JAVASCRIPT: Add target="_blank" to links within specificied div(s)

target_blank.js

// Specify div(s)
const fieldNames = ['.more-link', '#featured-posts a', '.page-link a'];

// Select div(s)
const selectFields = fieldNames.map((field) => document.querySelectorAll(field));

selectFields.forEach((e, i) => {
  if (selectFields[i].length > 0) {
    // Get links within a specificied div
    const linkArray = Array.prototype.slice.call(e);
    
    // Add target="_blank" attribute to links
    linkArray.forEach((link) => link.setAttribute('target', '_blank'));
  }
});