Introduction to using removeChild() to remove a node using javascript_javascript skills

removeChild(a) is used to delete existing elements in the document
Parameter a: the node to be removed

Copy code The code is as follows:

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< ;span>3

var oDiv = document.getElementById("guoDiv");
var firsChild = oDiv.firstElementChild ? oDiv.firstElementChild : oDiv. firstChild
var returnNode = oDiv.removeChild(firsChild); //Remove the first element and return the removed element
alert(returnNode.innerHTML); //1
var lastChild = oDiv.lastElementChild ? oDiv .lastElementChild : oDiv.lastChild;
returnNode = oDiv.removeChild(lastChild); //Remove the last element and return the removed element
alert(returnNode.innerHTML);//3