So let's say i have a variable that stores a big string and where the
is the separator to the next word. whats the best way to eliminate duplicate words using the
as the indicator.
So imagine we have this:
var notRemoved= " I am col 1
I am col 2
I am col 11
I am col 1
I am col 2
And the result should be like this:
var removed= " I am col 1
I am col 2
I am col 11 "
This one has answer here : Get all unique values in a JavaScript array (remove duplicates)
Try this:
function onlyUnique(value, index, self) {
return self.indexOf(value) === index;
}
// usage example:
var a = ['a', 1, 'a', 2, '1'];
var unique = a.filter(onlyUnique);
console.log(unique); // ['a', 1, 2, '1']
The best way to perfom what you want is by :
String into an arraySet)join method.const notRemoved = `I am col 1
I am col 2
I am col 11
I am col 1
I am col 2`
function removeDuplicatesFromString(str){
const splitArray = notRemoved.split('\n')
const arrayWithoutDuplicates = [...new Set(splitArray)];
return arrayWithoutDuplicates.join('\n')
}
console.log(removeDuplicatesFromString(notRemoved))Note : This can also be done using one line :
let removed = [...new Set(notRemoved.split('\n')].join('\n');