jquery - JQuery integer value won't change?

Question

I have a function:

function my_function_name()
    {
        var $obj = $my_object;
        var idx = Number($obj.order);
        var newIndex = idx+1;
    }

"newIndex" is NOT "idx + 1" but simply the same value as "idx". "$obj.order" is holding an integer value.

Any ideas what is going on?

Answer 1

演示小提琴

function num(i) {
    this.order = i;
}


$my_object = new num(10);

var $obj = $my_object;
var idx = Number($obj.order);
var newIndex = idx + 1;

根据你的问题newIndex应该有10，但我正在11输出（见小提琴）