why will the method getLinkToFile not be invoked?
<html>
<head>
<title>test page for object fbcontrol</title>
</head>
<script type="text/javascript">
...
function getLinkToFile()
{
alert("alert");
}
...
</script>
<body onload="load()">
<INPUT TYPE="text" NAME="GetLink_textField" VALUE="Geben Sie den Dateipfad an!" SIZE=50>
<INPUT TYPE="button" NAME="GetLink_button" VALUE="Get link" onClick="javascript:getLinktoFile()">
</body>
</html>
The alert message is not shown! Whats the problem!?
you dont need the javascript: bit and the function has an upper case T on to :
<INPUT TYPE="button" NAME="GetLink_button" VALUE="Get link" onClick="getLinkToFile()">
will work fine
try this
onClick="getLinktoFile()"
when you use onclick attribute, you won't use 'javascript:' so:
<INPUT TYPE="button" NAME="GetLink_button" VALUE="Get link" onClick="getLinktoFile()">
Javascript is case-sensitive.
You have getLinkToFile() defined but are calling getLinktoFile (lowercase t in 'to').
Javascript is case-sensitive.
Your function name has an uppercase T.
Related
<html>
<head>
<script type="text/javascript">
function fire()
{
document.getElementById("submit1").addEventListner("click",sub,false);
}
function sub()
{
window.alert("submited");
}
window.addEventListener("load",fire,false);
</script>
</head>
<body>
<form action="#">
<input type="button" name="cal" value="Calculate" id="submit1"/>
</form>
</body>
</html>
I don't know where is the error in my code because I am not familiar with addEventListener method, can I know what is the difference between addEventListner and onsubmit ? addEventlistener must use in my code but I am familiar with onsubmit method only, how to change it to addEventListenr ?
You have a typo:
document.getElementById("submit1").addEventListner("click",sub,false);
document.getElementById("submit1").addEventListener("click",sub,false);
All I have to do is to show a number in a textbox and a button which add 10 every time I press it, here's my code (it doesn't work).
<head>
<script type="text/javascript">
var n=parseInt(ocument.forms["formNum"]["numero"].value);
document.getElementById("numero").value=n;
function sumar() {
n=document.forms["formNum"]["numero"].value+10;
document.forms["formNum"]["numero"].value=n;
}
function inicializar() {
n=document.forms["formNum"]["numero"].value=0;
}
</script>
</head>
<body>
<form name="formNum">
<p>
<input type="text" size="10" name="numero" id="numero" />
</p>
<p>
<input type="button" name="sumar" value="Sumar" onclick="sumar()" />
<input type="button" name="inicializar" value="Iniciar a 0" onclick="inicializar()" />
</p>
</form>
</body>
<body>
<script type="text/javascript">
function sumar(){
document.getElementById("numero").value = parseInt(document.getElementById("numero").value)+10;
}
function inicializar(){
document.getElementById("numero").value=0;
}
</script>
<form name="formNum">
<p>
<input type="text" size="10" name="numero" id="numero" value="0" />
</p>
<p>
<input type="button" value="Sumar" onclick="sumar()" />
<input type="button" value="Iniciar a 0" onclick="inicializar()" />
</p>
</form>
</body>
Five suggestions.
It is always better to give unique ids to your html elements.
Never name your HTML elements and javascript functions the same.
If you want to access the html element from javascript, if you know the id, use getElementById.
Use Firebug or Developer tools from the browser, to debug.
If you want to access your elements with the hierarchy, use elements in the form like this document.forms["formNum"].elements["numero"].value. Check this example
Demo: http://jsfiddle.net/DPJCR/
This code should work:
<input type="text" id="mytext">
<script type="text/javascript">
var elem = document.getElementById("mytext");
elem.value = "My default value";
</script>
See: Set the value of an input field
Maybe you are getting an exception from the parseInt that prevents the value from changing.
If it is an option to use jQuery, try this:
function sumar(){
$("#numero").attr("value", parseInt($("#numero").attr("value"), 10)+10);
}
Try this this will help you
var count=10;
$('#btnSumar').click(function(){
if($('#numero').val()=='')
{
$('#numero').val(count);
}else
$('#numero').val(eval($('#numero').val())+count);
});
$('#btnInc').click(function(){
$('#numero').val('');});
Fiddle here
here's a little code I try to run on Firefox:
<html>
<head>
<title>Ex4: My Sequence Finder</title>
<script type="text/javascript">
function action() {
alert("action");
if (formValidation() == false)
return;
}
function searchInput() {
alert("searchInput");
return;
}
</script>
</head>
<body>
<font face="arial" size="5" color="blue">Input section</font> <br/>
<p>Query Sequence</p>
<form name="form">
<textarea id="input" rows="8" cols="60"></textarea><br/>
<textarea id="enhancers" rows="4" cols="30"></textarea><br/>
<textarea id="silencers" rows="4" cols="30"></textarea><br/>
<input type="button" value="button1" onclick="action()" />
<input type="button" value="button2" onclick="searchInput()" />
<div id="results"></div>
</form>
</body>
</html>
As you can see one of the button calls searchInput() and that works fine, the other
is supposed to call action(), but I get "action() is not a function". Btw they both just call alert() at this point, so I know it got in the function.
