I need to store some dynamic variables in a Json file (i was told this would work) to be able to load them in multiple pages. Per example a customer should be able to select one thing in one page (a highlighted div) and then go to another page, select some items there and be able to go pack to the other page and that div is still selected. (Variables remembered) Now i tried to google and search here but found nothing matching my description. Please help me!
Try using localstorage, store selected values by user in localstorage and check this at page ready or load if it exists in loacalstorage show that value or div with highlight as per your functionality and if localstorage doesn't had a value then consider it as first time user come to this page.
but be careful using localstorage as you have to clear it when you done with it, it may cause memory leakage problem.
Related
How do I, using JavaScript, retain the state of the search page, when a user clicks into a search result, but then goes back to the main search page.
e.g.
HTML:
https://startech-enterprises.github.io/docs/guides/data-analytics/data-analytics.html
There are 5 elements that determine what is shown on the page:
What tags are clicked in the three filter menus, on the side
What search term is typed into the search menu bar, at the top
The pagination page that is selected, at the bottom
Problem is that whenever I go into the search result, and navigate back to the main search page, the search page resets itself, so I have to re-enter the search criteria again - which can be quite annoying.
If I click 'back' in the browser, the search page state is retained, but the search script stops working. Also, using the 'browser' back button only goes back one 'link' - so if the user clicks on several links in any page (returned from the search), they have to press the 'back' button many times, to get back to the main search page - which again isn't ideal.
Any ideas on how to solve this? Would seem like a fairly common problem?
The site is purely static, (generated using Markdown and Jekyll). Site interactivity is set with Vanilla JavaScript, and SASS/SCSS.
Pls do help!
Many thanks in advance.
Sachin
UPDATE: This has now been solved based on the answers given below
You can simply do it by saving the data in users device . You can do it by using cookies or by localStorage. I prefer localStorage because users can deny cookies easily.
Like this-
localStorage.setItem("tags",tagItemsInAnArray);
And laterlocalStorage.getItem("tags");
You can use localStorage to keep the search filter data. The concept is to keep all filter data in an array and keep that array in the localStorage of the browser before any redirection. Here is an official documentation with implementation of localStorage.
Here is a demo:
//before redirection
let filterData = [];
localStorage.setItem("searchFilter", JSON.stringify(filterData));
//after page-load
let cachedFilterData= JSON.parse(localStorage.getItem("searchFilter"));
if(cachedFilterData.length>0){
//cache data exist
}
//when you need to delete cache
localStorage.removeItem("searchFilter");
I need to create a Chrome extension that will work only for one webpage with specific URL. It will monitor changes to list of items (orders) located on page and if new order appears, it will read some values from order and do something with them. It also may be neccessary to refresh the page from time to time (using timer, maybe).
What architechture will be suitable to accomplish such a task?
Now - to thoughts I have so far. I think now of using only one content script bound to page URL. Will it be enough? Or should I introduce some background script also? Or anything else?
As #wOxxOm said in the comments, creating one content script must be sufficient for reading the values and page refreshing.
I'm currently working on one project which uses jsp, javascript, spring among others. I have a search page implemented where user can search by different criteria. (e.g. http://localhost:8080/service/timesheet/view?status=A&size=100&sort=startDate,asc&page=0&f_startDate_gte=2016-02-01&f_endDate_lte=2016-02-29)
When I click on some entry in this page I am redictered to the new page where a single item is shown. Now I want in this page to have a button which will bring me back to the search page but with the previous configured criterias. But the thing is that I can acces to those single item pages also from other points in application. What would be the best way to do this? Does it need to be done with passing parameters from jacaScript and checking out what was the previous visited page? Thank you for your help!
put it in user session object with a key that uniquely identify it. then you can make the decision based on that key/object pair.
I have a website, and I am making widgets for it. Those widgets are draggable. I was wondering how I would save the positions of the widget (And if it is hidden or not [disabled or enabled]), and load the positions and if it is hidden or not when you join the website again (With the same user). Thank you for your time, please post comments if you don't understand what I need.
I am assuming that your widgets are in a <ul>, one <li> per widget which is quite normal.
Be able to position them
You need to arrange the widgets in a specific order in the first place. Imagine you already did the hard work and have the data that a user would have. Hard-code that and get your modules to appear correctly. Change the data, see if the modules appear as you expect.The user needs to drag them. jQuery draggable is your friend.
Prove you can get your data
Be able to get the order of widgets from the page after they've moved. draggable example shows a .serialize() function. Also you need to know which is on and which is off. You can create another list using jQuery .map() which can return their ID and state if you ask it nicely. Alert to the screen, write to the document, or preferably use console.log().
Interact with the server
You can skip this if you want to test using just cookies because the browser can set those.
But if you want to store this with the user's info in case they log out, start a new session or use another computer you'll need to use a database.
You need to know about sending data from browser to the server using ajax. jQuery is your friend.
You need to learn about storing user info in the database.
Restore the positions
You want to be able to set the positions of the widgets from a list that isn't hard-coded, so be able to order the widgets correctly on page load using the data that you saved. You did this in the first step but with hard-coded data.
What you will have to do is:
Save the status at a given time. For example when you change it.
$('#toBeDragableId').draggable({
// options...
drag: funciton(event,ui){
theUserposition = ui.position;
}
});
You need to save theUserposition in a consistent way, like a database or using cookies or client side storage. Afterwards, you need to recove it and set it when you load the page.
Similar Question
Example using Cookies
in gmail if you check mark email 4 then move to different set of 50 or 25 records and mark selection 26 then both 4 and 26 are retained if you move back and forth.
How does google do this?
would it be possible to do something like this in a page that brings only 50 records and when NEXT is clicked...it again goes to DB to bring next set of 50 records.
You don't technically change pages, it's all the same page, the content is just changed dynamically with JavaScript.
Take a close look at the url. Only the hash part of it changes. Which means you don't really load new pages when you click things on Gmail. They just change the elements shown to you with javascript.
Similar thing could be done with page loads if you use localStorage or sessionStorage
You could do the page you're describing with Ajax techniques.
The inner pages are most likely loaded using AJAX. Kind of like iFrames, you monitor the links that are clicked and only load the inner part of what you're after so that you aren't loading things twice...
It's possible that these are saved in JavaScript or Cookies... I would probably store them as a JavaScript array of selected checkboxes personally... depending on how much load you're already giving to the user.