join first two elements in an array js code example

Example 1: join in array

var a = ['Wind', 'Water', 'Fire'];
a.join();      // 'Wind,Water,Fire'
a.join(', ');  // 'Wind, Water, Fire'
a.join(' + '); // 'Wind + Water + Fire'
a.join('');    // 'WindWaterFire'

Example 2: js array join

['h', 'e', 'y'].join('')
// hey