I have no idea as to why this happens, any help would be great.
Thanks!
Form elements have an action attribute (specifying the URI that should process the form data).
This attribute name "overrides" the javascript function name, causing the error you see.
Rename your function to something else and it will work.
You can solve this by using
var function1 =new function(){
var action=new function() {
alert("action");
if (formValidation() == false)
return;
}
}
<input type="button" value="button1" onclick="function1.action()" />
action calls formValidation which doesn't seem to be a function. Maybe the parser took this error and chose not te register action as a function because of it.
i have Html document A.html and javascript file A.js, how to write a code in javascript within html body THAT SPECIFIES FUNCTION res AS THE EVENT HANDLER FOR THE onclick EVENT FOR THE BUTTON DEFINED IN THE FORM?
A.html-----------
<body>
<form>
<input type = "button" id="butt1" value = "Press for Results" /><br />
</form>
<script type="text/javascript">
</script>
</body>
This is a pretty poorly written question, but I think what you want to do is pretty straightforward. When you include an external script with
<script type="text/javascript" src="A.js"></script>
It's all there for the following execution. Thus if A.js has the following:
function res() {
...
}
You can use specify that in your HTML, as such:
<button onclick="res()" value="call res()">
I think this is what you mean..
a.html:
<head>
<script type="text/javascript" src="a.js"></script>
</head>
<body>
<form>
<input onclick="javascript:res();" type="button" id="butt1" value="Press for Results" /><br />
</form>
</body>
a.js:
function res()
{
alert("function logic to go here");
}
If you want all the code on the one page..
<head>
<script type="text/javascript">
function res()
{
alert("function logic to go here");
}
</script>
</head>
<body>
<form>
<input onclick="javascript:res();" type="button" id="butt1" value="Press for Results" /><br />
</form>
</body>
A.html
<script type="text/javascript" src="A.js">
<form>
<input type="button" name="test" value="Click me" onclick="inform()">
</form>
A.js
function inform(){
alert("You have activated me by clicking the grey button! Note that the event handler is added within the event that it handles, in this case, the form button event tag")
}
All at once
<script type="text/javascript">
function inform(){
alert("You have activated me by clicking the grey button! Note that the event handler is added within the event that it handles, in this case, the form button event tag")
}
</script>
<form>
<input type="button" id="button" name="test" value="Click me" onclick="inform()">
</form>
Calling function in javascript
if(condition in which you want onclick to b called)
document.getElementById('button').click();
Suppose I have the following HTML code, how can I pass the user's input to execute(str) JavaScript function as an argument?
<body>
<input name="textbox1" type="text" />
<input name="buttonExecute" onclick="execute(//send the user's input in textbox1 to this function//)" type="button" value="Execute" />
</body>
You could either access the element’s value by its name:
document.getElementsByName("textbox1"); // returns a list of elements with name="textbox1"
document.getElementsByName("textbox1")[0] // returns the first element in DOM with name="textbox1"
So:
<input name="buttonExecute" onclick="execute(document.getElementsByName('textbox1')[0].value)" type="button" value="Execute" />
Or you assign an ID to the element that then identifies it and you can access it with getElementById:
<input name="textbox1" id="textbox1" type="text" />
<input name="buttonExecute" onclick="execute(document.getElementById('textbox1').value)" type="button" value="Execute" />
As opposed to passing the text as a variable, you can use the DOM to retrieve the data in your function:
var text = document.getElementsByName("textbox1").value;
You could just get the input value in the onclick-event like so:
onclick="execute(document.getElementById('textbox1').value);"
You would of course have to add an id to your textbox
This is what I have done. (Adapt from all of your answers)
<input name="textbox1" type="text" id="txt1"/>
<input name="buttonExecute" onclick="execute(document.getElementById('txt1').value)" type="button" value="Execute" />
It works. Thanks to all of you. :)
if I have understood correct the question :
<!DOCTYPE HTML>
<HEAD>
<TITLE>Passing values</TITLE>
<style>
</style>
</HEAD>
Give a number :<input type="number" id="num"><br>
<button onclick="MyFunction(num.value)">Press button...</button>
<script>
function MyFunction(num) {
document.write("<h1>You gave "+num+"</h1>");
}
</script>
</BODY>
</HTML>
document.getElementById('textbox1').value
You can get textbox value and Id by the following simple example in dotNet programming
<html>
<head>
<script type="text/javascript">
function GetTextboxId_Value(textBox)
{
alert(textBox.value); // To get Text Box Value(Text)
alert(textBox.id); // To get Text Box Id like txtSearch
}
</script>
</head>
<body>
<input id="txtSearch" type="text" onkeyup="GetTextboxId_Value(this)" /> </body>
</html>