Is there any method or quick way to see which of the elements in an array exists in a string?
const myArray = ['foo', 'bar', 'baz'];
const myString = 'somelongbarstring';
In this example, bar from the array exists in myString, so I need to get bar given myArray and myString.
Use find with includes:
const myArray = ['foo', 'bar', 'baz'];
const myString = 'somelongbarstring';
const res = myArray.find(e => myString.includes(e));
console.log(res);If you want to find all items included in the string, swap out find for filter:
const myArray = ['foo', 'bar', 'baz'];
const myString = 'somelongbarstring-baz';
const res = myArray.filter(e => myString.includes(e));
console.log(res);If you want the index, use findIndex:
const myArray = ['foo', 'bar', 'baz'];
const myString = 'somelongbarstring';
const res = myArray.findIndex(e => myString.includes(e));
console.log(res);Multiple indexes is a little tricky - you'd have to use the Array.prototype.keys method to preserve the original indexes because filter returns a new array with new indexes:
const myArray = ['foo', 'bar', 'baz'];
const myString = 'somelongbarstring-baz';
const res = [...myArray.keys()].filter((e, i, a) => myString.includes(myArray[e]));
console.log(res);(You could also swap out e for i in the above function, but it's more understandable to do this because we're iterating through the keys.)
.filter for all
