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GetElementsByName method
document.getElementsByName method in javascript used to get all the nodes has the give name as the parameter.
document.getElementsByName(name of the node)
<input type="text" name="txt_username" />
<input type="text" name="txt_username" />
<input type="text" name="txt_username" />
node means element here node is input. name is txt_username.
document.getElementsByName("txt_username") returns three nodes.
can get no of nodes by
document.getElementsByName("txt_username").length
document.getElementsByName("txt_username")[0]
document.getElementsByName("txt_username")[1]
document.getElementsByName("txt_username")[2]
to access the nodes.
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<html>
<head>
<title>getElementsByName example</title>
<script type="text/javascript">
function show(){
var userNames = document.getElementsByName("txt_username");
if (userNames.length != 0){
var userNameString = "";
for (var i=0;i<userNames.length;i++){
userNameString += userNames[i].value + "<br />";
}
document.write(userNameString);
}
else {
alert("No name found as txt_username");
}
}
</script>
</head>
<body>
<form id="frm_userinfo">
Name 1: <input type="text" name="txt_username" /><br />
Name 2: <input type="text" name="txt_username" /><br />
Name 3: <input type="text" name="txt_username" /><br />
</form>
<button onclick="javascript:return show();">Show</button>
</body>
</html> |
