I want to post a prompt value to a jsp.. but I can't run the jsp page... Are there any mistakes in my code?
I want to make a prompt for a user to insert a value, then straight away submit it to a JSP to run the calculation... but it can't run...
html
<html>
<head>
<title>Lab Exercise 1 for Lab 3</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<script>
var celcius = prompt("Pleae enter current temperature in celcius.");
if(celcius!==null){
$.post("calculation.jsp",
{temp:celcius},
);
}
</script>
</body>
Jsp
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Temperature Converter</title>
</head>
<body>
<h1>Celsius to Fahrenheit:</h1>
<%
String celsius = request.getParameter("temp");
double thecelsius = Double.parseDouble(celsius);
double fahrenheit = ((9/5)*thecelsius + 32);
%>
The temperature in Fahrenheit for <%=celsius%> celsius is <%=fahrenheit%>F.
</body>
You are using ajax so you need to return response back and then you can show result inside callback of ajax i.e :
var celcius = prompt("Pleae enter current temperature in celcius.");
if (celcius !== null) {
$.post("calculation.jsp", {
temp: celcius
}, function(data) {
//here data will come back ..
$("#result").text(data) //you can set some data to divs..
});
}
and your jsp will look like below :
<%
//other codes
//below will send back to ajax ...
out.println("The temperature in Fahrenheit for "+celsius+"celsius is "+fahrenheit+"F");
%>
Other way :
You can simply redirect to that page using window.location.href = "calculation.jsp?temp="+celcius . But , this will be GET request not POST .
Related
I am creating a google extension called manga extension. It all went well until I crossed with input. I like to put an input number every time I enter a manga name in the main input, naming it with chapter with input. But when I enter a new manga name, the value of every input I entered is lost. And I don't know how to put it inside of localStorage. How should I make it?
const divInput = []
const mangaName = document.getElementById('mangaNameInList')
// the manga name
const deleteBtn = document.getElementById('deleteBtn')
let mangaChapters = document.createElement('input')
let mangaLists = document.getElementById('mangaLists')
// the div i created in html
let count = 0
mangaName.addEventListener('keyup', function (event) {
if (event.key == 'Enter') {
count += 1
mangaLists.innerHTML += `<p> ${mangaName.value}
<em>chapter</em>
<input type="number" class="mangaChapters ${count}"
onkeyup="getValue(event)">
</p>`
// the input that i was conflicted with
}
})
function getValue(event) {
if (event.key == 'Enter') {
mangaChapters = document.getElementsByClassName(`mangaChapters`)
divInput.push(mangaChapters.value)
}
}
every time I entered the main input (mangaName) and displaying it in the innerHTML, I just concatenate it with and and that's the problem, how can I get the value of every declared input that I make in inside the mangaName?
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-
scale=1.0">
<link rel="stylesheet" href="style.css">
<title>Manga Extension</title>
</head>
<body>
<h1>Manga Name Lists</h1>
<input type="text" id="mangaNameInList">
<button id="deleteBtn">DELETE ALL</button>
<div id="mangaLists"></div>
<script src="script.js"></script>
</body>
</html>
here's the html code. thanks for taking time to answer my coding question :)))
I have a name input on 1.html.
I need to call a function where the input will be stored after completion, and when the person clicks ~next~ to go to the next page (2.html), whatever was stored appears there.
Example:
~1.html~
What's your name?
~input~ John ~input~
~2.html~
Hi, John! How can i help you?
I know i can use Session Storage to do it, but i'm not sure on how to proceed.
Here's what i have:
1.html
<p>"Whats Your Name?"</p>
<input id="your-name-input" type="text">
<a href="2.html">
<button id="next-button">Next</button>
<script>
nextButton = document.getElementById("next-button);
nextButton.addEventListener("click", () => {
var name = document.getElementbyId("your-name-input").value;
if(name !== "") {
sessionStorage.setItem("name", name);
} else {
alert("Please fill yout name")
});
</script>
And then, on 2.html i have:
<p id="user-name"></p>
What i'm trying to do, is to put inside the <p>, the following greeting:
Hi (name.value), how can i help you?
How can i call a function that loads the name value on the 2.html page when the page loads?
The below code should work. There are a few things missing in your code, not sure if you copied everything in.
In either case, the below works for me. You just need to update the link in the window.location = syntax. When you do that, it will take your stored value to the new page in the same tab, and display it using the script code in 2.html.
