'firstChild' Example : firstChild « Javascript Properties « JavaScript Reference

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JavaScript Reference » Javascript Properties » firstChild 
'firstChild' Example

<!-- 
Example revised from 

The Web Programmer's Desk Reference
by Lazaro Issi Cohen and Joseph Issi Cohen 

ISBN: 1593270119
Publisher: No Starch Press 2004
-->    
<html>
<body>
<script language="JavaScript">
function newElem(myT) {
    var newI = document.createElement("LI")
    newI.innerHTML = myT
    return newI
}

function function1(form) {
    var newI = newElem(form.enter.value);
    var fLi = document.getElementById("myL").firstChild;
    document.getElementById("myL").replaceChild(newI, fLi);
}

function function2(form) {
    var newI = newElem(form.enter.value);
    var fLi = document.getElementById("myL").lastChild;
    document.getElementById("myL").replaceChild(newI, fLi);}
</script>
<form>
<input type="text" name="enter" size="50">
<button onClick="function1(this.form);"> Replace first item</button>
<button onClick="function2(this.form);"> Replace last item</button>
<ul id="myL"><li>First List Item</li><li>Second List Item</li></ul>
</form>
</body>
</html>

    
      
      
Related examples in the same category
1. 'firstChild' Syntax and Note
2. 'firstChild' is applied to
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