如何在不使用库的情况下在JavaScript中的另一个元素之后插入一个元素？

#1 楼

referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);

function insertAfter(newNode, referenceNode) {
    referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}

 function insertAfter(referenceNode, newNode) {
  referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}

var el = document.createElement("span");
el.innerHTML = "test";
var div = document.getElementById("foo");
insertAfter(div, el); 

 <div id="foo">Hello</div> 

#2 楼

element.parentNode.insertBefore(newElement, element);

element.parentNode.insertBefore(newElement, element.nextSibling);

Element.prototype.appendBefore = function (element) {
  element.parentNode.insertBefore(this, element);
},false;

Element.prototype.appendAfter = function (element) {
  element.parentNode.insertBefore(this, element.nextSibling);
},false;

 /* Adds Element BEFORE NeighborElement */
Element.prototype.appendBefore = function(element) {
  element.parentNode.insertBefore(this, element);
}, false;

/* Adds Element AFTER NeighborElement */
Element.prototype.appendAfter = function(element) {
  element.parentNode.insertBefore(this, element.nextSibling);
}, false;


/* Typical Creation and Setup A New Orphaned Element Object */
var NewElement = document.createElement('div');
NewElement.innerHTML = 'New Element';
NewElement.id = 'NewElement';


/* Add NewElement BEFORE -OR- AFTER Using the Aforementioned Prototypes */
NewElement.appendAfter(document.getElementById('Neighbor2')); 

 div {
  text-align: center;
}
#Neighborhood {
  color: brown;
}
#NewElement {
  color: green;
} 

 <div id="Neighborhood">
  <div id="Neighbor1">Neighbor 1</div>
  <div id="Neighbor2">Neighbor 2</div>
  <div id="Neighbor3">Neighbor 3</div>
</div> 

#3 楼

elementBefore.insertAdjacentHTML('afterEnd', elementAfter.outerHTML)

#4 楼

// create function, it expects 2 values.
function insertAfter(newElement,targetElement) {
    // target is what you want it to go after. Look for this elements parent.
    var parent = targetElement.parentNode;

    // if the parents lastchild is the targetElement...
    if (parent.lastChild == targetElement) {
        // add the newElement after the target element.
        parent.appendChild(newElement);
    } else {
        // else the target has siblings, insert the new element between the target and it's next sibling.
        parent.insertBefore(newElement, targetElement.nextSibling);
    }
}

#5 楼

<!-- refElem.insertAdjacentElement('beforebegin', moveMeElem); -->
<p id="refElem">
    <!-- refElem.insertAdjacentElement('afterbegin', moveMeElem); -->
    ... content ...
    <!-- refElem.insertAdjacentElement('beforeend', moveMeElem); -->
</p>
<!-- refElem.insertAdjacentElement('afterend', moveMeElem); -->

#6 楼

#7 楼

 Element.prototype.insertAfter = function(new) {
    this.parentNode.insertBefore(new, this.nextSibling);
}
 

 function insertAfter(el, newEl) {
    el.parentNode.insertBefore(newEl, this.nextSibling);
}

// use

const el = document.body || document.querySelector("body");
// the || means "this OR that"

el.insertBefore(document.createElement("div"), el.nextSibling);
// Insert Before

insertAfter(el, document.createElement("div"));
// Insert After 
 

 // Parent Element
const el = document.querySelector(".class");

// Create New Element
const newEl = document.createElement("div");
newEl.id = "foo";

// Insert New Element BEFORE an Element
el.before(newEl);

// Insert New Element AFTER an Element
el.after(newEl);

// Remove an Element
el.remove();

// Even though it’s a created element,
// newEl is still a reference to the HTML,
// so using .remove() on it should work
// if you have already appended it somewhere
newEl.remove();
 

#8 楼

referenceNode.parentNode.insertBefore( newNode, referenceNode )
referenceNode.parentNode.insertBefore( referenceNode, newNode )

#9 楼

var element = document.getElementById('ElementToAppendAfter');
var newElement = document.createElement('div');
var elementParent = element.parentNode;

elementParent.insertBefore(newElement, element.nextSibling);

#10 楼

Node.prototype.insertAfter = function(newNode, referenceNode) {
    return referenceNode.parentNode.insertBefore(
        newNode, referenceNode.nextSibling); // based on karim79's solution
};

// getting required handles
var refElem = document.getElementById("pTwo");
var parent = refElem.parentNode;

// creating <p>paragraph three</p>
var txt = document.createTextNode("paragraph three");
var paragraph = document.createElement("p");
paragraph.appendChild(txt);

// now we can call it the same way as insertBefore()
parent.insertAfter(paragraph, refElem);

<div id="divOne">
    <p id="pOne">paragraph one</p>
    <p id="pTwo">paragraph two</p>
</div>

#11 楼

var d1 = document.getElementById('one');
d1.insertAdjacentHTML('afterend', '<div id="two">two</div>');

#12 楼

Node.prototype.insertAfter = function(node, referenceNode) {

    if (node)
        this.insertBefore(node, referenceNode && referenceNode.nextSibling);

    return node;
};

node.parentNode.insertAfter(newNode, node);

