Detect the browser version in Javascript

<HTML> <HEAD> <TITLE>Browser Detecti on</TITLE> </HEAD> <body> <SCRIPT LANGUAGE="JavaScript"> var browsername= navigator.appName var browserversion = navigator.appVersion if (browsername == "Microsoft Internet Explorer" ) { document. write(" You are using MS Internet Explorer version " + browserversion) } else { document. write(" You are using Netscape Navigator version " + browserversion) } </SCRIPT> </BODY> </HTML>
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Get the highest z-index in a page using javascript

Use the following javascript function to get the biggest ZIndex in a page if you need to add an element above all others. <script> function zin(){ var allElements = document.getElementsByTagName(’*’); var vaval=0 var vaz=0 for (var i = 0; i< allElements.length; i++){ if(navigator.appName.substring(0,5)=="Micro" && allElements[i].parentNode==document.documentElement.childNodes[1]){ vaz=allElements[i].currentStyle=’zIndex’ } if(navigator.appName.substring(0,5)!="Micro" && allElements[i].parentNode==document.documentElement.childNodes[1]){ vaz=getComputedStyle(allElements[i],null).getPropertyValue(’z-index’); } if(vaz>vaval){ vaval=vaz } […]
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Maintaining the position of an element using Javascript DOM

<script language="JavaScript" type="text/JavaScript"> function positionNavigation() { var nav = document.getElementById("navigation"); var x, y; var navwidth = 155; if (window.innerWidth) { x = window.innerWidth + window.pageXOffset – navwidth; y = window.pageYOffset + 10; } else { with (document.body) { x = clientWidth + scrollLeft – navwidth; y = scrollTop + 10; } } nav.style.left = x […]
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Positioning an element using Javascript DOM

function position() { var el = document.getElementById("element"); el.style.left = "0px"; el.style.posLeft = 0; el.style.top = "0px"; el.style.posTop = 0; } window.onload = position;   <h1>w3mentor</h1> <p>Some sample text. Some sample text. Some sample <div>Have what by scent. I with recommend it! I <a href="http://canadian-pharmacy4best.com">canadian pharmacy reviews 2015</a> for financial similar shown Mask. It Wen to […]
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Adding DOM elements via innerHTML in Javascript

<script language="JavaScript" type="text/JavaScript"> var nr = 1; function addItem() { var list = document.getElementById("list"); nr++; var newNode = "<li>Item " + nr + "</li>"; list.innerHTML += newNode; } </script> <ul id="list"><li>Item 1</li></ul> <input type="button" onclick="addItem();" value="Add item" />
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Create a table dynamically using Javascript

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Creating a list in DOM using Javascript

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Replace DOM nodes using Javascript

<script language="JavaScript" type="text/JavaScript"> var nr = 1; function addItem() { var list = document.getElementById("list"); var newNode = document.createElement("li"); nr++; var newTextNode = document.createTextNode("Item " + nr); newNode.appendChild(newTextNode); list.replaceChild(newNode, list.firstChild); } </script> <ul id="list"><li>Item 1</li></ul> <input type="button" onclick="addItem();" value="Replace item" />
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Clone nodes using Javascript

<script language="JavaScript" type="text/JavaScript"> var nr = 1; function addItem(cloneMode) { var list = document.getElementById("list"); var oldItem = list.firstChild; var newItem = oldItem.cloneNode(cloneMode); list.appendChild(newItem); } </script> <ul id="list"><li><a href="http://www.w3mentor.com/"> Item 1</a></li></ul> <input type="button" onclick="addItem(true);" value="Clone all" /> <input type="button" onclick="addItem(false);" value="Clone node only" />
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Setting attributes using Javascript

<script language="JavaScript" type="text/JavaScript"> var nr = 1; function addItem() { var list = document.getElementById("list"); var newNode = document.createElement("li"); var newLink = document.createElement("a"); newLink.setAttribute("href","http://www.w3mentor.com/"); nr++; var newTextNode = document.createTextNode("Item " + nr); newLink.appendChild(newTextNode); newNode.appendChild(newLink); list.appendChild(newNode); } </script> <ul id="list"><li>Item 1</li></ul> <input type="button" onclick="addItem();" value="Add item" />
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Creating and adding a text node to DOM using Javascript

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Adding nodes to the top of the list of DOM children using Javascript

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Adding nodes to DOM using Javascript

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Remove nodes from DOM Document using Javascript

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Retrieving information from node using Javascript

<script language="JavaScript" type="text/JavaScript"> window.onload = function() { var s = ""; with (document.getElementById("para")) { for (var i=0; i<childNodes.length; i++) { with (childNodes[i]) { s += nodeName + ": " + nodeValue + " (" + nodeType + ")\n"; } } } window.alert(s); } </script> <p id="para"><em>JavaScript</em> Examples</p>
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Accessing elements by tag name using Javascript

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Access an element by its ID using Javascript

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