Unusual glitch found in Angular application's JavaScript code

I am completely puzzled by this issue: I have a Angular app and I'm trying to update the class using a simple JavaScript string update where the class name is bound to the DOM. The strange thing is that in my application, the most basic statement for changing the text doesn't work, but if I execute the exact same line in the Chrome console, the text does change. Why is this statement not functioning within my app? Is there some other factor at play or am I overlooking something?

 $scope.changesize = function() {
            var fsize = $scope.form_size.split("-").pop();  // "form-group-xs";

            if (fsize == "xs") {fsize = "sm"}; //fsize = "xs";
            if (fsize == "sm") {fsize = "md"};
            if (fsize == "md") {fsize = "lg"};
            if (fsize == "lg") {fsize = "xs"};
            $scope.form_size = "form-group-" + fsize;
            console.log($scope.form_size); // returns "form-group-xs" !!??!!!?!
        }

Here is a screenshot from my console as evidence: https://i.sstatic.net/B5JX5.jpg

javascriptangularjsgoogle-chrome

Answer №1

It is recommended to utilize the if else statement instead of just using an if. The issue arises when all the if conditions are met, resulting in the assignment of fsize to xs.

Answer №2

Instead of using multiple if-else statements, a switch statement could be implemented in this scenario:

var fsize = $scope.form_size.split("-").pop();
switch (fsize){
    case "xs":
        fsize = "sm";
    break;
    case "sm":
        fsize = "md";
    break;
    case "md":
        fsize = "lg";
    break;
    case "lg":
        fsize = "xs";
    break;
}

$scope.form_size = "form-group-" + fsize

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