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How Can Our HTML Homework Help You Write a Single Page Application?

I am assuming the use of Python / Django for the back end but any web framework will do, in a normal website you have templates that define the contents of each page (for example /about would give details about the site or the company, /news would give details of the news related to the product or services you provide), and when you visit the URL it changes the entire page, but you probably have a static header (company logo), navigation, possibly a sidebar. You would normally have your template which would specify the header, footer, and sidebar using some default and then would fill in the contents of the main body. This is a reasonable way of handling bulk changes, as most of the page would change anyway, but if you are dealing with a forum where the contents can change slightly (new messages come in) then you are reloading large amounts of data for no reason which increases the load on the server.

You can use some Javascript to perform a request for data, which has details about how the page should be updated. I use “+” to indicate add to existing web page, “-” to delete from the web page, so it returns a JSON response {“+”: {“#news”:” Just In…..”}} which is parsed using Jquery, so we check “+” and we are adding new content, we then go through the dictionary and use the key as the Jquery selector, and append the HTML code that was sent. If you want to have the ability to delete a comment, for example, you could use “comment_id_xxxx” as the div for each comment, then if you click delete, it does the server-side request which checks if you have the authorization, if you don’t it could return {“+”: {“#error”: “Sorry you are not authorized to delete that comment.” }} and if you are authorized it would return {“-”:{“#comment_id_xxxx” : “”}}, this schema allows you to combine multiple changes in a single update, so if some other users have added comments, you may get multiple entries in the “+” dictionary. This makes it much more lightweight, so you can automatically call the website every 30 seconds to see if there are any changes, which can respond with a {} if there is nothing to change.

Although this was about Python / Django and Jquery, the principles apply to any combination of websites, from PHP, ASP, Java, Node on the back end, to React, Angular and others on the front end. So if you are looking at writing a responsive single-page application we can handle it no matter the combination of technologies involved, even to fully Javascript-based ones that need no database interaction and where all content is downloaded during the initial deployment.

You can rely on Programming Homework Help to provide any HTML homework help you may need.

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