javascript - How can I change an HTML input value's data type to integer? -


I'm using jQuery to get the value presented by an input button. The value is considered to be an integer, I increment it after one and want to display it. 

  // Countdown to instant voting button ID countup = $ (this) .closest ('li'). ('Div> Input.green') appears. Attr ('id'); Var calculation = $ ("#" + setup) .val () + 1; Warning (count);   
 The above code gives me a concatenated string. Say for example value 3. I want to get 4 as the output, but the code produces 31. 
 How can I change the data type of an HTML input value to an integer ?   
 After 
 
 to convert  strValue  to an integer, either use:  
  parseInt (StrValue, 10);   
 or single  +  operator.  
  + strValue   radix 
 Note that the parameter is due to  parseInt  because a key 0 is set to  parseInt  The reason that the input was in octal, and input of  010  would be 8 instead of 10

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