I'm really confused on how to go about this.
What I'm trying to do is, have a form in HTML (not <form>), just a bunch of <input> tags with a <button>.
Basically, in the javascript code, there's an event listener that activates the MakeCard() method, when the <button> is pressed.
The MakeCard() method is supposed to then replace the form (in the HTML body) with a <div> that has it's own random stuff.
How do I make this system work? Please no JQuery and other such libraries. I'm only allowed to use DOM.
This is the code I have so far:
<html>
<head>
<title>Home</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link type="text/css" rel="stylesheet" href="css/style.css"/>
<script>
window.addEventListener("load", function(){
var nameOfRecipient = document.getElementById("nameOfRecipient");
var colorInfo = document.getElementById("colorInformation");
var fontSize = document.getElementById("fontSize");
var resultNameOfRecipient = document.getElementById("resultNameOfRecipient");
var resultColorInfo = document.getElementById("resultColorInformation");
var resultFontSize = document.getElementById("resultFontSize");
function MakeCard(){
// Make the card
// Show the results
ShowResults();
}
function ShowResults(){
// Show the user choices
resultNameOfRecipient.innerHTML = nameOfRecipient.value;
resultColorInfo.innerHTML = colorInfo.value;
resultFontSize.innerHTML = fontSize.value;
}
document.getElementById("submitButton").addEventListener("click", MakeCard);
});
</script>
</head>
<body>
<div id="headerContainer">
Welcome to the Card Maker!
</div>
<div id="formContainer">
<p>Name of recipient<input type="text" id="nameOfRecipient"></p>
<p>Color Information<input type="text" id="colorInformation"></p>
<p>Font Size<input type="number" id="fontSize"></p>
<input type="button" id="submitButton" value="Make Card!">
</div>
<div id="resultContainer">
<p id="resultNameOfRecipient"></p>
<p id="resultColorInformation"></p>
<p id="resultFontSize"></p>
</div>
</body>
PLEASE IGNORE THE LAST DIV WITH ID="resultContainer" and ignore all the variables that have the result in front. That stuff is other extra stuff.
It would be amazing if I could just know how to make an entirely new div that REPLACES the div with ID="formContainer".
First things first: Why use listeners when you can use onclick tags? Set the button like this, and change the listener to a dedicated function:
window.addEventListener("load", function(){
becomes
function myfunction() {
and don't forget to change the end of the script from }); to }..
Also, remove the listener from the button, which is this line.
document.getElementById("submitButton").addEventListener("click", MakeCard);
And add an onclick event to the button, and change it to a button type, to make sure it doesn't submit:
<button type="button" id="submitButton" onclick="myfunction()">Make Card!</button>
Secondly: You've set variables to actual HTML elements, which would show something like: HTML[buttonElement]... I'm assuming what you want is what was typed in the element, which is the "value" tag. You would get that by changing the variables to this:
var nameOfRecipient = document.getElementById("nameOfRecipient").value;
var colorInfo = document.getElementById("colorInformation").value;
var fontSize = document.getElementById("fontSize").value;
var resultNameOfRecipient = document.getElementById("resultNameOfRecipient").value;
var resultColorInfo = document.getElementById("resultColorInformation").value;
var resultFontSize = document.getElementById("resultFontSize").value;
So now that we've tidy'd up your syntax and stuff, I wanna get on to the part where you said you wanted to replace the DIV. Here's my way of doing it:
I would give every element in the DIV an ID (other than the button, we've already discussed that).
<p id="nameofrecipentp">Name of recipient<input type="text" id="nameOfRecipient"></p>
<p id="colorinformationp">Color Information<input type="text" id="colorInformation"></p>
<p id="fontsizep">Font Size<input type="number" id="fontSize"></p>
You could then call a function when the function myfunction() is called.
function myfunction() {
replacediv()
And define replacediv() to replace all the elements in the form to whatever you'd like.
function replacediv() {
document.getElementById("nameofrecipentp").innerHTML =
"Enter your data here"
document.getElementById("colorinformationp").innerHTML =
"Enter your data here, for the color information"
document.getElementById("fontsizep").innerHTML =
"enter your data here for font size"
}
I think I pretty much covered everything. If you still need help, tell me.
