Creating and appending with javascript

creating-appending.js

// Test variant 1
var bestelButton = document.getElementById('ID').getElementsByClassName('CLASS')[0];
var bestelBlock = document.createElement('p');
var bestelText = document.createTextNode('TEXT');

bestelBlock.appendChild(bestelText);
bestelButton.appendChild(bestelBlock);

// Test variant 2
var bestelButton = document.getElementById('ID');
bestelButton.innerHTML = 'Ga verder';

// Test variant 3
var bestelButton = document.getElementById('ID').getElementsByClassName('CLASS')[0];
var changeText = document.getElementById('ID').innerHTML = 'Ga verder';

var bestelBlock = document.createElement('p');
var bestelText = document.createTextNode('TEXT');

bestelBlock.appendChild(bestelText);
bestelButton.appendChild(bestelBlock);