Method setProperty

extensions/amp-script/0.1/amp-script.js:842–852

* @param {!Node} node * @param {string} property * @param {string} value * @return {boolean}

(node, property, value)

   * @return {boolean}
   */
  setProperty(node, property, value) {
    const prop = property.toLowerCase();

    // worker-dom's supported properties and corresponding attribute name
    // differences are minor, e.g. acceptCharset vs. accept-charset.
    if (this.purifier_.validateAttributeChange(node, prop, value)) {
      node[property] = value;
      return true;
    }
    return false;
  }

  /**
   * TODO(choumx): Make this method always return a Promise.