It appears that oncopy and onpaste do not work with iOS devices that support copy and paste now. Is there another means to bind to these events in javascript?
You didn't attached any code with your question, so I can't tell what was the actual issue.
Probably the issue is with your code.
I used the following html code and it is working perfectly. Please check with this:
<html>
<head>
<script type="text/javascript">
function read()
{
var name = document.getElementById('p').value;
alert('Hi: '+name);
}
function copy()
{
alert('Copy');
}
function paste()
{
alert('Paste');
}
</script>
</head>
<body oncopy='copy();' onpaste='paste();'>
<form>
<input type="text" name='m' id='p'/>
<input type="button" value="Submit" onclick='read();'/>
</form>
</body>
</html>
Related
I have a problem with an html page
here a simplified version of the page
<html>
<head>
<script type="text/javascript">
function maxLength()
{
console.log('maxLength');
}
</script>
</head>
<body>
<input type"text" onblur="maxLength()">
</body>
</html>
on onblur event I receive this error
Uncaught TypeError: maxLength is not a function
but if i call the function from console it works without errors and print 'maxLength'
Why?
The code there runs in the context of the input, which has defined maxLength.
Better developer tools would make it clearer:
maxLength is not a function at HTMLInputElement.onblur
Rename your function to something else or use a different way of attaching the event listener.
If you rename the function to something else it should work fine for you. The explanation is aptly given with Alex already. Example:
<html>
<head>
<script type="text/javascript">
function maximumLength()
{
console.log('maxLength');
}
</script>
</head>
<body>
<input type"text" onblur="maximumLength()">
</body>
</html>
when i trying to hide the element div while click on text box using javascript.but it can't.what is the error on my program .anyone suggest me a good one
<html>
<head>
<script>
function clear()
{
alert("hi");
document.getElementById("mails").style.display="none";
}
</script>
</head>
<body>
<input type="text" onfocus="clear();" />
<div id="mails">hii</div>
</body>
</html>
Instead of using function name as clear(), please use any other name.
clear method refers to obsolete document.clear() method so it does not call clear method written by you.
According to HTML5 Specification, clear() method must do nothing.
IT's very easy to hide elements if you use jQuery. This way, all you need to do is:
$('#mails').hide();
If you prefer using DOM, then you can try this:
<html>
<head>
<script>
function hideit()
{
alert("hi");
document.getElementById("mails").style.display="none";
}
</script>
</head>
<body>
<input type="text" onClick="hideit()" />
<div id="mails">hii</div>
</body>
</html>
Though clear is not a keyword but it seems some browser still supports document.clear & that may be stopping the clear function here . You can change the function name and try
function myF() {
document.getElementById("mails").style.display = "none";
}
<input type="text" onfocus="myF();" />
<div id="mails">hii</div>
I am to late but nevertheless I can agree brk. The clear() is blocked by a native function.
<html>
<head>
<script>
function clearFunction()
{
console.log("onfocus called");
document.getElementById("mails").style.display="none";
}
</script>
</head>
<body>
<input type="text" onfocus="clearFunction();" />
<div id="mails">hii</div>
</body>
</html>
I've a project where I scan a QR code, and it will then automatically print out information based on which code was scanned.
I have the scanner, and a printer. Each QR code is to correspond to a URL. I can get the scanner to fill an input field, and I can get an alert to show the information that was scanned. However, whenever I try to assign the URL it simply appends the information to the current URL, instead of replacing it.
I need it to replace the current URL. Does anyone know why it is doing this, and how to fix it?
<html>
<head><title>QR Printing</title></head>
<body onload="document.myform.mytextfield.focus();">
<form name="myform">
<input type="text" name="mytextfield" onchange="checkForm()">
</form>
<script type="text/javascript" language="JavaScript">
function checkForm() {
var field1 = document.forms['myform'].elements['mytextfield'].value;
alert(field1);
window.location.assign(field1);
}
</script>
</body>
</html>
Looks like the form is submitting. Cancel it.
<form name="myform" onsubmit="return false">
You want:
window.location = field1;
add return false; after window.location.assign(field1);
<html>
<head><title>QR Printing</title></head>
<body onload="document.myform.mytextfield.focus();">
<form name="myform">
<input type="text" name="mytextfield" onchange="checkForm()">
</form>
<script type="text/javascript" language="JavaScript">
function checkForm() {
var field1 = document.forms['myform'].elements['mytextfield'].value;
alert(field1);
window.location.assign(field1);
return false;
}
</script>
</body>
</html>
Neither of the solutions worked for me in chrome browser.
I have resolved this using:
setTimeout(function () { document.location.href = YourUrlLink }, 500);
Hope this helps who are seeking a solution for chrome browser issue.
I tried to open file dialog by 'oncontextmenu' event, but it didn't work! I can do this by other event, but only 'oncontextmenu' didn't work.
<html>
<head>
<script type="text/javascript">
function wrapper(ev)
{
ev.preventDefault();
document.getElementById('file').click();
return false;
}
</script>
</head>
<body>
<input id="button" type="button" oncontextmenu="wrapper(event)">
<input id="file" type="file">
</body>
</html>
I want to know solution or why it doesn't work.
Thanks for reading.
It doesn't work because some browsers disallow triggering file input programatically. See this question for numerous attempts of this with questionable success.
HTML
<div id="test"></div>
<input type="button" value="Go" onclick="test()" />
JavaScript
function test() {
alert("Test!");
}
Fiddle
http://jsfiddle.net/MVBrS/11/
Please look at this one, it is about jsfiddle code frames separation:
Inline event handler not working in JSFiddle
Of course, if you were running the same code embedded on plain HTML it works normally, having the alerted popup appearing.
<!DOCTYPE html>
<html>
<head>
<script>
function test() {
alert("Test!");
}
</script>
</head>
<body>
<div id="test"></div>
<input type="button" value="Go" onclick="test()" />
</body>
</html>
when you do
onclick="test()"
as an attribute of the input element, you are setting the result of the call test() (in your case 'null') as the click event handler
you probably want to do this
onclick="test"
instead, which will set the actual 'test' function as the handler,
or even better, follow the following guidelines: unbtrusive javascript or unobtrusive JS (2),.. you get the point ;)