動的HTMLブロックにスイッチケースを含める

Question

この動的HTMLブロックにスイッチ条件を含めるとします。どうやってやるの？

editQuestionBlockHTML=' <div class="addQuestionBlock" >' 
     +'<div class="selectQnLabel"><p class="selectQnLabel">Select a type of question</p>' 
     +'<p class="questionTypes">'; 



     switch(questionType) 
     { 
     case "Radio": 
     editQuestionBlockHTML += +' <select id="EditQuestionType" onchange="changeQuestionType();">' 
      +' <option value="radioBtn" selected="selected">Radio Button</option>' 

      +' <option value="checkBox">Check Box </option>' 
      +' <option value="pullDownMenu">Pull Down Menu</option>' 
      +' <option value="ratingScale"> Rating Scale</option>' 
      +' <option value="commentBox"> Comment Box</option>' 
      +' <option value="singleTextBox"> Single Text Box</option>' 
      +' </select>'; 
     break; 

     } 

    editQuestionBlockHTML+=+'</p></div>' 



     +'<div style="float:left;width:100%;">' 
     +' <p class="selectQnLabel">Enter Question</p>' 
     +' <p><textarea "EditQuestionTitle-'+questionId+'" class="inputBox" rows="4" cols="65" >'+questionText+'</textarea></p>' 
     +'<div style="clear:both;">' 

     +'</div>' 
     +'</div>' 
     +'<div style="float:left;width:100%;">' 
     +' <p class="selectQnLabel">Enter Choices (Each choice on a separate line)</p>' 
     +' <p><textarea id="editQuestionChoiceList-'+questionId+'" class="inputBox" rows="4" cols="65">' 
     +choicelist 
     +'</textarea></p>' 
     +'<div style="clear:both;">' 

     +'</div>' 
     +'</div>' 


     +'</div>' 
     +'</div>'; 
     return editQuestionBlockHTML; 

Answer 1

http://www.w3schools.com/js/js_switch.asp

ここではいくつかのドキュメントがあります。

Answer 2

「スイッチ」の状態は、JavaScriptで非常に簡単です：

switch(n){ 
    case 1: // it's like: if(n == 1) ... 
     /* do stuff */ 
    break; //really 'breaks' the switch and ignore everything else inside the switch 
    case 2: 
    case 3: //multiple matches ..it's like: else if(n == 2 || n == 3) 
     /* do stuff */ 
    break; 
    default: //default code if no match has been found with your cases .. it's like the last "else" in your if .. else statement 
     /* do stuff */ 
}