 // First extend
Node.prototype.insertAfter = function(node, referenceNode) {
    
    if (node)
        this.insertBefore(node, referenceNode && referenceNode.nextSibling);

    return node;
};

var referenceNode,
    newNode;

newNode = document.createElement('li')
newNode.innerText = 'First new item';
newNode.style.color = '#FF0000';

document.getElementById('no-children').insertAfter(newNode);

newNode = document.createElement('li');
newNode.innerText = 'Second new item';
newNode.style.color = '#FF0000';

document.getElementById('no-reference-node').insertAfter(newNode);

referenceNode = document.getElementById('no-sibling-after');
newNode = document.createElement('li');
newNode.innerText = 'Third new item';
newNode.style.color = '#FF0000';

referenceNode.parentNode.insertAfter(newNode, referenceNode);

referenceNode = document.getElementById('sibling-after');
newNode = document.createElement('li');
newNode.innerText = 'Fourth new item';
newNode.style.color = '#FF0000';

referenceNode.parentNode.insertAfter(newNode, referenceNode); 

 <h5>No children</h5>
<ul id="no-children"></ul>

<h5>No reference node</h5>
<ul id="no-reference-node">
  <li>First item</li>
</ul>

<h5>No sibling after</h5>
<ul>
  <li id="no-sibling-after">First item</li>
</ul>

<h5>Sibling after</h5>
<ul>
  <li id="sibling-after">First item</li>
  <li>Third item</li>
</ul> 

#13 楼

function insertAfter(parentNode, newNode, referenceNode) {
  parentNode.insertBefore(
    newNode,
    referenceNode ? referenceNode.nextSibling : parentNode.firstChild
  );
}

if (! Node.prototype.insertAfter) {
  Node.prototype.insertAfter = function(newNode, referenceNode) {
    this.insertBefore(
      newNode,
      referenceNode ? referenceNode.nextSibling : this.firstChild
    );
  };
}

#14 楼

// You could create a simple node
var node = document.createElement('p')

// And then get the node where you want to append the created node after
var existingNode = document.getElementById('id_of_the_element')

// Finally you can append the created node to the exisitingNode
existingNode.after(node)

 <!DOCTYPE html>
<html>
<body>
     <p id='up'>Up</p>
    <p id="down">Down</p>
  <button id="switchBtn" onclick="switch_place()">Switch place</button>
  <script>
    function switch_place(){
      var downElement = document.getElementById("down")
      var upElement = document.getElementById("up")
      downElement.after(upElement);
      document.getElementById('switchBtn').innerHTML = "Switched!"
    }
  </script>
</body>
</html> 

#15 楼

var raf, cb=function(){
    //create newnode
    var link=document.createElement('link');
    link.rel='stylesheet';link.type='text/css';link.href='css/style.css';

    //insert after the lastnode
    var nodes=document.getElementsByTagName('link'); //existing nodes
    var lastnode=document.getElementsByTagName('link')[nodes.length-1]; 
    lastnode.parentNode.insertBefore(link, lastnode.nextSibling);
};

//check before insert
try {
    raf=requestAnimationFrame||
        mozRequestAnimationFrame||
        webkitRequestAnimationFrame||
        msRequestAnimationFrame;
}
catch(err){
    raf=false;
}

if (raf)raf(cb); else window.addEventListener('load',cb);

#16 楼

#17 楼

 function insertAfter(newNode, referenceNode) {
        if(referenceNode && referenceNode.nextSibling && referenceNode.nextSibling.nodeName == '#text')
            referenceNode = referenceNode.nextSibling;

        if(!referenceNode)
            document.body.appendChild(newNode);
        else if(!referenceNode.nextSibling)
            document.body.appendChild(newNode);
        else            
            referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);            
    }

#18 楼

if( !Element.prototype.insertAfter ) {
    Element.prototype.insertAfter = function(item, reference) {
        if( reference.nextSibling )
            reference.parentNode.insertBefore(item, reference.nextSibling);
        else
            reference.parentNode.appendChild(item);
    };
}

#19 楼

// source: https://github.com/jserz/domPlus/blob/master/src/insertAfter()/insertAfter.js
Node.prototype.insertAfter = Node.prototype.insertAfter || function (newNode, referenceNode) {
  function isNode(node) {
    return node instanceof Node;
  }

  if(arguments.length < 2){
    throw(new TypeError("Failed to execute 'insertAfter' on 'Node': 2 arguments required, but only "+ arguments.length +" present."));
  }

  if(isNode(newNode)){
    if(referenceNode === null || referenceNode === undefined){
      return this.insertBefore(newNode, referenceNode);
    }

    if(isNode(referenceNode)){
      return this.insertBefore(newNode, referenceNode.nextSibling);
    }

    throw(new TypeError("Failed to execute 'insertAfter' on 'Node': parameter 2 is not of type 'Node'."));
  }

  throw(new TypeError("Failed to execute 'insertAfter' on 'Node': parameter 1 is not of type 'Node'."));
};