Refresh web content dynamically without having to reload the entire page using JavaScript

Currently, I am struggling to find a solution on how to dynamically update a section of a webpage using JavaScript when a user modifies an input field in another part of the same page. Unfortunately, my use of document.write is inhibiting me from making these updates without having to refresh the entire page. Admittedly, my proficiency with JavaScript is limited, so any guidance or advice on how to tackle this issue would be greatly appreciated. Ideally, I am looking for a solution that does not involve Ajax, as I believe the task at hand is relatively straightforward and I do not want to overcomplicate it.

The website I am working on contains a quote calculator with 5 sequential steps, where divs are displayed or hidden as users progress through each step seamlessly. The final step, Step 5, involves performing a calculation based on input from Step 1 and presenting the result using document.write. However, since users have the ability to go back to Step 1 and modify the input text, the calculated result in Step 5 becomes inaccurate upon their return.

I am keen on avoiding page reloads due to the implementation of jQuery for captivating transition effects during the step-by-step process. What strategy should I employ to address this particular dilemma?

While I am willing to conduct some independent research, I am uncertain about the starting point for resolving this issue.

javascriptdom-events

Answer №1

To ensure that the fields in step 5 are automatically updated, it is advisable to bind the calculations to the onchange event of the fields in step 1.

For example: In screen 1:

<input type="text" name="inputFromScreen1" id="input1" onchange="calculateResult()">

In screen 5:

<div id="results"></div>

JavaScript:

function calculateResult()
{
   //parse the values into float or int otherwise you'll get a concatenated string
   var result=parseInt($("#input1").val())+.....;

   //check if your result is a number
   if (!isNaN(result))
       $("#results").html('<p>'+result+'</p>');
}

*Please note: jQuery is used for DOM manipulation as it simplifies the process and offers cross-browser compatibility. Find more information at http://jquery.com/

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