javascript - jQuery Click function doesn't work on first child -


jQuery's click function is not working on Lee's first child 

  & Lt; Ul class = "clearfix" & gt; & Lt; Li class = "contracted" & gt; & Lt; A href = "#" & gt; & Lt; Span & gt; L1 & lt; B & gt;: Identify a number 10 times the value of & lt; / B & gt; & Lt; / Span & gt; & Lt; / A & gt; & Lt; / li & gt; & Lt; li class = "" & gt; & Lt; A href = "#" & gt; & Lt; Span & gt; L2 & lt; B & gt;: Identify a number, value of 10 times value & lt; / B & gt; & Lt; / Span & gt; & Lt; / A & gt; & Lt; / li & gt; & Lt; / Ul & gt;   
 I also tried to move down the function below. But it is not working. The full working example is given in JSField.  
  $ ('contracted'). Click (function () {$ (this) .Parent (). Attr ('class', 'expanded' $ ('Ul.expanded li.activeLesson'). Attr ('class', 'selected'); $ ( 'Ul.expanded li: not (selected)'). Attr ('class', '');});    
 
 
 Your  $ ('contracted'). Click (...)  code will bind any element with one click handler to that class  Runs that code at the moment  - It will not automatically work on other elements which have been added later in the class if you want to work on any Li element If there is a  contracted  class at the time of the click, use a delegate event handler set through  .on () :  
  $ ('ul'). ('Click', 'li.contracted', function () {...});   
 This click handler is sent to all < Code> ul , but then when one click is checked in jQuery, if clicked item  ul  matches the selector in the second argument and only your function If you call The bit.

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