create dynamic variable in javascript code example

Example 1: dynamic loop variable .each create hash javascript

for (var i = 0; i < coords.length; ++i) {
    this["marker"+i] = "some stuff";
}

Example 2: javascript dynamic variable name

var obj = {
  'prop1' : 'test1',
  'prop2' : 'test2'
}

var keys = Object.keys(obj);

for (let i = 0; i < keys.length; i++) {
  var key = keys[i];
  
  // Here you can use a string value as the property name
  var prop = obj[key];
}