Reusable Code: How can you implement a function that calls itself multiple times in JavaScript?

Question

Reusable Code: How can you implement a function that calls itself multiple times in JavaScript?

My goal is to continuously update the current time every minute using a countdown timer. Unfortunately, my code seems to be malfunctioning as indicated by an error message in the Firebug console stating that the function getStatus() is not defined. How can I properly call this function at regular intervals?

jQuery(document).ready(function($){

    $(function() {   
     getStatus();
    });

    function getStatus() {
      var post_id = $('#post_id').val();
      var nonce = $('#_wpnonce').val();
      jQuery.ajax({
        url : ajaxurl,
        data : {action: "update_edit_lock", post_id : post_id, nonce: nonce },
        success: function(response) {
          if(response == "false") {
            alert("failed")
          }
          else {
            $("#message").html(response)
          }
        }
        });
      setTimeout("getStatus()",60000);
    }
    }, (jQuery));

javascript

Answer 1

Answer №1

It appears that your problem lies in the fact that getStatus is enclosed within another callback function. You can address this by either using window.getStatus = function(){}, or modifying your code to resemble the following:

jQuery(document).ready(function($){
    var getStatus = function() {
      var post_id = $('#post_id').val();
      var nonce = $('#_wpnonce').val();
      jQuery.ajax({
        url : ajaxurl,
        data : {action: "update_edit_lock", post_id : post_id, nonce: nonce },
        success: function(response) {
          if(response == "false") {
            alert("failed")
          }
          else {
            $("#message").html(response)
          }
        }
      });
      setTimeout(getStatus,60000);
    };

    $(function() {   
     getStatus();
    });

},(jQuery));

Avoid passing a string to setTimeout as it will evaluate the string using eval, which is generally not recommended and unnecessary for your code

Answer 2

It appears that your problem lies in the fact that getStatus is enclosed within another callback function. You can address this by either using window.getStatus = function(){}, or modifying your code to resemble the following:

jQuery(document).ready(function($){
    var getStatus = function() {
      var post_id = $('#post_id').val();
      var nonce = $('#_wpnonce').val();
      jQuery.ajax({
        url : ajaxurl,
        data : {action: "update_edit_lock", post_id : post_id, nonce: nonce },
        success: function(response) {
          if(response == "false") {
            alert("failed")
          }
          else {
            $("#message").html(response)
          }
        }
      });
      setTimeout(getStatus,60000);
    };

    $(function() {   
     getStatus();
    });

},(jQuery));

Avoid passing a string to setTimeout as it will evaluate the string using eval, which is generally not recommended and unnecessary for your code

Answer 3

Answer №2

To ensure smooth execution, consider utilizing setInterval(getStatus, 60000) instead. However, if not applicable, resort to using setTimeout(getStatus, 60000). Avoid employing a string as the function callback; opt for a named function instead.

Answer 4

To ensure smooth execution, consider utilizing setInterval(getStatus, 60000) instead. However, if not applicable, resort to using setTimeout(getStatus, 60000). Avoid employing a string as the function callback; opt for a named function instead.

Answer 5

Answer №3

To continuously check the status of a post, you can use the

setInterval(function, milliseconds)

function.

jQuery(document).ready(function ($) {
    var getPostStatus = function() {
        var postId = $('#post_id').val();
        var nonce = $('#_wpnonce').val();
        jQuery.ajax({
            url: ajaxurl,
            data: {
                action: "update_post_status",
                postId: postId,
                nonce: nonce
            },
            success: function (response) {
                if (response == "false") {
                    alert("Update failed")
                } else {
                    $("#status_message").html(response)
                }
            }
        });
    }
    setInterval(getPostStatus, 1000);
}, (jQuery));

Answer 6

To continuously check the status of a post, you can use the

setInterval(function, milliseconds)

function.

jQuery(document).ready(function ($) {
    var getPostStatus = function() {
        var postId = $('#post_id').val();
        var nonce = $('#_wpnonce').val();
        jQuery.ajax({
            url: ajaxurl,
            data: {
                action: "update_post_status",
                postId: postId,
                nonce: nonce
            },
            success: function (response) {
                if (response == "false") {
                    alert("Update failed")
                } else {
                    $("#status_message").html(response)
                }
            }
        });
    }
    setInterval(getPostStatus, 1000);
}, (jQuery));

Reusable Code: How can you implement a function that calls itself multiple times in JavaScript?

Answer №1

Answer №2

Answer №3

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