<!DOCTYPE html>
<html>
<head><script type="text/javascript">
function onPaste(eve) {
try {
var txt = e.clipboardData.getData('text/plain');
alert(txt);
} catch (err) {
}
} </script> </head><body>
<textarea cols=60 name="inputUsaaNum" onpaste="onpaste(event);"></textarea></body></html>
please help to validate the clipboard data from text area, i need to identify the whaether it has any spacial character and also i want to delimit the values with help of carriage return('\r'), please help????
According to your last comments you want something like this:
txt.replace(/[^1-9_\t ]/g,'').replace(/[\t]/g,'\r');
This will first replace everything that is not 1 to 9 or _ or space or a tab with '', then it will replace all tabs with \r. Why did I include tabs, well the asker specifies excel data.
Good Luck!!
Update for your comments:
if (txt.match(/[^1-9_\t ]/g)) {
alert('error');
} else {
txt=txt.replace(/[\t]/g,'\r');
}
Related
I have a VERY BASIC knowledge of javascript and I was looking forward to learn some conditional statement in javascript. So I went on and entered this code in a HTML file called "index.html":
<!DOCTYPE html>
<html>
<head>
<title>A sample webpage</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>
And the result that came was completely normal. A title called "Sample Webpage" appeared.
But the next code what I entered created problems in the result,
var myNumber = window.prompt("Enter number: ");
parseFloat(myNumber);
document.write(myNumber);
The result comes as expected.
if (myNumber > 15) {
document.write(<p>Good! You've passed! </p>);
}
else {
document.write(<p>You failed! Try again next time.</p>);
}
But when I add this if statement which gives an output based on the user's input, I get a blank page. I don't understand what is the reason for this. Are there any problems in the syntax?
It also seems to me that it doesn't execute the first part of the code I've written, it completely wants all of the code. I feel this is normal but doesn't it have to actually execute the "document.write" code?
Way I see it, you need to quote your strings in document.write(string).
like this:
if (myNumber > 15) {
document.write("<p>Good! You've passed! </p>");
}
else {
document.write("<p>You failed! Try again next time.</p>");
}
I hope it is useful for you. Thank you.
document.write takes a string as argument. You pass it HTML.
Just change
document.write(<p>Good! You've passed! </p>);
to
document.write('<p>Good! You've passed! </p>');
to make it work. A better approach is to add
<p id="message"></p>
to the page and where you have
document.write('<p>Good! You've passed! </p>');
you can use
document.getElementById('message').textContent='Good! You've passed!';
document.getElementById("myButton").addEventListener('click', function() { // when clicked
let myNumber = window.prompt("Enter number: ");
myNumber = parseFloat(myNumber); // convert to number from string
document.getElementById('number').textContent = myNumber;
const msg = document.getElementById('number'); // output container
if (myNumber > 15) {
msg.textContent = 'Good! You\'ve passed!' // escaping the quote
}
else {
msg.textContent = 'You failed! Try again next time.';
}
});
// above can be written using a so called ternary:
// msg.textContent = myNumber > 15 ? 'Good! You\'ve passed!' : 'You failed! Try again next time.'
<!DOCTYPE html>
<html>
<head>
<title>A sample webpage</title>
</head>
<body>
<p id="number"></p>
<p id="message"></p>
<button type="button" id="myButton">Did you pass?</button>
<script src="script.js"></script>
</body>
</html>
This question already has answers here:
How to append text to a div element?
(12 answers)
Closed 5 years ago.
<a id="Param">This is an html element</a>
<script>
function Append(param1,text)
{
if(document.getElementById(param1))
{
return document.getElementById(param1)+text;
}
else
{
console.error("the element was not found");
}
}
var app1=Append("Anything",". yes"); //i called the append twice first is to see the output when false
var app2=Append("Param",". hi")//second is to see the output when true. I want the output to be "This is an html element. hi"
this is the code that I have. I wanted to have a function that uses two parameters. The first one is to for an html element id and the second one is for the text that will be appended to the first parameter. How can the function check if "Param" is an id without hard coding or using jquery?
A string-query might be your best bet by making the PARAM dynamic and you can change it based on what the url passes to the script. index.php?param1=myvalue
Here is a reference article I used last time I had to do it myself: https://www.joezimjs.com/javascript/3-ways-to-parse-a-query-string-in-a-url/
Respectfully,
SFR
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Lab Test 1</title>
</head>
<body>
<a id="Param">This is an html element</a>
<script>
function appendToElement(p1,p2)
{
var el=document.getElementById(p1);
if(el)
{
el.innerHTML+=p2;
return true;
}
else
{
console.error("Element with ID: "+p1+" not found");
return false;
}
}
var app1=appendToElement("Anything",". yes");
var app2=appendToElement("Param",". hi")
</script>
</body>
</html>
This is the code that I got from my professor.