Code in 1.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1" />
<title>Your name test</title>
</head>
<body>
<p>Whats Your Name?</p>
<input id="your-name-input" type="text">
<button id="next-button">Next</button>
<script>
const nextButton = document.getElementById("next-button");
const input = document.getElementById("your-name-input");
nextButton.addEventListener("click", () => {
const name = input.value;
if(name !== "") {
sessionStorage.setItem("name", name);
window.location = "<link to your 2.html file>";
} else {
alert("Please fill your name")
}
});
</script>
</body>
<footer>
</footer>
</html>
Code in 2.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1" />
<title>See, it works</title>
</head>
<body>
<p id="user-name"></p>
<script>
const displayText = document.getElementById("user-name");
const storedValue = sessionStorage.getItem("name");
console.log(storedValue);
window.addEventListener("load", () => {
displayText.innerHTML = "Hi " + storedValue;
})
</script>
</body>
<footer>
</footer>
</html>
Original ans to original question:
You could use an addEventListener with an IF statement for your 'next' button and then the code you already have for localStorage.
Depending on what you need from your page, you could also use sessionStorage - that one doesn't save the input forever so might save, albeit limited, space on your user's computer.
I don't see the HTML for your button yet. But assuming you have it, here's an option for the rest of your code in 1.html.
Inside 1.html script tag:
nextButton = document.getElementById("yourButtonID");
nextButton.addEventListener("click", () => {
var name = document.getElementById("your-name-input").value;
if(name !== "") { // if input is not empty
localStorage.setItem("name", name); // set the value in localStorage
} else {
alert("Please fill your name")} // else, display an alert (if you like)
});
So if you notice I have created a link in the preview below. What I'm looking for is if someone clicks on the link. I want to replace the text for a 60 seconds timer, and once the 60 seconds are finished, the text and link should reappear, and the same process continues.
Can someone help?
Request code again
You can use javascript setInterval and then clearInterval for this.
Your code while using jQuery should look like this: (change the value of timer_output_initial to time in number of seconds you want)
var display_timer_interval;
var timer_output_initial = 5
var timer_output = timer_output_initial;
var initial_text = "";
$("#timer_link").on("click",function(){
var clicked_element = $(this);
initial_text = clicked_element.html();
display_timer_interval = setInterval(function(){
display_time(clicked_element);
}, 1000);
});
function display_time(element){
timer_output = timer_output-1;
if(timer_output === 0) {
clearInterval(display_timer_interval);
timer_output = timer_output_initial;
element.html(initial_text);
}else{
$(element).html(timer_output);
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
</head>
<body>
Request code again
</body>
</html>
I am a newbie to JavaScript < 1 Week old
I wrote a very short HTML/JavaScript and got it to display on console.
Basically, I want to display the result of a function used as a variable inside the <p> tag of the HTML.
I got the script to display in the console.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<script>
var kilo = function(pound) {
return pound/2.2;
}
kilo (220);
console.log (kilo(220));
</script>
<script>
var kilog = function(pounds) {
return pounds/2.2;
}
console.log (kilog(440));
</script>
<p id="Kilograms"><!--I want the result here--></p>
</body>
</html>
How do I get the result of the function as a variable i.e var kilo (pounds)... to display in the p tag with id Kilograms?
Script shold be after BODY code, or you should add document ready event listener. So, try this solution:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<p id="Kilograms"><!--I want the result here--></p>
</body>
<script>
var kilo = function(pound) {
return pound/2.2;
}
kilo (220);
console.log (kilo(220));
var kilog = function(pounds) {
return pounds/2.2;
}
console.log (kilog(440));
document.getElementById("Kilograms").innerHTML = kilog(440);
</script>
</html>
Example in JSBin: https://jsbin.com/pacovasuve/edit?html,output
You can try this in your js code.
document.getElementById("Kilograms").innerHTML="write whatever you want here";
Try this
var p = document.getElementById('Kilograms');
p.innerHtml = 'any text';
// OR
p.innerHtml = kilog(440);
I need your help in getting the appropriate code for showing the count down for the session time out in the progress bar or any part of the screen.
However, these actions should be included:
First Alert: "You have 5 minutes before your session expires"
Click here to continue your session.
or
Click here to logout
if no action in 5 mins then change the page to display "Your session has expired" and will be redirected to logout.jsp.
I tried to find good examples, but I did not find anyone.
Can anyone help on that issue.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script type="text/javascript">
var timeoutHandle = null;
function startTimer(timeoutCount) {
if (timeoutCount == 0) {
window.location.href = 'logout.jsp';
} else if (timeoutCount < 3) {
document.getElementById('sessionTimer').innerHTML = 'You have ' + (timeoutCount * 3000)/1000 + 'seconds until timeout' ;
}
timeoutHandle = setTimeout(function () { startTimer(timeoutCount-1);}, '3000');
}
function refreshTimer() {
killTimer(timeoutHandle);
startTimer(3);
}
</script>
</head>
<body onload="startTimer(3)">
<div id="sessionTimer"></div>
</body>
</html>