Question about how jquery gets the input value

This article from: http://jeasony.iteye.com/blog/307684 I was just getting started with jquery and was unfamiliar with many things. When $ ("# ID") is used to obtain the page input element, it is found that $ ("# ID"). value cannot get the value.   Finally, with the help of the great Baidu, I found the cause of the problem: $ ("") Is a jquery object, not a DOM Element   Value is the attribute of Dom element.   Jquery corresponds to Val.   Val (): obtains the current value of the First Matching Element.

 Val (VAL): sets the value of each matching element.  

 So,CodeIt should be written as follows: Value: val = $ ("# ID") [0]. value;Assignment:$ ("# ID") [0]. value = "New Value ";
Or $ ("# ID"). Val ("New Value ");
 

Alternatively, you can: val = $ ("# ID"). ATTR ("value ");