Related
I got a problem with one of the sites with JavaScript, and I need to automate a click and then find out how many turns I got before I run out of them. As in, for example, let's say I have 8 turns. So what I would need is to automatically have JavaScript to trigger said div id, 8 times. (As in, I add like this)
Link:https://jsfiddle.net/yxsgp8tc/
<body>
<button id="test">Test</button>
<p>
On box should be number of tests
</p>
<form>
<label><input type="text"/>00-99</label>
<button>
trigger it
</button>
</form>
</body>
in plain javascript, you would target unique elements (using an id) by using document.getElementById('<element_id'). If you wanted to target a class, you would document.querySelector('.<class_name>') for the first instance of the class, or document.querySeletorAll('.<class_name>')
Also, your input tag was misspelled "imput", and is a singleton tag so you don't have to close it off.
Assuming you wanted a way to trigger a click event, here's a basic example:
<head>
<script>
const test = document.getElementById('test');
const trigger = document.getElementById('trigger')''
test.addEventListener('click', () => {
const num_test = document.getElementById('num_tests').value;
for (let i = 0; i < num_test; i++) {
trigger.click();
}
});
trigger.addEventListener('click', () => {
console.log('trigger clicked');
});
</script>
</head>
<body>
<button id="test">Test</button>
<p>
On box should be number of tests
</p>
<form>
<input type="text" id="num_tests" value="">
<button id="trigger">
trigger it
</button>
</form>
</body>
https://jsfiddle.net/qr1z3d6e/2/
first in the jsfiddle.net link there are some errors such as imput instead of input.
I haven't tested it, but if I understand correctly is it something like this? try it.
<body>
<input id="myinput" type="text">00-99</input>
<button id="clickme">
</body>
<script>
var button = document.getElementById("clickme"),
count = 99;
var myInput = document.getElementById("myinput")
button.onclick = function(count){
count -= 1;
myInput.innerHTML = "00 " + count;
};
</script>
I'm fairly new to javascript, and getting quite frustrated by the following code
<!DOCTYPE html>
<html>
<script>
var time = '0'
var area = 'neast'
function update_area(input) {
area = input;
load_updated_image(area,time);
};
function update_time(input) {
time = input;
load_updated_image(area,time);
};
function load_updated_image(area,time) {
var url = 'http://personal.psu.edu/kps5442/modelimages/hrrr_'+area+'_wetbulb'+time+'.png';
document.getElementById("theImage").src = url;
document.getElementById("url").innerHTML = url;
};
</script>
<body onload="load_updated_image(area,time)">
<p>URL Output:</p>
<p id="url"></p>
<font size = 4><b>Forecast Hour: </b>
<font size = 3>
<a href="#" onmouseover="update_time(0);" /> 00</a>
<a href="#" onmouseover="update_time(1);" /> 01</a>
<a href="#" onmouseover="update_time(2);" /> 02</a>
<img id="theImage" src=undefined width="850" height="600" />
<br> <font size = 4><b>Region Selection: </b>
<a href="#" onclick="update_area(neast);" /> Northeast</a>
<a href="#" onclick="update_area(seast);" /> Southeast</a>
</body>
</html>
I have 18 different "hours" of images for different regions across the US. The goal is to change the hour of the image when the hour links are moused over, and update the region when the region links are clicked.
The function update_time() works as expected, changing the image as I mouse over the links. However, the function update_area() fails with the following error:
"Uncaught ReferenceError: neast is not defined"
I'm not sure why this is happening, because the update_time and update_area functions are built in exactly the same way, and I globally defined the time and area variables at the start of the script.
Any help would be appreciated!
You have to put the arguments in quotes .
onclick="update_area('neast');"
onclick="update_area('seast');"
<!DOCTYPE html>
<html>
<script>
var time = '0'
var area = 'neast'
function update_area(input) {
area = input;
load_updated_image(area,time);
};
function update_time(input) {
time = input;
load_updated_image(area,time);
};
function load_updated_image(area,time) {
var url = 'http://personal.psu.edu/kps5442/modelimages/hrrr_'+area+'_wetbulb'+time+'.png';
document.getElementById("theImage").src = url;
document.getElementById("url").innerHTML = url;
};
</script>
<body onload="load_updated_image(area,time)">
<p>URL Output:</p>
<p id="url"></p>
<font size = 4><b>Forecast Hour: </b>
<font size = 3>
<a href="#" onmouseover="update_time(0);" /> 00</a>
<a href="#" onmouseover="update_time(1);" /> 01</a>
<a href="#" onmouseover="update_time(2);" /> 02</a>
<img id="theImage" src=undefined width="850" height="600" />
<br> <font size = 4><b>Region Selection: </b>
<a href="#" onclick="update_area('neast');" /> Northeast</a>
<a href="#" onclick="update_area('seast');" /> Southeast</a>
</body>
</html>
In JavaScript variables are not restricted to a single 'type', but a String will always be contained in quotes and a number will not. Also a variable cannot be, or start with, a number. This is why when you use a string as an argument it must be contained within quotes, otherwise it thinks you are sending a variable.
You're starting your document with <!doctype html> so you're saying you're writing HTML5, but there is a whole bunch of things that are incredibly wrong here due to use HTML3.2 and obsolete ways to invoke javascript.
Under modern HTML5 rules, there are no self-closing elements. It's not a hard error, but don't add that /> at the end of an <img.... Also <font> hasn't existed as element for 20 years now. It was removed in HTML4.1 in 1998. Then some semantics: if you need button functionality (i.e. clickable, but NOT navigating to some (part of a) page), use <button>. That's what it's for. Do not use <a>, and definitely not with href="#", because that's an active instruction for the browser to scroll to the top of the page. Finally, on...=... handlers are an ancient attribute that is unfortunately still supported, but you should never use. Use addEventListener in your Javascript, after you've declared all your HTML.
So let's just fix everything at the same time:
<!-- this line literally tells the browser "I am using HTML5" -->
<!DOCTYPE html>
<html>
<!-- always have a header section -->
<head>
<!-- no / at the end of meta elements -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Always just fill this in, it's good practice</title>
<style>
/* you want this in its own file, see the note at the end of this post */
h1 {
font-size: 100%;
font-weight: bold;
}
</style>
</head>
<body>
<!-- sectioning isn't mandatory, but extremely good practice -->
<section id="output">
<h1>URL Output:</h1>
<p>Forecast Hour:</p>
<div class="controls">
<!-- let's use data attributes, and be explicit about the values here -->
<button class="forecast update" data-value="0">0h</button>
<button class="forecast update" data-value="1">1h</button>
<button class="forecast update" data-value="2">2h</button>
</p>
<!-- if you've never see the figure/figcaption elements: they exist -->
<figure id="forecast-image">
<!-- no / at the end of this element -->
<img src="placeholder.jpg" width="850" height="600" alt="forecast map">
<figcaption></figcaption>
</figure>
</section>
<section>
<h1>Region Selection</h1>
<div class="controls">
<button class="area update" data-value="neast">Northeast</buton>
<button class="area update" data-value="seast">Southeast<button>
</div>
</section>
<!-- don't put your script in the page. put it in its own file -->
<script src="updates.js"></script>
</body>
</html>
And then we make a second file for the javascript called updates.js:
// this goes last, so that the DOM is done by the time you invoke your script.
var currentTime = 0;
var currentArea = `NorthEast`;
// this function doesn't need parameters: we already know what they are
function load_updated_image() {
var url = `http://personal.psu.edu/kps5442/modelimages/hrrr_${currentArea}_wetbulb${currentTime}.png`;
let figure = document.getElementById(`forecast-image`);
// update the image
let img = figure.querySelector(`img`);
img.src = url;
// update the image caption with a link
let caption = figure.querySelector(`figcaption`);
caption.innerHTML = ``;
let link = document.createElement(`a`);
link.href = url;
caption.appendChild(link);
}
// update the area, and called image update
function update_area(area) {
currentArea = area;
load_updated_image();
};
// update the time, and called image update
function update_time(time) {
currentTime = timel
load_updated_image();
};
// add the initial page load handling
document.addEventListener(`ready`, evt => load_updated_image());
// add the click handling for forecast time buttons
let forecastButtons = document.querySelectorAll(`button.forecastupdate`);
forecastButtons.forEach(button => {
// get the button's data-value
value = button.dataset.value;
// and then set up a click listener to update the forecast time
button.addEventListener(`click`, evt => update_time(value));
});
// add the click handling for forecast area buttons
let areaButtons = document.querySelectorAll(`button.area.update`);
forecastButtons.forEach(button => {
// get the button's data-value
value = button.dataset.value;
// and then set up a click listener to update the forecast area
button.addEventListener(`click`, evt => update_area(value));
});
And then to be even more proper, don't use <style>...</style> but make a new file called "forecast.css" and then link to that in your page using <link href="forecast.css" rel="stylresheet"> (note: this is still HTML5, you don't put /> at the end. Link elements simply don't have a closing tag)
In a webpage I am writing I want to be able to clear two text boxes when I click on either one of them. So far I have been able to clear one when I click the other, but it won't clear itself.
Here is my html/javascript so far:
<!DOCTYPE html>
<html>
<head>
<script>
function clear()
{
var c = document.getElementById('c');
c.value = '';
var f =document.getElementById('f');
f.value= '';
}
</script>
</head>
<body>
<input placeholder = "Celsius" id="c" onclick='clear()'></br>
<input placeholder = "Fahrenheit" id="f" onclick='clear()'></br>
</body>
<p>
</p>
</html>
Rename your function clear to something else, otherwise you are calling the document.clear function
This answer by F. Kling might be useful to you
I need help with my code, because everything works except for one thing. After I input text in the three textboxes and click the button, I get a div with the text, but when I click on the text I want only the nummer part to get style="bold", not the whole div.
What's the easiest way to accomplish this, if possible, without putting the nummer text in its own element?
<html>
<head>
<title>Uppgift 6</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
var $contact = {};
$contact.List= function() {
this.addContact= function(namn ,efternamn, telefon) {
var cont= new $contact.People(namn, efternamn, telefon)
document.body.appendChild(cont.element);
};
};
$contact.People= function(namn, efternamn, telefon) {
this.fNamn= namn;
this.eNamn= efternamn;
this.tele= telefon;
this.element= document.createElement("div");
this.element.innerHTML= namn+" "+efternamn+" "+telefon;
var ele= this.element;
this.element.addEventListener("click", function () {
ele.style.fontWeight="bold";
});
};
var myList;
function startUp() {
myList= new $contact.List();
}
</script>
</head>
<body onload="startUp();">
<form>
<input type="text" id="fNamn" placeholder="Föramn"/>
<input type="text" id="eNamn" placeholder="Efternamn"/>
<input type="text" id="tele" placeholder="Nummer"/>
<p></p>
<input type="button"
onClick="myList.addContact(document.getElementById('fNamn').value,
document.getElementById('eNamn').value,
document.getElementById('tele').value);"
value="Skriv ut"/>
</form>
</body>
</html>
There is no way to do this - you either work with the div element or you add a new element that has it's own properties you can work with. There is no way to change the properties of only a part of the text in an element.
Upload and use a custom font where only the numerals are bold.
Is it possible to add a textbox into an iframe, and append it into the src of the iframe. So i have created an modal box displaying a button for the user to click "ADD BUTTON"
<div id="addFeature" class="openAdd">
<div>
X
<h2>Add...</h2>
<button class="text" type="button">Text</button>
</div>
</div>
As the user clicks on the button, I need the modal box to close and a text box added. The following iframe is within main.html. As you can see the iframe displays the other html page.
<div>
<iframe class="newIframe" id="newIframe" src="webpage.html" onload="iFrameOn();">
Your browser does not support Iframes
</iframe>
</div>
Though I need the textbox to be added in webpage.html which is
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" src="index.js"></script>
</head>
<body onload="iFrameOn();">
<div id="design">
</div>
</body>
</html>
JS:
addTextBox() {
var text = "'<div><input type='textbox'/></div>'"
var textbox = document.createElement('div');
textbox.innerHTML = text;
var addText = document.getElementById('div').src = "webpage.html";
addText.appendChild(textbox);
}
Is it possible to do what I'm asking?
I'm afraid explaining this in the way you're trying to do this now, would be an endless swamp. Here's some guidelines, how you can achieve this quite easy.
Probably you need to remove the onload from iframe tag first. Then put these lines to your main page:
var textForIframe; // Take care that this variable is declared in the global scope
function addText () {
document.getElementById('newIframe').src = 'webpage.html';
textForIframe = '<div><input type="text" /></div>'; // or whatever text you need
return;
}
When ever your dialog is ready, call addText().
Then in webpage.html, remove the onload from body tag, and add the function below to somewhere after <script src="index.js"></script> tag.
window.onload = function () {
var addTextElement = document.getElementById('design'), // or whatever element you want to use in iframe
textToAdd = parent.textForIframe;
// depending on what iFrameOn() does, place it here...
addTextElement.innerHTML = textToAdd;
iFrameOn(); // ... or it can be placed here as well
return;
};
These snippets add a new input type="text" to #design within iframe.