I am trying to get the referrer and update the referrer so that my users can go back to the page they came back from. I have a hidden input field which holds the value of the redirect. I have a static value in there just in case the referrer is empty. If the referrer is not empty, I want to update the value of it. Here is the code I have written, I even tested it and it said it was updated, however, I am not being redirected properly, so it is not working.
JavaScript and HTML I have written (keep in mind, I have correctly linked the file and such):
$(document).ready(function(){
if (document.referrer != "") {
document.getElementsByName("redirect").value = document.referrer;
var test = "false";
if (document.getElementsByName("redirect").value == document.referrer){
test = "true";
}
alert(test);
}
});
<script src="js/referrer.js"></script>
<input type="hidden" name="redirect" value="https://www.google.com" />
I feel like this is a minor error or there might be some sort of standard I am not following.
Thanks for the help! I appreciate any insight!
I can't see what the problem is off hand by what you've given me. But what I can say is that if you are going to use JQuery in one place (document ready function) then you should also use it to grab the value of your input field.
It would also help if you put an Id on the input field instead of doing it by name. Ids are the best way to get a specific element. That could be your problem too.
Then call it using:
$("#ID").val()
so your code would become:
if($("#ID").val() === document.referrer)
I would also suggest using triple equals as well. But that is completely up to you.
I've never done anything with document.referrer, but there might be a better way of doing that as well.
One odd thing is that you are setting these 2 things equal to each other
document.getElementsByName("redirect").value = document.referrer;
and then immediately testing if they're equal to each other.
if (document.getElementsByName("redirect").value == document.referrer)
I can't say that this is your issue, but it's bad coding and should be fixed.
I think a single letter is tripping you up here.
if (document.getElement**s**ByName("redirect").value == document.referrer){
There's no singular equivalent for 'byName', so you do end up with an array (or at least, an array-like object). Unlike IDs, it is allowable for multiple inputs to have the same name. The easiest solution is this:
if (document.getElementsByName("redirect")[0].value == document.referrer){
Doing document.getElementsByName will return an object array that DOES NOT include the value. There is no way to change the value (That I know of and have tried) when using the getElementsByName. I have solved this issue by using getElementById, it actually works properly for me.
Related
In our (hybris) shop some products have a yform to summarize the parts of the product. Is there an easy way to copy the value of the sum field into an other field (automaticly) like the productquantity (no yForm)?
I guess I need javascript, but the id of the sumfield is generatad, so I don't know how to get the sum. Also my Javascript abilities are quite limited...
UPDATE:
To get the value I use this part of code:
copyYFormValueToProductQuantity : function() {
var copyText = document.querySelector('input[id*="sum"]').value
if (copyText > 0 && copyText != null)
{
//do stuff
}
console.log("Copied value: " + copyText)
},
But this line
document.querySelector('input[id*="sum"]').value
returns null. If I use it in the browserconsole, it also returns null. But after I inspected the element it works and returns the value I want to. So I guess I am missing some JS-basics here and the object isn't ready before?
Btw.: I call this function with a keydown-eventlistener.
This can most likely be done from the jsp files. There you have all the data that is needed, so you most likely need to only copy that field where you need it.
We can also help you more if you add some code examples here (what exactly is that yform?). If you struggle to find where in code is that specific yform created/added, it's always worth giving a try to search for the applied classes of the html (search the entire project and see what you find).
As I understand your question, you are saying that you want to copy the value of a yForm field named sum into a non-yForm field named productquantity, and you are asking specifically about how to access the value of a yForm field from JavaScript. If I understand this correctly, you can do so by calling the following JavaScript API:
ORBEON.xforms.Document.getValue("sum");
You can find more about this and other related API on Client-side JavaScript API.
I know this is a very basic JS question and I apologize. I am very new to this. I must be making a mistake somewhere. Here is what I am working with:
HTML Form
<div class='nameinput'>Please enter your name:</div>
<input id='name1' placeholder='Name...' type='text'>
<input type='submit' value='Connect' class="submitForm">
</div>
Javascript Code
function store() {
name = $("input#name1").val();
}
function init() {
$('.submitForm').on('click', function(){
if (name === '') {
alert("Please Enter Name");
}
else
store();
$(".login_page").animate({
'opacity': '0' });
I am not sure what I am missing here. The name = $("input#name1").val(); works fine but I can't seem to get the if to work right. Could someone kindly explain my issue here?
The variable name is undefined in the scope. You need to get it when the button is clicked. Change your code to something like this:
function init() {
$('.submitForm').on('click', function() {
var name = $("#name1").val();
if (name === '') {
alert("Please Enter Name");
}
// rest of the code
}
Also, you don't need the function store if you're using it only to initialize the variable name. Additionally, the selector input#name1 can be simplified to #name1 as all elements in the page should have unique IDs.
