JSFiddle - React, Tailwind, and code Playground
JavaScript
var class1 = function(){
this.attr1 = 'test1';
}
var class2 = function(c1){
this.attr1 = 'test2';
this.function(){
alert(this.attr1);
}.bind(c1);
}
var c1 = new class1();
var c2 = new class2(c1);