Ways to convert a for loop with asynchronous operation embedded within

Question

Ways to convert a for loop with asynchronous operation embedded within

In a unique situation on my webpage, I have a varying number of grids. When the user clicks a button, I need to perform the following steps:

For each grid

Retrieve data from the grid
Prompt the user to input additional data in a dialog box
Execute a $.post() operation after the dialog box is closed
Move on to process the next grid

Below is a snippet of the code I am working with:

for (var i = 0; i < grids.length; i++) {
  var grid = grids[i];

  // Process some grid's data
    ...

  // Prompt the user with a dialog box for extra data input
    dialog.open(); // dialog refers to a Telerik Window widget

  // Trigger a $.post() request upon closing the dialog box
    $.post(...)
      .fail(function(error) {

      })
      .done(function(data) {

      });
}

The issue I'm encountering lies in the asynchronous behavior of the dialog box (leveraging Telerik Window widget). Therefore, I seek assistance in converting the for loop to make the process synchronous.

Is there anyone who can guide me on how to achieve this?

Thank you.

javascript

Answer 1

Answer №1

To remove the first element from an array in a function, you can use the shift method:

var numbers = [
    10,
    20,
    30,
    40
];

function processArray() {
    if (numbers.length) {
        var number = numbers.shift();

        // Using setTimeout for asynchronous behavior
        setTimeout(function() {
            // Perform some action
            console.log(number);

            if (numbers.length) {
                processArray();
            }
        }, 100);
    }
}

processArray();

Answer 2

To remove the first element from an array in a function, you can use the shift method:

var numbers = [
    10,
    20,
    30,
    40
];

function processArray() {
    if (numbers.length) {
        var number = numbers.shift();

        // Using setTimeout for asynchronous behavior
        setTimeout(function() {
            // Perform some action
            console.log(number);

            if (numbers.length) {
                processArray();
            }
        }, 100);
    }
}

processArray();

Ways to convert a for loop with asynchronous operation embedded within

Answer №1

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