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如果语句出现问题，则拖放Javascript

Angela 发表于 Dev
41
安吉拉

我目前正在使用HTML的拖放功能来开发JavaScript游戏。我在这里要做的是允许将随机生成的水果图像拖放到果冻图像上。然后，如果拖动的图像符合条件集（当数字图像数组索引== x，而水果图像索引为== y时），则将其放下。为了声明这个if语句，我从背景图片中获取值。（如果number的背景图像是x，而水果的背景图像是y）在我尝试为其设置条件之前，我的代码执行得很好。从逻辑上讲，我不明白为什么在有if语句的情况下它不起作用，甚至不显示图像。

编辑：尝试使用===代替=，仍然没有响应

编辑：按照注释删除分号后，其余代码执行正常。但是拖放不会响应。

编辑：图像url的声明变量，而不是直接在放置函数中使用url。拖放仍然无效。

var myNumber = new Array(9);

myNumber[0] = '1.png';
myNumber[1] = '2.png';
myNumber[2] = '3.png';
myNumber[3] = '4.png';
myNumber[4] = '5.png';
myNumber[5] = '6.png';
myNumber[6] = '7.png';
myNumber[7] = '8.png';
myNumber[8] = '9.png';

var numberImage1 =  "url(" + numberAddress + myNumber[0] + ")";
var numberImage2 =  "url(" + numberAddress + myNumber[1] + ")";
var numberImage3 =  "url(" + numberAddress + myNumber[2] + ")";
var numberImage4 =  "url(" + numberAddress + myNumber[3] + ")";
var numberImage5 =  "url(" + numberAddress + myNumber[4] + ")";
var numberImage6 =  "url(" + numberAddress + myNumber[5] + ")";
var numberImage7 =  "url(" + numberAddress + myNumber[6] + ")";
var numberImage8 =  "url(" + numberAddress + myNumber[7] + ")";
var numberImage9 =  "url(" + numberAddress + myNumber[8] + ")";



var fruitCloudOne = new Array(15);

fruitCloudOne[0] = '3apple.png';
fruitCloudOne[1] = '3banana.png';
fruitCloudOne[2] = '3blueberry.png';
fruitCloudOne[3] = '3plum.png';
fruitCloudOne[4] = '3strawberry.png';

fruitCloudOne[5] = '5apple.png';
fruitCloudOne[6] = '5banana.png';
fruitCloudOne[7] = '5blueberry.png';
fruitCloudOne[8] = '5plum.png';
fruitCloudOne[9] = '5strawberry.png';

fruitCloudOne[10] = '8apple.png';
fruitCloudOne[11] = '8banana.png';
fruitCloudOne[12] = '8blueberry.png';
fruitCloudOne[13] = '8plum.png';
fruitCloudOne[14] = '8strawberry.png';

var apple3 = "url(" + fruit1Address + fruitCloudOne[0] + ")";
var banana3 = "url(" + fruit1Address + fruitCloudOne[1] + ")";
var blueberry3 = "url(" + fruit1Address + fruitCloudOne[2] + ")";
var plum3 = "url(" + fruit1Address + fruitCloudOne[3] + ")";
var strawberry3 = "url(" + fruit1Address + fruitCloudOne[4] + ")";

var apple5 = "url(" + fruit1Address + fruitCloudOne[5] + ")";
var banana5 = "url(" + fruit1Address + fruitCloudOne[6] + ")";
var blueberry5 = "url(" + fruit1Address + fruitCloudOne[7] + ")";
var plum5 = "url(" + fruit1Address + fruitCloudOne[8] + ")";
var strawberry5 = "url(" + fruit1Address + fruitCloudOne[9] + ")";

var apple8 = "url(" + fruit1Address + fruitCloudOne[10] + ")";
var banana8 = "url(" + fruit1Address + fruitCloudOne[11] + ")";
var blueberry8 = "url(" + fruit1Address + fruitCloudOne[12] + ")";
var plum8 = "url(" + fruit1Address + fruitCloudOne[13] + ")";
var strawberry8 = "url(" + fruit1Address + fruitCloudOne[14] + ")";



var fruitCloudTwo = new Array(15);

fruitCloudTwo[0] = '1apple.png';
fruitCloudTwo[1] = '1banana.png';
fruitCloudTwo[2] = '1blueberry.png';
fruitCloudTwo[3] = '1plum.png';
fruitCloudTwo[4] = '1strawberry.png';