I'm trying to learn basic HTML and Javascript, and am not sure what is wrong with this code. It is probably a very simple error and I'm sorry if it is. When I try clicking the buttons, Chrome says in the console that "correct" and "incorrect" are not defined, but I have checked the syntax for the functions and I can't see what is wrong. Thanks for your help :)
<!DOCTYPE html>
<html>
<head>
<title>Question 1</title>
</head>
<body>
<p>Q1: What is the height of the Eiffel Tower?</p>
<br>
<script>
function incorrect()
{
document.getElementById("feedback").innerHTML =
"incorrect!
<br>
Next Question";
}
function correct()
{
document.getElementById("feedback").innerHTML =
"Correct!
<br>
Next Question";
}
</script>
<button onclick="incorrect()">767m</buttton>
<br>
<button onclick="incorrect()">442m</button>
<br>
<button onclick="correct()">324m</button>
<br>
<button onclick="incorrect()">278m</button>
<p id="feedback"></p>
</body>
You have confusing ""(double quotes) in the innerHTML strings. Try this:
instead of "q2.htm" use 'q2.htm'
<script>
function incorrect()
{
document.getElementById("feedback").innerHTML =
"incorrect!<br><a href='q2.htm'>Next Question</a>";
}
function correct()
{
document.getElementById("feedback").innerHTML =
"Correct!<br><a href='q2.htm'>Next Question</a>";
}
</script>
If you look at the console log in Chrome (press F12 to enter Developer Tools where you can see the log), you will see an error message “Unexpected token ILLEGAL”. The reason is that you have line breaks inside a JavaScript string, which is not permitted, so the function definitions fail in parsing. Moreover, you are using quotes inside a quoted string, which isn’t permitted either. Use single quotes (') as inner quotes or (in this case) just omit them, e.g.
function incorrect()
{
document.getElementById("feedback").innerHTML =
"incorrect!<br><a href=q2.htm>Next Question</a>";
}
This works:
<script>
function incorrect()
{
document.getElementById("feedback").innerHTML =
"incorrect!<br><a href='q2.htm'>Next Question</a>";
}
function correct()
{
document.getElementById("feedback").innerHTML =
"Correct!<br><a href='q2.htm'>Next Question</a>";
}
</script>
You have to put them on the same line or use concatenation.
So, I've found this JSFiddle example. In JSFiddle works well, the problem is that, even if I search any != from "advogados" (just testing), the browser goes to: http://www.site.com/index.html?procura=teste
No jQuery conflict, no html issue.
Here's JS
$("#procura").on("submit", function(event){
// prevent form from being truely submitted
event.preventDefault();
// get value of text box
name = $("#procura_texto").val();
// compare lower case, as you don't know what they will enter into the field.
if (name.toLowerCase() == "advogados")
{
//redirect the user..
window.location.href = "http://jornalexemplo.com.br/lista%20online/advogados.html";
}
else
{
alert("no redirect..(entered: " + name + ")");
}
});
If your javascript is somewhere in your HTML before your <form> your $("#procura") will be an empty set, so the submit-action won't be bound to anything. Try following code:
<html>
<head>
<script type="text/javascript" src="/path/to/your/jquery.js"></script>
<script type="text/javascript">
$(function() {
// This code will be run if your document is completely
// parsed by the browser, thus all below elements are
// accessible
$('#procura').on('submit', ....);
});
</script>
</head>
<body>
<form id="procura">...</form>
</body>
</html>
$(function() {}) is also known as $(document).ready(function() {}), (documentation)
You aren't defining the variable name. http://jsfiddle.net/zwbRa/59/
var name = $("#procura_texto").val();
I have a javascript method which is receiving a UTF-8 encoded string (ViewBag.errorText), and uses this as a parameter to a new function.
The problem is that the text displayed in show_error_dialog is displaying the html escaped characters (æø etc') and not the intended ("æåø" etc.).
I presume the problem is the enclosed <text> tags but can't seem to get around this.
<script type="text/javascript" charset="utf-8">
function performLoadOperations() {
#if(ViewBag.errorText!= null) {
<text>show_error_dialog('#ViewBag.errorText');</text>
}
}
</script>
I think all Razor-inserted text is HTML-encoded by default. Use Html.Raw() to pass the string unencoded.
<script type="text/javascript" charset="utf-8">
function performLoadOperations() {
#if(ViewBag.errorText!= null) {
<text>show_error_dialog('#Html.Raw(ViewBag.errorText)');</text>
}
}
</script>
Use:
#Html.Raw(Ajax.JavaScriptStringEncode(Model))
to safely insert values into javascript
just use javascript escape function:
function encode_utf8( s )
{
return unescape( encodeURIComponent( s ) );
}
function decode_utf8( s )
{
return decodeURIComponent( escape( s ) );
}
I'm not sure but i think there was unescape() function with js. Try to pass your text with it. It might help