Question

我正在尝试在jquery中调用一个函数（函数showquiz（）），但它似乎立即激活了该函数。目标是在将draggable_ts拖动到droppable后显示测验。这是我上传所有内容的链接。 http://ceruleanlab.com/prozzle/prozzle.php。这是我的代码。

function dragItem_ts() {
$( function() {
    $( "#draggable_ts, #draggable-nonvalid" ).draggable();
    $( "#droppable" ).droppable({
      accept: "#draggable_ts",
     
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Correct!" )
           .alert("I am an alert box!");
      }
    }
    );
  } 
  );
showquiz();
}

function dragItem2() {
  showquiz();
$( function() {
    $( "#draggable2, #draggable-nonvalid" ).draggable();
    $( "#droppable2" ).droppable({
      accept: "#draggable2",
      
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Correct!" );
      }
    });
  } );
  
}

function tabulateAnswers() {
  // initialize variables for each choice's score
  // If you add more choices and outcomes, you must add another variable here.
  var c1score = 0;
  var c2score = 0;
  var c3score = 0;
  var c4score = 0;
  
  // get a list of the radio inputs on the page
  var choices = document.getElementsByTagName('input');
  // loop through all the radio inputs
  for (i=0; i<choices.length; i++) {
    // if the radio is checked..
    if (choices[i].checked) {
      // add 1 to that choice's score
      if (choices[i].value == 'c1') {
        c1score = c1score + 1;
      }
      if (choices[i].value == 'c2') {
        c2score = c2score + 1;
      }
      if (choices[i].value == 'c3') {
        c3score = c3score + 1;
      }
      if (choices[i].value == 'c4') {
        c4score = c4score + 1;
      }
      // If you add more choices and outcomes, you must add another if statement below.
    }
  }
  
  // Find out which choice got the highest score.
  // If you add more choices and outcomes, you must add the variable here.
  var maxscore = Math.max(c1score,c2score,c3score,c4score);
  
  // Display answer corresponding to that choice
  var answerbox = document.getElementById('answer');
  if (c1score == maxscore) { // If user chooses the first choice the most, this outcome will be displayed.
    answerbox.innerHTML = "You are correct" }
  if (c2score == maxscore) { // If user chooses the second choice the most, this outcome will be displayed.
    answerbox.innerHTML = "The correct answer is stvsp@am.sony.com"}
  if (c3score == maxscore) { // If user chooses the third choice the most, this outcome will be displayed.
    answerbox.innerHTML = "The correct answer is stvsp@am.sony.com"}
  if (c4score == maxscore) { // If user chooses the fourth choice the most, this outcome will be displayed.
    answerbox.innerHTML = "The correct answer is stvsp@am.sony.com"}
  // If you add more choices, you must add another response below.
}

// program the reset button
function resetAnswer() {
  var answerbox = document.getElementById('answer');
  answerbox.innerHTML = "Your result will show up here!";
}

function showquiz() {

var e = document.getElementById('wrapper');
e.style.display="block";

  
}

#droppable, #droppable2 { 
	width: 150px; 
	height: 150px; 
	padding: 0.5em; 
	float: left; 
	margin: 10px; 
}
#draggable_ts,#draggable2, #draggable-nonvalid { 
  	width: 100px; 
  	height: 100px; 
  	padding: 0.5em; 
  	float: left; 
  	margin: 10px 10px 10px 0; 
  }

body {
  font-family: sans-serif;
  background: green;
}
h2 {
  margin: 5px 0;
}
#wrapper {
  width: 600px;
  margin: 0 auto;
  background: white;
  padding: 10px 15px;
  border-radius: 10px;
  display: none;
}
input {
  margin: 5px 10px;
}
button {
  font-size: 18px;
  padding: 10px;
  margin: 20px 0;
  color: white;
  border: 0;
  border-radius: 10px;
  border-bottom: 3px solid #333;
}
#submit {
  background: green;
}
#reset {
  background: red;
}
#answer {
  border: 1px dashed #ccc;
  background: #eee;
  padding: 10px;
}

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Droppable - Accept</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" type="text/css" href="css/style.css">
  

  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script src=javascript/functions.js > </script>

</head>


<body>

<div id="draggable-nonvalid" class="ui-widget-content">
  <p>I'm draggable but can't be dropped</p>
</div>
 
<div id="draggable_ts" class="ui-widget-content">
  <img src="images/ts_image02.jpg">
</div>


<div id="draggable2" class="ui-widget-content">
	 <p>Drag me to my target</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>accept: '#draggable'</p>
</div>

<div id="droppable2" class="ui-widget-header">
  <p>accept: '#draggable2'</p>
</div>
 

 <div id="droppable3" class="ui-widget-header">
  <p>accept: '#draggable2'</p>	
</div>

<div id="wrapper" >
  <h1>What is the email address that the customer should send them to?</h1>  
  <form id="quiz">
    <!-- Question 1 -->
    <!-- Here are the choices for the first question. Each input tag must have the same name. For this question, the name is q1. -->
    <!-- The value is which answer the choice corresponds to. -->
    <label><input type="radio" name="q1" value="c1">
      stvsp@am
    </label><br />
    <label><input type="radio" name="q1" value="c2">
      svtsp@am
    </label><br />
    <label><input type="radio" name="q1" value="c3">
      mydocs@am
    </label><br />
    <label><input type="radio" name="q1" value="c4">
      docs@am
    </label><br />
    <button type="submit" id="submit" onclick="tabulateAnswers()">Submit Your Answers</button>
  <button type="reset" id="reset" onclick="resetAnswer()">Reset</button>
  </form>
  
  
  <div id="answer">Your result will show up here!</div>
</div>



 <script>
dragItem_ts();

dragItem2();

</script>
 
</body>
</html>

Answer 1

您必须在drop函数...

中执行您的功能

$(function() {

    $('#draggable_ts, #draggable-nonvalid').draggable();

    $('#droppable').droppable({
        accept: '#draggable_ts',
        drop: function( event, ui ) {  // This function is executed when you drop it.
            showquiz(); // So here you execute your function
            $(this).addClass('ui-state-highlight').find('p').html('Correct!');
        }
    });
});

一条建议，如果您链接javascript functions.js文件，则无需创建和执行dragItem_ts()和dragItem2()函数。只需将可拖动和可放置的代码放在document.ready函数中，该行为将被分配给您的div ...

$(function() {

    $('#draggable_ts, #draggable-nonvalid').draggable();
    $('#droppable').droppable({
        accept: '#draggable_ts',
        drop: function( event, ui ) {  // This function is executed when you drop it.
            showquiz(); // So here you execute your function
            $(this).addClass('ui-state-highlight').find('p').html('Correct!');
        }
    });

    $('#draggable2, #draggable-nonvalid').draggable();        
    $('#droppable2').droppable({
        accept: '#draggable2',
        drop: function( event, ui ) {  // This function is executed when you drop it.
            showquiz(); // So here you execute your function
            $(this).addClass('ui-state-highlight').find('p').html('Correct!');
        }
    });
});

...并在你的HTML中删除它......

<script>
    dragItem_ts();
    dragItem2();
</script>

我希望它有所帮助

用jquery调用函数

1 个答案: