Good Day,
I am working through freecodecamp and am currently grappling with the quote generator problem. I have run into a bit of an issue with getting functionality for me scripting a change when clicking the button. Basically I have my own code which I'll post below, but also trying to simply copy and paste the code from them I am still unable to get functionality in my button.
I am sure it's an honest and easy mistake but hopefully that should make it all the easier to resolve :) Let me know if you have any questions and I genuinely appreciate it!
(please note I simply want to change the display message upon clicking the button)
<script>
$(document).ready(function(){
$("#getMessage").on("click", function(){
$(".message").html("New Message");
});
});
</script>
<div id="wrapper">
<button type="button" id = "getMessage" class = "btn btn- primary">Generate New Quote</button>
</div>
<div class= "text-center">
<div class = "message">
Sample
</div>
</div>
As the others have mentioned, you are most likely not adding jQuery, yet you are attempting to use it ($). To confirm this, check your console. It's probably filled with Uncaught ReferenceError: $ is not defined.
Assuming you're using CodePen as the challenege says in the objective, you can very quickly and easily include jQuery. To do so, just click the settings cog next to JS, use the Quick-add drop down, and select jQuery.
If you wish to include it manually (as you will most likely have to in future development) I recommend Drefetr's answer.
There do not appear to be any major issues with the code (with respect to the logic, the editor may have rendered your formatting a little nastily).
Can you confirm that you have included the jQuery libraries within the header of your HTML document? e.g.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
For more information: https://developers.google.com/speed/libraries/#jquery
Related
Sorry if this is a dumb question, its my first time doing web dev. Also, first time asking a question here. I am trying to get my read more / read less button to work. It worked once and upon refreshing the page it stopped working. I am running a script in a separate js file to toggle my button. And i run the script using the script tag directly in the page. Any help will be greatly appreciated. Also, this is a react App. Upon clicking the button the user should be able to see the text within the span tag.
Code in main.js
document.addEventListener('DOMContentLoaded', () => {
const readMoreBtn = document.querySelector('.read-more-btn');
const text = document.querySelector('.text');
readMoreBtn?.addEventListener('click', (e)=>{
text.classList.toggle('show-more');
....
})
})
code in onlineClasses.js
<div className='class-container'>
<div className='class-list'>
<h1>VIRTUAL CLASSES</h1>
<div className="grid-class-container">
<div className="grid-item" >
<h4>SUNNAH PRAYERS - <i>CLASS TITLE</i></h4>
<p className="text" id="txt"> Class info.
<span className="more-text">More info about classes.</span></p>
<button className="read-more-btn" id="btn">READ MORE</button>
<Helmet><script src = './main.js'type="text/jsx"></script </Helmet></div>
I tried putting the script in different parts of my project. I tried using quearySelector() and getElementById(), i know react uses states and effect, im not sure if i would have to use that. I had some errors in my console, but i resolved those.
Im trying to install tinymce to use with my text editor to allow the user to have a text box just like the stack overflow one. I cant get it to display though
ive put this in the head of my index file
<script src='https://cloud.tinymce.com/stable/tinymce.min.js'></script>
<script src='https:https://cloud.tinymce.com/stable/tinymce.min.js'>
</script>
<script src="//tinymce.cachefly.net/4.1/tinymce.min.js"></script>
<script>
tinymce.init({selector:'infotextarea'});
</script>
then in my info page ive put
<textarea id="infotextarea">Your content here.
</textarea>
can anyone explain why its not displaying
It may be that at the time you run the tinymce.init function, it is not yet rendered and there is no textarea in the DOM.
Try debugging your code on the following line:
<script>
debugger;
tinymce.init({selector:'infotextarea'});
</script>
When the web's execution has stopped on that line, in the development console of your browser type the following:
$('#infotextarea').length
If the size is greater than 0, textarea exists at that moment and it is another problem, but if it shows 0 is that you have not yet created that view, this will help us get more information about your problem.
If you want to target a <textarea> by ID you need to use a valid CSS selector.
selector: "#infotextarea"
(note the # at the beginning of the string)
I would also note you appear to be loading TinyMCE 3 separate times - I have no idea why you would need to do that - loading it once should be sufficient
Its not a perfect answer to my question, but i used ckeditor and it worked perfectly.
I must have a mistake somewhere that i or my team could not find with tinymce
I have an html button that I want to close the current window when clicked. I thought I could just set the onclick feature like I did below. Am I missing something?
<button type="button" onclick="javascript:window.close()">Discard</button>
When in the onclick attribute you do not need to specify that it is Javascript.
<button type="button"
onclick="window.open('', '_self', ''); window.close();">Discard</button>
This should do it. In order to close it your page needs to be opened by the script, hence the window.open. Here is an article explaining this in detail:
Click Here
If all else fails, you should also add a message asking the user to manually close the window, as there is no cross-browser solution for this, especially with older browsers such as IE 8.
JavaScript can only close a window that was opened using JavaScript. Example below:
<script>
function myFunction() {
var str = "Sample";
var result = str.link("https://sample.com");
document.getElementById("demo").innerHTML = result;
}
</script>
Use the code below. It works every time.
<button onclick="self.close()">Close</button>
It works every time in Chrome and also works on Firefox.
This site: http://www.computerhope.com/issues/ch000178.htm
answers it with the script below
< input type="button" value="Close this window" onclick="self.close()">
Closing a window that was opened by the user through JavaScript is considered to be a security risk, thus not all browsers will allow this (which is why all solutions are hacks/workarounds). Browsers that are steadily maintained remove these types of hacks, and solutions that work one day may be broken the next.
This was addressed here by rvighne in a similar question on the subject.
I know this thread has been answered, but another solution that may be useful for some, particularly to those with multiple pages where they want to have this button, is to give the input an id and place the code in a JavaScript file. You can then place the code for the button on multiple pages, taking up less space in your code.
For the button:
<input type="button" id="cancel_edit" value="Cancel"></input>
in the JavaScript file:
$("#cancel_edit").click(function(){
window.open('','_parent','');
window.close();
});
November 2019:
onclick="self.close()" still works in Chrome while Edge gives a warning that must be confirmed before it will close.
On the other hand the solution onclick="window.open('', '_self', ''); window.close();" works in both.
I am new to perl/html. This is from a perl file. This button is in there right now:
<button id = "button1" name = "submitButton" type="submit">
<span class="right">Submit</span>
</button>
I don't see any piece of code where submitButton or button1 is given any logic so I don't understand why this jumps to the next page. Can someone explain?
EDIT: This seems to be the only javascript in the whole file...
<script type="text/javascript">
% $m->comp('../js/share.js');
</script>
I looked at the file, and it doesn't seem to do any redirecting or anything.
Often event handlers are hooked up at run-time using JavaScript. If there is an included script, look in the code for "button1" and see which function is hooking it up.
Also since this is a SUBMIT button, if it is wrapped in a form, no code needs to hook this up. It will post to whatever is defined in the form's ACTION property.
Maybe there is some JS/Jquery or another js-framework included to the page?
Since this is a submit button, it does the logic defined by the Form that surrounds it.
Is there any way to write script in css and call or execute it whenever required ?
I need a <script> tag to be executed .
i need something like this..
css code
#execute{
<script> ..some script.. </script>
}
so whenever i use
<html>
.
.
.
.<div id="execute" />
.
.
.
.
</html>
so if i change the script changes will be reflected everywhere.
Is it possible?
EDIT:
Is it possible to keep my <script></script> tags inside some js file and i will host it. and then i will call some function() from my HTML so that the script will be executed everywhere i need it.
Can someone show me any example, tutorial how i can do it.
I don't have much information about the Js file and how the function should be called.
Thank you all
Does it have to be in CSS? jQuery is a great, simple way to do what you're asking. You put all your style information in the CSS (what it's intended for) and keep your javascript in the html or a .js file. Take a look at http://jquery.com. The code would look something like this
$(function() {
$('#execute')
.someCoolFunction()
.anotherCoolFunction();
});
You use $(function() { /* code */ }); to run the code when your document is ready, and you use $('#execute') to grab the element with the execute tag. You can then do a lot of cool javascript really easily with that jQuery element.
No, you cannot mix CSS and Javascript this way. Why would you want to?
If you simply want a common JavaScript include, do it like this:
<script type="text/javascript" src="yourscript.js"></script>
You can't do this in standard CSS.
There is a way in which you can run code from within the CSS context, using a technology called 'Behaviours', referencing an HTC file (which is basically Javascript) in the stylesheet.
However, this technology is non-standard, and only exists in IE. It is therefore only really used to write hacks to make IE support features that it doesn't have which are in other browsers. An example of this in use is CSS3Pie.
If you're working on a site which will never be used in any browser other than IE, and you're happy to use a non-standard technology, then you may consider this to be the exact answer to your question. However I would strongly recommend you don't do this.
More realistically, you should be using a Javascript library such as JQuery, as the functionality you describe is pretty much standard fare for JQuery.
With JQuery, you would write code like this (in a normal script block, not in the CSS!):
$('.execute').each(function() {
/* your code here; it would be run for each element on the page with the class of 'execute' */
}
As you can see, it uses a CSS-style selector syntax to select the elements to work with.
(also NB: I've used execute as a classname here, not as an ID, because you imply that you want more than one of them -- note that you should never use the same ID more than once in any HTML page; it is invalid. If you need the same thing several times, use a class.
JQuery has functionality to watch for changes to elements, respond to events such as clicks or mouse over, and much more. Other similar libraries such as Prototype, MooTools and Dojo would also be able to do a similar job.
Hope that helps.
[EDIT]
Given the edit to your question, can you not just place the advertisment <script> tag inside the <div> on the page where you want it?
So with JQuery, you could write something like this to run your ad in each place you want it:
HTML:
....
<div class='execute'></div>
....
<div class='execute'></div>
....
Javascript code (remember to also include the JQuery library, or this won't work):
$(document).ready(function () {
$('.execute').each(function() {
advertisement(this); //change to whatever the advertisement script function is called.
});
});
Hopefully that will get you started. I can't really help you much more without knowing more about the advertisement script, though.
Also, the people who supplied the advert script should be able to tell you how to use it.
I believe a Javascript library like JQuery or Dojo is what you are looking for. It will allow you to add event handlers on tags with certain CSS attributes, which will behave exactly like what you are trying to do right now.
EDIT
Here is an example with Dojo pulled from the Google CDN that will popup an alert window when you click on any <div class="execute"></div> block:
<html>
<head>
<style>
<!--
.execute { background-color: red; height: 25px; }
-->
</style>
<script src="http://ajax.googleapis.com/ajax/libs/dojo/1.6.0/dojo/dojo.xd.js" ></script> <!-- load Dojo from Google CDN
<!-- Let's register a onClick handle for any .execute div. -->
<script>
dojo.ready(function() // Dojo will run this after being initialized
{
// Get A list of all tags with id execute and add a event onClick
dojo.query(".execute").connect("onclick", function(evt)
{
alert("Event triggered!");
// ...
});
});
</script>
</head>
<body>
<div class="execute">Click me 1</div>
<br /><br />
<div class="execute">Click me 2</div>
</body>
</html>
Edit 2
This example uses an onClick event but Dojo (JQuery) allows you to do much more things. For instance if you wanted to dynamically add an image or something onLoad inside .execute divs, you could do it with Dojo (JQuery) in a similar way to this.
Doing it with a library saves you a lot of effort, but if you still want to write and call your own functions from javascript files, this is a rough idea of how you would do it:
// myScript.js
function foo()
{
// ...
}
// page.htm
<html>
<head>
<script src="path/to/myScript.js"></script>
</head>
<!-- ... -->
<div class="execute">
<script>
<!--
// Call foo()
foo();
-->
</script>
</div>
<!-- ... -->
It doesn't really make sense to abstract a script into CSS like that, and even if it was a good idea, it can't be done.
Why do you need to run the same script over and over in different places? Consider whether or not there might be a better or simpler way to do whatever it is you're doing.
Plus, when you include a script with the src attribute in the script tag, if you modify the script's source file, the changes persist everywhere.
No, but you can use script to alter the CSS properties of any element in the DOM.