fruitCloudTwo[5] = '2apple.png';
fruitCloudTwo[6] = '2banana.png';
fruitCloudTwo[7] = '2blueberry.png';
fruitCloudTwo[8] = '2plum.png';
fruitCloudTwo[9] = '2strawberry.png';

fruitCloudTwo[10] = '4apple.png';
fruitCloudTwo[11] = '4banana.png';
fruitCloudTwo[12] = '4blueberry.png';
fruitCloudTwo[13] = '4plum.png';
fruitCloudTwo[14] = '4strawberry.png';

var apple1 = "url(" + fruit2Address + fruitCloudTwo[0] + ")";
var banana1 = "url(" + fruit2Address + fruitCloudTwo[1] + ")";
var blueberry1 = "url(" + fruit2Address + fruitCloudTwo[2] + ")";
var plum1 = "url(" + fruit2Address + fruitCloudTwo[3] + ")";
var strawberry1 = "url(" + fruit2Address + fruitCloudTwo[4] + ")";

var apple2 = "url(" + fruit2Address + fruitCloudTwo[5] + ")";
var banana2 = "url(" + fruit2Address + fruitCloudTwo[6] + ")";
var blueberry2 = "url(" + fruit2Address + fruitCloudTwo[7] + ")";
var plum2 = "url(" + fruit2Address + fruitCloudTwo[8] + ")";
var strawberry2 = "url(" + fruit2Address + fruitCloudTwo[9] + ")";

var apple4 = "url(" + fruit2Address + fruitCloudTwo[10] + ")";
var banana4 = "url(" + fruit2Address + fruitCloudTwo[11] + ")";
var blueberry4 = "url(" + fruit2Address + fruitCloudTwo[12] + ")";
var plum4 = "url(" + fruit2Address + fruitCloudTwo[13] + ")";
var strawberry4 = "url(" + fruit2Address + fruitCloudTwo[14] + ")";



var fruitCloudThree = new Array(15);

fruitCloudThree[0] = '6apple.png';
fruitCloudThree[1] = '6banana.png';
fruitCloudThree[2] = '6blueberry.png';
fruitCloudThree[3] = '6plum.png';
fruitCloudThree[4] = '6strawberry.png';

fruitCloudThree[5] = '7apple.png';
fruitCloudThree[6] = '7banana.png';
fruitCloudThree[7] = '7blueberry.png';
fruitCloudThree[8] = '7plum.png';
fruitCloudThree[9] = '7strawberry.png';

fruitCloudThree[10] = '9apple.png';
fruitCloudThree[11] = '9banana.png';
fruitCloudThree[12] = '9blueberry.png';
fruitCloudThree[13] = '9plum.png';
fruitCloudThree[14] = '9strawberry.png';

var apple6 = "url(" + fruit3Address + fruitCloudThree[0] + ")";
var banana6 = "url(" + fruit3Address + fruitCloudThree[1] + ")";
var blueberry6 = "url(" + fruit3Address + fruitCloudThree[2] + ")";
var plum6 = "url(" + fruit3Address + fruitCloudThree[3] + ")";
var strawberry6 = "url(" + fruit3Address + fruitCloudThree[4] + ")";

var apple7 = "url(" + fruit3Address + fruitCloudThree[5] + ")";
var banana7 = "url(" + fruit3Address + fruitCloudThree[6] + ")";
var blueberry7 = "url(" + fruit3Address + fruitCloudThree[7] + ")";
var plum7 = "url(" + fruit3Address + fruitCloudThree[8] + ")";
var strawberry7 = "url(" + fruit3Address + fruitCloudThree[9] + ")";

var apple9 = "url(" + fruit3Address + fruitCloudThree[10] + ")";
var banana9 = "url(" + fruit3Address + fruitCloudThree[11] + ")";
var blueberry9 = "url(" + fruit3Address + fruitCloudThree[12] + ")";
var plum9 = "url(" + fruit3Address + fruitCloudThree[13] + ")";
var strawberry9 = "url(" + fruit3Address + fruitCloudThree[14] + ")";



