Bahasa indonesia: Bagaimana eksekusi ajax satu per satu di Loop

<div id=“demo”></div>
<script>
/
 * Define global variable
 * @var {int} indexLoop global loop indexer
 * @var {int} lastLoop global last iteration for global loop indexer from loop initializer
 * @var {array} queueLoop global array to be processed from ajax
 * @var {array} arrayLoop define array to be proccesed
 */

var indexLoop = 0,
  lastLoop = 0,
  queueLoop = [],
  arrayLoop = [‘apple’, ‘melon’, ‘watermelon’, ‘grapes’];

for (var i = 0; i < arrayLoop.length; i++) {
  queueLoop.push(arrayLoop[i]);
  if (i == arrayLoop.length - 1) {
    lastLoop = i + 1;
    ajaxLoop(function () {
      var b = document.createElement(‘b’);
      b.innerHTML = ‘Processing all item ’ + indexLoop + ’ of ’ + lastLoop + ’ succedeed<br/>’;
      document.getElementById(‘demo’).appendChild(b);
    });
  }
}
/
 * Initialize global ajaxLoop function
 * @param {function} lastFunction function to be executed on last iteration
 /
function ajaxLoop(lastFunction) {
  if (indexLoop < lastLoop) {
    $.ajax({
      url: ‘https://reqres.in/api/users?page=’ + (indexLoop + 1),
      beforeSend: function () {
        var b = document.createElement(‘b’);
        b.innerHTML = ‘Processing item ’ + indexLoop + ’ of ’ + lastLoop + ‘<br/>’;
        document.getElementById(‘demo’).appendChild(b);
      },
      success: function (response) {
        var b = document.createElement(‘b’);
        b.innerHTML = ‘Processed item success ’ + this.url.split(’=’)[1] + ’ of ’ + lastLoop + ‘<br/>’;
        document.getElementById(‘demo’).appendChild(b);
      },
      error: function () {
        var b = document.createElement(‘b’);
        b.innerHTML = ‘Processed item error ’ + this.url.split(’=’)[1] + ’ of ’ + lastLoop + ‘<br/>’;
        document.getElementById(‘demo’).appendChild(b);
      },
      complete: function () {
        var b = document.createElement(‘b’);
        b.innerHTML = ‘Processed item complete ’ + this.url.split(’=’)[1] + ’ of ’ + lastLoop + ‘<br/>’;
        document.getElementById(‘demo’).appendChild(b);
      }
    });

    indexLoop++;
    ajaxLoop();
    if (indexLoop == queueLoop.length) {
      if (typeof lastFunction == ‘function’) {
        lastFunction();
        /* reseting global indexer */
        indexLoop = 0;
      }
    }
  }
}
</script>

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[JS] How to delay ajax one by one in loop

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