JS變量與IF ELSE

Question

我在這裏掙扎。我的JS在下面。 這裏的目標 - 用戶選擇課程類型 - WS或AC。 如果選中「現場」，則將AC值更新爲課程重量下的1.5。

人數有不同的值，取決於是否選擇AC或WS。因此，在計算總計函數中有一個if語句，用於查看課程類型值 - AC或WS。

JSHint是在257行報告 - 預期條件表達式，而是看到了任務。

    //Set up an associative array 
       //The keys represent the size/weightof the course type 
       //The values represent the weight of the course type 
       var course_weight = []; 
       course_weight["AC"]=1; 
       course_weight["WS"]=1; 

       //Set up an associative array 
       //The keys represent the size/weightof the course type 
       //The values represent the weight of the course type 
       var course_type = new Array(); 
       course_type["AC"]="AC"; 
       course_type["WS"]="WS"; 


       //Set up an associative array 
       //The keys represent the number of days 
       //The value represents the number of days 
       //We use this this array when the user set the number of days from the form 
       var number_days= new Array(); 
       number_days["None"]=0 ; 
       number_days["1"]=1 ; 
       number_days["2"]=2 ; 
       number_days["3"]=3 ; 
       number_days["4"]=4 ; 
       number_days["5"]=5 ; 


       //Set up an associative array 
       //The keys represent the number of AC people 
       //The value represents thenumber of people 
       //We use this this array when the user set number of people from the form 
       var ACnumber_people= new Array(); 
       ACnumber_people["None"]=0; 
       ACnumber_people["1"]=1; 
       ACnumber_people["2"]=2; 
       ACnumber_people["3"]=3; 
       ACnumber_people["4"]=4; 
       ACnumber_people["5"]=5; 
       ACnumber_people["6"]=6; 
       ACnumber_people["7"]=7; 
       ACnumber_people["8"]=8; 

        //Set up an associative array Workshop 
       //The keys represent the number of WS people 
       //The value represents thenumber of people 
       //We use this this array when the user set number of people from the form 
       var WSnumber_people= new Array(); 
       WSnumber_people["None"]=0; 
       WSnumber_people["1"]=4; 
       WSnumber_people["2"]=4; 
       WSnumber_people["3"]=4; 
       WSnumber_people["4"]=4; 
       WSnumber_people["5"]=4; 
       WSnumber_people["6"]=5; 
       WSnumber_people["7"]=5; 
       WSnumber_people["8"]=5; 


        //Onsite course delivery 
       //getTrainerExp finds the trainer expenses based on a check box selection 
       function getOnsite() 

       { 
        var onsite="no"; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the checkbox id="includeexp" 
        var onSite = document.getElementById('onsite'); 

        //If they checked the box set the course type value for Academy to 1.5 
        if(onSite.checked==true) 
        { 
         course_weight["AC"]=1.5; 
        } 
        //return the trainer expenses 
        return onsite; 
       } 


       // getCourseWeight() finds the course weight for integer based on the slection. 
       // take user's the selection from radio button selection 
       function getCourseWeight() 
       { 
        var courseweight=0; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the typre the user Chooses name=selectedcoursetype": 
        var selectedCourseWeight = theForm.elements["selectedcoursetype"]; 
        //Here since there are 4 radio buttons selectedCourseType.length = 4 
        //We loop through each radio buttons 
        for(var i = 0; i < selectedCourseWeight.length; i++) 

        { 

         //if the radio button is checked 
         if(selectedCourseWeight[i].checked) 
         { 
          //we set coursetype to the value of the selected radio button 
          //i.e. if the user choose the WS we set it to 1 
          //We get the selected Items value 
          //For example course_prices["WS".value]" 
          courseweight = course_weight[selectedCourseWeight[i].value]; 
          //If we get a match then we break out of this loop 
          //No reason to continue if we get a match 
          break; 
         } 
        } 

