I have Fetched Value from Ajax to the Input but when I put in alert after that, It shows NaN, Even I can See the Value in input box [closed]

I have used code of ajax to fetch the value, It appears in input box, but when I pass value to alert it show NaN and If I inspect the Input Box in code, Value not showing.

In Html Page I can see value in input box but not in inspect element, So I am unable to use this value further as its showing NaN in alert.