf method:

console.log(channelArray.indexOf("three")); // 2
Question

Currently I am using Angular 2.0. I have an array as follows:

var channelArray: Array<string> = ['one', 'two', 'three'];

How can I check in TypeScript whether the channelArray contains a string 'three'?




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