        //We return the coursetype 
        return courseweight; 
       } 


       // getCourseType() finds the course type - AC or WS based on the selection. 
       // take user's the selection from radio button selection 
       function getCourseType() 
       { 
        var coursetype="none"; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the typre the user Chooses name=selectedcoursetype": 
        var selectedCourseType = theForm.elements["selectedcoursetype"]; 
        //Here since there are 4 radio buttons selectedCourseType.length = 4 
        //We loop through each radio buttons 
        for(var i = 0; i < selectedCourseType.length; i++) 
        { 
         //if the radio button is checked 
         if(selectedCourseType[i].checked) 
         { 
          //we set coursetype to the value of the selected radio button 
          //i.e. if the user choose the WS we set it to 1 
          //We get the selected Items value 
          //For example course_prices["WS".value]" 
          coursetype = course_type[selectedCourseType[i].value]; 
          //If we get a match then we break out of this loop 
          //No reason to continue if we get a match 
          break; 
         } 
        } 

        if 
        //We return the coursetype 
        return coursetype; 
       } 


       //This function finds the number of days based on the 
       //drop down selection 
       function getNumberDays() 
       { 
        var numberdays=0; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the select id="days" 
        var selectedDays = theForm.elements["days"]; 

        //set Days equal to value user chose 
        //For example number_days["Lemon".value] would be equal to 5 
        numberdays = number_days[selectedDays.value]; 

        //finally we return numberdays 
        return numberdays; 
       } 


       //This function finds the number of AC people based on the 
       //drop down selection 
       function getACNumberPeople() 
       { 
        var ACnumberpeople=0; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the select id="people" 
        var selectedPeople = theForm.elements["people"]; 

        //set AC People equal to value user chose 
        //For example number_days["Lemon".value] would be equal to 5 
        ACnumberpeople = ACnumber_people[selectedPeople.value]; 

        //finally we return numberdays 
        return ACnumberpeople; 
       } 

       //This function finds the number of WS people based on the 
       //drop down selection 
       function getWSNumberPeople() 
       { 
        var WSnumberpeople=0; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the select id="people" 
        var selectedPeople = theForm.elements["people"]; 

        //set WSPeople equal to value user chose 

        WSnumberpeople = WSnumber_people[selectedPeople.value]; 

        //finally we return numberdays 
        return WSnumberpeople; 
       } 


       //getTrainerExp finds the trainer expenses based on a check box selection 
       function getTrainerExp() 

       { 
        var trainerexp="None"; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the checkbox id="includeexp" 
        var includeExp = document.getElementById('includeexp'); 

        //If they checked the box set trainerexp to ACMEEXP 
        if(includeExp.checked==true) 
        { 
         trainerexp=" - ACM-EXP"; 
        } 
        //return the trainer expenses 
        return trainerexp; 
       } 

       //getTrainerKit finds the kit shipping based on a check box selection 
       function getTrainerKit() 

       { 
        var trainerkit="None"; 
        //Get a reference to the form id="courseform" 
        var theForm = document.forms["courseform"]; 
        //Get a reference to the checkbox id="includekit" 
        var includeKit = document.getElementById('includekit'); 

        //If they checked the box set trainerexp to ACMEEXP 
        if(includeKit.checked==true) 
        { 
         trainerkit=" ACM-SHP"; 
        } 
        //return the trainer expenses 
        return trainerkit; 
       } 

       function calculateTotal() 
       { 
        //Here we get the total price by calling our function 
        //Each function returns a number so by calling them we add the values they return together 
        var pointstotal = 

        if (course_type = AC) 
        { 
         getCourseWeight() * getNumberDays() * getACNumberPeople() 
        } 
        else if (course_type = WS) 
        { 
         getCourseWeight() * getNumberDays() * getWSNumberPeople() 
        } 

        else 
         { 

        } ; 


        //display the result 
        var divobj = document.getElementById('totalPoints'); 
        divobj.style.display='block'; 
        divobj.innerHTML = "Points Total = " +pointstotal; 

       } 


       function calculateExp() 
       { 
        var expense = getTrainerExp() ; 
        var days = getNumberDays() ; 

        document.getElementById("trainerexp").innerHTML = "Please include Qty " +days +expense; 
        document.getElementById("trainertra").innerHTML = "Please include Qty 1 - ACM-TRA " 
       } 

       function calculateKit() 
       { 
        var kit = getTrainerKit() ; 

        document.getElementById("trainerkit").innerHTML = "Please include Qty 1 - " +kit; 

       } 

       function hideTotal() 
       { 
        var divobj = document.getElementById('totalPrice'); 
        divobj.style.display='none'; 
       } 

       function btns() 
       { 
        window.location.replace('http://btnsdownloads.co.uk/site/btns8/index08.html'); 

       } 

Answer 1

你有一個隨機的，如果在你的代碼語句：

if 
//We return the coursetype 
return coursetype;