Having success in FF and Chrome, but encountering issues in IE? What could be causing this disparity

Question

Having success in FF and Chrome, but encountering issues in IE? What could be causing this disparity

My partner wrote a script, but he is currently offline so I am trying to troubleshoot the issue on my own.

Here is the current code we are working with:

function checkProgress(Progress) {

    // Retrieve progress status
    $.get('http://www.site.com/progress/'+Progress, { }, function (response) {

        // Evaluate the response
        eval(response);
    });
}

On our webpage, we have this:

// Begin checking progress status
var Progress = $('#Progress').val();
checkStatus = setInterval('checkProgress("'+Progress+'")', 1000);

The script works perfectly in Firefox and Chrome, however it seems to continuously update the status in those browsers. In Internet Explorer, it only retrieves the progress status once and then stops updating.

What could be causing this issue? If more code is necessary for analysis, please let me know and I will provide additional details.

Thank you in advance.

javascript ajax internet-explorer

Answer 1

Answer №1

Without the complete value of the response, it's challenging to provide a clear solution. What is being displayed in the console? Any error messages?

One suggestion would be to fetch data from the server, parse it, and respond accordingly. This approach offers multiple benefits such as maintaining code coherence, enforcing structure, and facilitating easier debugging compared to using eval blindly.

It is also recommended to keep JavaScript code within JavaScript files instead of embedding them as strings for evaluation. For instance, consider replacing your setInterval with an anonymous function implementation:

ProgressStatus = setInterval(function(){
  progressStatus( $('#Progress').val() );
}, 1000);

Answer 2

Without the complete value of the response, it's challenging to provide a clear solution. What is being displayed in the console? Any error messages?

One suggestion would be to fetch data from the server, parse it, and respond accordingly. This approach offers multiple benefits such as maintaining code coherence, enforcing structure, and facilitating easier debugging compared to using eval blindly.

It is also recommended to keep JavaScript code within JavaScript files instead of embedding them as strings for evaluation. For instance, consider replacing your setInterval with an anonymous function implementation:

ProgressStatus = setInterval(function(){
  progressStatus( $('#Progress').val() );
}, 1000);

Answer 3

Answer №2

When something is not working, it's like trying to solve a puzzle without all the pieces. For future reference, please provide more details on what exactly is malfunctioning. From my understanding, it seems that the issue lies in the system not updating the new status on the get request and continuously fetching the old one.

We need to disable caching

$.ajax({
  url: "http://www.site.com/progress/"+Progress,
  cache: false,
  success: function (response) {
        // Manipulate response data dynamically
        eval(response);
    }
});

Answer 4

When something is not working, it's like trying to solve a puzzle without all the pieces. For future reference, please provide more details on what exactly is malfunctioning. From my understanding, it seems that the issue lies in the system not updating the new status on the get request and continuously fetching the old one.

We need to disable caching

$.ajax({
  url: "http://www.site.com/progress/"+Progress,
  cache: false,
  success: function (response) {
        // Manipulate response data dynamically
        eval(response);
    }
});

Answer 5

Answer №3

When it comes to using setInterval, keep in mind that there is no set standard, so the outcome of passing a string as the first parameter can vary across different browsers. As stated on MDC:

The syntax involves providing a string of code that you want to run repeatedly.

This behavior is commonly observed in Firefox and Chrome browsers.

In contrast, Internet Explorer likely parses the string once and then repeats that execution. While this may offer optimization, your function will receive the same parameter each time.

Additionally, according to MDC:

(This syntax is discouraged for similar reasons as using eval())

A possible solution involves retrieving the value of Progress within the repetitively called function:

function progressStatus() {

    var Progress = $('#Progress').val();

    // Obtain progress status
    $.get('http://www.site.com/progress/'+Progress, { }, function (response) {
                                     //   ↑ caution!
        // Evaluate the response
        eval(response);  // beware!
    });
}

This approach allows you to easily invoke:

setInterval(progressStatus, 1000);

However, incorporating a user-editable input field like Progress in a URL and utilizing eval to interpret a response without validation poses significant security risks. It's advisable to use a variable within a closure to manage Progress (aside from presenting it to the user).

Answer 6

When it comes to using setInterval, keep in mind that there is no set standard, so the outcome of passing a string as the first parameter can vary across different browsers. As stated on MDC:

The syntax involves providing a string of code that you want to run repeatedly.

This behavior is commonly observed in Firefox and Chrome browsers.

In contrast, Internet Explorer likely parses the string once and then repeats that execution. While this may offer optimization, your function will receive the same parameter each time.

Additionally, according to MDC:

(This syntax is discouraged for similar reasons as using eval())

A possible solution involves retrieving the value of Progress within the repetitively called function:

function progressStatus() {

    var Progress = $('#Progress').val();

    // Obtain progress status
    $.get('http://www.site.com/progress/'+Progress, { }, function (response) {
                                     //   ↑ caution!
        // Evaluate the response
        eval(response);  // beware!
    });
}

This approach allows you to easily invoke:

setInterval(progressStatus, 1000);

However, incorporating a user-editable input field like Progress in a URL and utilizing eval to interpret a response without validation poses significant security risks. It's advisable to use a variable within a closure to manage Progress (aside from presenting it to the user).

Answer 7

Answer №4

It appears that the issue may be related to caching in Internet Explorer. IE tends to cache by default in its settings.

To resolve this, try adding a random number at the end of the URL. This should help bypass any caching problems.

function checkProgressStatus(Progress) {

// Retrieve progress status
$.get('http://www.example.com/progress/'+Progress + "/rnd/" + Math.random(), { }, function (response) {

    // Evaluate the response
    eval(response);
});

}

Make sure to address any URL rewriting issues that may arise.

Answer 8

It appears that the issue may be related to caching in Internet Explorer. IE tends to cache by default in its settings.

To resolve this, try adding a random number at the end of the URL. This should help bypass any caching problems.

function checkProgressStatus(Progress) {

// Retrieve progress status
$.get('http://www.example.com/progress/'+Progress + "/rnd/" + Math.random(), { }, function (response) {

    // Evaluate the response
    eval(response);
});

}

Make sure to address any URL rewriting issues that may arise.

Answer 9

Answer №5

Is there a particular need for the quotation marks around "Progress" in your setInterval function? Remember, JavaScript is not concerned with types.

Why not give this a try?

ProgressStatus = setInterval(function(){ progressStatus(Progress); }, 1000);

In my opinion, this code is cleaner and easier to understand. However, I can't guarantee it will resolve your issue :)

Answer 10

Is there a particular need for the quotation marks around "Progress" in your setInterval function? Remember, JavaScript is not concerned with types.

Why not give this a try?

ProgressStatus = setInterval(function(){ progressStatus(Progress); }, 1000);

In my opinion, this code is cleaner and easier to understand. However, I can't guarantee it will resolve your issue :)

Answer 11

Answer №6

I suggest making a slight modification to the second code like this:

$(document).ready(function(){

var ProgressValue = $('#Progress').val();
UpdateStatus = setInterval('updateStatus("'+ProgressValue+'")', 1000);

}

This adjustment might work better. Feel free to give it a try. I'm not very familiar with jQuery, but this should be a possible solution.

Answer 12

I suggest making a slight modification to the second code like this:

$(document).ready(function(){

var ProgressValue = $('#Progress').val();
UpdateStatus = setInterval('updateStatus("'+ProgressValue+'")', 1000);

}

This adjustment might work better. Feel free to give it a try. I'm not very familiar with jQuery, but this should be a possible solution.

Having success in FF and Chrome, but encountering issues in IE? What could be causing this disparity

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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