appendchild element once if element present in js

//insert new Element after some reference Element
function insertAfter(newElement, referenceElement) {
    referenceElement.parentNode.insertBefore(newElement, referenceElement.nextSibling);
}

//example usage
var newElement = document.createElement("div");
    newElement.innerHTML = "my New Div Text";
var myCurrentElement= document.getElementById("myElementID");
    insertAfter(newElement, myCurrentElement);

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3.9

Phoenix Logan 186120 points

                                    parentElement.insertBefore(newElement, parentElement.children[2]);

Thank you! 10

3.9 (10 Votes)

3.5

Awgiedawgie 440220 points

                                     &lt;script&gt;
       var button = false;
        function  myfun(){
            if ( button === false){
                var b1 = document.createElement(&quot;BUTTON&quot;);
                b1.innerHTML = &quot;Click Me&quot;;
                document.body.appendChild(b1); 
                return button = true;  
            }
      }
    &lt;/script&gt;
&lt;p id=&quot;demo&quot; onclick=&quot;myfun();&quot;&gt; click me to create button &lt;/p&gt;

Thank you! 2

3.5 (2 Votes)

4.4

Awgiedawgie 440220 points

                                     &lt;script&gt;
       var button = false;
        function  myfun(){
            if ( button === false){
                var b1 = document.createElement(&quot;BUTTON&quot;);
                b1.innerHTML = &quot;Click Me&quot;;
                document.body.appendChild(b1); 
                return button = true;  
            }
      }
    &lt;/script&gt;

Thank you! 5

4.4 (5 Votes)

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appendchild element once if element present in js

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