javascript - jquery select element -


There are some problems with jQuery selectors.

My HTML is similar: 

  & lt; Form method = "" action = "" & gt; & Lt; P id = "question_1" & gt; & Lt; H1 id = "question" & gt; 1 question & lt; / H1> & Lt; Div id = "options" & gt; & Lt; P id = "option1" & gt; Input  A & lt; / P & gt; & Lt; P id = "option2" & gt; Input type = "radio" id = "option" name = "q_2" value = "2" /> gt; B & lt; / P & gt; & Lt; P id = "option3" & gt; Input type = "radio" id = "option" name = "q_3" value = "3" /> c & lt; / P & gt; & Lt; / Div & gt; & Lt; / P & gt; . . . & Lt; / Form & gt;

There are such questions there.

I & lt; P & gt; Examples include 3 radio buttons for each question, for example, 

  p # question_1 & gt; P # option3p # question_2 & gt; P # option3p # question_3 & gt;

How to do this?

I was trying without any success like this: 

  $ ("Form p # question_" + i) .filter ("p: eq ( 3) "). AddClass ("true");    
 
 
 
 I  & lt; P & gt;  There is a third radio button for each question. Start with 
 
 
  ^  selector  nth-child  in this way: 
 
  $ ('P [id ^ = "question"]: nth-child (3)'). AddClass ('true');  
 
 What is the  ^ = "question"  that it selects all the paragraphs starting with  question  text in your ID and Then  
 
  More info:  
 
     
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