Two string - JavaScript - new style - outer: forEach,

Twostring2.js

function processData(input) {
    var lines = input.split("\n");
    
    var count = lines.shift();
    
    outer:
    while (count--) {
        
        var A = lines.shift();
        var B = lines.shift();
        
        var letters = {};                
        
        A.split("").forEach(function(letter) { if (letter != '\r') letters[letter] = null; });
        var Bsplit = B.split("");
        for (var letter in Bsplit) {
            if (letters[Bsplit[letter]] === null) {
                console.log("YES");
                continue outer;
            }
        }
        
        console.log("NO");
    }
} 

process.stdin.resume();
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
    _input += input;
});

process.stdin.on("end", function () {
   processData(_input);
});