I am still new and learning JavaScript in many ways, so don't worry.
First, you should always try to debug the problem as much as possible. One easy way to do that is simply putting in test console.log() statements printing out relevant values so you 1) know what is firing and when, and 2) what values they are working with. That'll get you out of a lot of problems like this.
Second, your if statement (if (name === '') {) I believe is the problem. You should look at this and ask yourself why isn't it working? Is your logical comparison written wrong? are you comparing the right things? What values are you comparing?
Your problem is: where is name defined? You use it in store(), but it pops up for the first time in init in that if statement. It's not defined prior to that.
So the first time it fires, that can't be true, and it goes to the else clause and then store() fires.
In this case, you've lost track of scope; where your variables are being defined.
The easiest solution is to add another statement to extract the value of the input you are trying to check and making sure it's not null/empty. For that matter, I don't think you need store() at all, unless you had some specific purpose for it.
I'm trying to have the value of an HTML element equal the value of another. Sounds simple enough but when I try various options, it doesn't work
Here's what I'm trying to do:
I tried a few things. First, I made a javascript function that when they info button is pressed, it simply sets the value of the newname textbox to the title and then I was going to use javascript to trim off the extension. As you can see on the page, it simply outputs {{modal_header}}. I believe this is because when the function is being called, the value hasn't been set yet and that's why it's outputting this. I couldn't find out where else to call the function in order for it to work.
To get around that issue, I tried using PHP to retrieve the name. The only thing I could find related to the name was which in stuck in the value property of newname, but this output only the last file in the directory, no matter what file you selected.
I tried a bunch of different little things, but without any luck. You guys have any ideas?
Website: http://box.endurehosting.com/
HTML: http://pastebin.com/dZ5rKGUY
try this code
$(function(){
var title = $("#title").html();
title = title.substr(0, title.indexOf('.'));
$("#newname").val(title);
})
I have a picture quiz with a single input field for each image. I need a way to check if the value entered into the input field matches the correct answer and if it does, perform a few operations like add/remove a few CSS classes and increase the score count. And I need this to be done in real time using AJAX.
This is the pseudo-code for the functionality that I want...
if input value == correct answer {
some jQuery to add/remove a few classes
some PHP (I assume) to add 1 to the score count
} else {
some jQuery to add/remove a few classes
}
However, how do I get the value of the input field in real time? Do I still use PHP Post to get the value? What AJAX do I need to do this without a page refresh?
Any help would be greatly appreciated... I'm okay with PHP but very little experience with AJAX. Thank you.
yes this can be done with AJAX, and with jquery (which is not the same).
You can get input string with $("#input_id").val() , show a simple error message with alert("my message"), and use the onchange event. see also what is e.preventDefault() to make the form not submitable if all is not correct
If you want to check if datas are correct with a php request, that's also possible with $.ajax()
See jquery documentation on the web for further information about all theses functions
In case this is useful for anyone else, this is how I achieved my original goal. Contrary to what I first thought, this can all be done using JS and does not require PHP or AJAX to update in real time.
$('input').keyup(function () {
if (($(this).val() == 'test') {
//Stuff
} else {
//Other Stuff
};
});
The .keyup() function is what allows this to work in real-time, as it is called whenever a key is hit on your keyboard.
Then within this, the .val() function is what is used to check the actual user-entered value of the input field. In this case, if this value equals 'test', then it performs whatever you place in the if statement.
Hope that helps if anyone has stumbled across this question hoping for this answer!
Firstoff I'd like to add I've been learning javascript for like only 2 days now. I'm pretty much way ahead of myself with what I'm trying to get but here goes.
I have a json array from which I get data to replace/insert in my page. The first problem I have is that if it comes across an empty ('null') key it will just stop. Will not even try to continu.
document.getElementById("id1")src=json.img1.link;
document.getElementById("id2")src=json.img2.link;
document.getElementById("id3")src=json.img3.link;
json.img2.link is empty ('null' response from json.). javascript will then not replace "id2" but it also won't replace "id3".
I'm now trying to find a solution where it will if nothing else at least set a default.
The script is not continuing executing because it comes to an error --trying to access property link of an undefined object
Try
document.getElementById('id2').src = json.img2 ? json.img2.link : 'defaultLink';
This way your are checking for undefined (ie null) object in img2 and assigning the default value. This assumes that what is not defined (null) is the img2 object.
Actually I don't think your code should work at all, you are missing the. before the src So, try
document.getElementById("id1").src=json.img1.link;
document.getElementById("id2").src=json.img2.link;
document.getElementById("id3").src=json.img3.link;
and let us know if that doesn't solve the problem.
Btw, +points for learning JavaScript and not just straight into jQuery!