Introduction to javaScript (JS) replacement node implementation ideas_javascript skills

Copy code The code is as follows: function createNode() { var pNode = document.createElement('p'); var tNode = document.createTextNode('Fireworks in Yangzhou in March' ); pNode.appendChild(tNode); document.body.appendChild(pNode); } function r() { var pNode = document.createElement('p') ; var tNode = document.createTextNode('The old friend Xici Yellow Crane Tower'); pNode.appendChild(tNode); //Get the node to be replaced var reNode = document.getElementsByTagName ('p')[0]; //This method is only applicable to IE browser //reNode.replaceNode(pNode, reNode); //Applicable to various browsers reNode.parentNode.replaceChild(pNode, reNode); } function reNode() { var oldNode = document.getElementsByTagName('p')[0]; //oldNode.parentNode What is returned is the parent node of the p node, here is the body //Then use the removeChild method of the body node to delete the oldNode node oldNode.parentNode.removeChild(oldNode); }