Find which letters from the input match somewhere in array-CodePudding

I have an array of strings. A user typed “ztaf”. How can I use JavaScript to find which of the letters the user typed match somewhere in the array? The answer should be “taf”.

var array = [ "tofu", "fish", "meat" ];
var user_type = "ztaf";
var found = ""; // It should be "taf".

I have tried it, but it keeps saying there is no match.

CodePudding user response：

You can achieve this by using String.split() along with the Array.filter(), Array.join() and String.includes() methods.

Live Demo :

var array = ["tofu","fish","meat"];

var user_type = "ztaf";

var found = user_type.split('').filter(char => array.join().includes(char));

console.log(found.join(''));

CodePudding user response：

if array is a string then you can convert it into array using json parse


array = JSON.parse(array) // this will convert it into array


// here comes the actual code =>

var array = '\["tofu", "fish", "meat"\]'
var user_type = 'ztaf'

array = JSON.parse(array)
console.log(array)
found = ''
for (let i = 0; i < user_type.length; i  ) {  if(array.some(elem=>elem.contains(user_type[i]))) found  =user_type[i]
    }