To solve this issue, utilize a `closure`. Let me demonstrate with a simple example:
// JavaScript on Client-Side
window.onload = function() {
var f = (function() {
for (i = 0; i < 3; i++) {
(function(i){
var xhr = new XMLHttpRequest();
var url = "closure.php?data=" + i;
xhr.open("GET", url, true);
xhr.onreadystatechange = function () {
if (xhr.readyState == 4 && xhr.status == 200) {
console.log(xhr.responseText); // Outputs: 0, 1, 2
}
};
xhr.send();
})(i);
}
})();
};
// Server-Side (PHP in this case)
<?php
echo $_GET["data"];
?>
In your specific scenario, wrap the asynchronous call/function with a closure like so:
for (var i=0; i< this.selectedAvailableUnits.length; i++) {
(function(i) { // <--- key point
var unit = this.selectedAvailableUnits[i];
var unitId = unit.unitId;
var url = '/incident/' + currentIncidentId + '/assignUnit/' + unitId
$http.post(url).then(function(response) {
// Perform actions here
}, function(error) {
alert(error);
});
})(i); // <---- (the i variable might be omitted if it's not needed)
}
The following section is unrelated to the original question but addresses comments related to this answer.
An example shared on jsFiddle, as discussed in the comments below, appears to have some issues and doesn't showcase the intended functionality.
A detailed analysis reveals discrepancies in the output behavior of the code snippet provided, leading to multiple instances of 'Hello Kitty' being displayed unexpectedly. This inconsistency raises questions regarding the underlying mechanisms at play within the code implementation.
Further optimizations and corrections are necessary to affirm the reliability and accuracy of the script execution in varied environments such as jsFiddle.
By revisiting the coding structure and making relevant adjustments, a more stable and predictable outcome can be achieved, ensuring the desired results align with the expected outputs.