//random generation of number and fruits & display
var numberAddress = 'Assets/Numbers/';

var fruit1Address = 'Assets/FruitCloud1/';
var randFruit1 = Math.floor(Math.random() * (fruitCloudOne.length));
var randFruit1Image = "url(" + fruit1Address + fruitCloudOne[randFruit1] + ")";

var fruit2Address = 'Assets/FruitCloud2/';
var randFruit2 = Math.floor(Math.random() * (fruitCloudTwo.length));
var randFruit2Image = "url(" + fruit2Address + fruitCloudTwo[randFruit2] + ")";

var fruit3Address = 'Assets/FruitCloud3/';
var randFruit3 = Math.floor(Math.random() * (fruitCloudThree.length));
var randFruit3Image = "url(" + fruit3Address + fruitCloudThree[randFruit3] + ")";

//refresh fruit images
function refreshFruits() {
    var fruit1Address = 'Assets/FruitCloud1/';
    var randFruit1 = Math.floor(Math.random() * (fruitCloudOne.length));
    var randFruit1Image = "url(" + fruit1Address + fruitCloudOne[randFruit1] + ")";
    document.getElementById("fruit1").style.backgroundImage = randFruit1Image;

    var fruit2Address = 'Assets/FruitCloud2/';
    var randFruit2 = Math.floor(Math.random() * (fruitCloudTwo.length));
    var randFruit2Image = "url(" + fruit2Address + fruitCloudTwo[randFruit2] + ")";
    document.getElementById("fruit2").style.backgroundImage = randFruit2Image;

    var fruit3Address = 'Assets/FruitCloud3/';
    var randFruit3 = Math.floor(Math.random() * (fruitCloudThree.length));
    var randFruit3Image = "url(" + fruit3Address + fruitCloudThree[randFruit3] + ")";
    document.getElementById("fruit3").style.backgroundImage = randFruit3Image;
}

//display number and three fruit images
function startGame() {
    var numberImage1 =  "url(" + numberAddress + myNumber[0] + ")";
    document.getElementById("number").style.backgroundImage = numberImage1;

    document.getElementById("fruit1").style.backgroundImage = randFruit1Image;

    document.getElementById("fruit2").style.backgroundImage = randFruit2Image;

    document.getElementById("fruit3").style.backgroundImage = randFruit3Image;
}


    
function dragOver(ev) {
    ev.preventDefault();
}

function dragStart(ev) {
    ev.dataTransfer.setData("fruit", ev.target.id);
}

function onDrop(ev) {
    var numberImage1 =  "url(" + numberAddress + myNumber[0] + ")";
    var apple1 = "url(" + fruit2Address + fruitCloudTwo[0] + ")";
    var banana1 = "url(" + fruit2Address + fruitCloudTwo[1] + ")";
    var blueberry1 = "url(" + fruit2Address + fruitCloudTwo[2] + ")";
    var plum1 = "url(" + fruit2Address + fruitCloudTwo[3] + ")";
    var strawberry1 = "url(" + fruit2Address + fruitCloudTwo[4] + ")";
    
    ev.preventDefault();
    if (document.getElementById("number").style.backgroundImage == numberImage1 && document.getElementById("fruit2").style.backgroundImage == apple1) {
        var data = ev.dataTransfer.getData("fruit");
        ev.target.appendChild(document.getElementById(data));
    }
    
    if (document.getElementById("number").style.backgroundImage == numberImage1 && document.getElementById("fruit2").style.backgroundImage == banana1) {
        var data = ev.dataTransfer.getData("fruit");
        ev.target.appendChild(document.getElementById(data));
    }
    
    if (document.getElementById("number").style.backgroundImage == numberImage1 && document.getElementById("fruit2").style.backgroundImage == blueberry1) {
        var data = ev.dataTransfer.getData("fruit");
        ev.target.appendChild(document.getElementById(data));
    }
    
    if (document.getElementById("number").style.backgroundImage == numberImage1 && document.getElementById("fruit2").style.backgroundImage == plum1) {
        var data = ev.dataTransfer.getData("fruit");
        ev.target.appendChild(document.getElementById(data));
    }
    
    if (document.getElementById("number").style.backgroundImage == numberImage1 && document.getElementById("fruit2").style.backgroundImage == strawberry1) {
        var data = ev.dataTransfer.getData("fruit");
        ev.target.appendChild(document.getElementById(data));
    }
}
body {
    width: 100%;
    max-width: 100%;
    margin: 0;
    overflow: hidden;
    padding: 0;
    background-color: black;
}

#background {
    position: absolute;
    background-image: url(Assets/Background_cloudPosition.png);
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    height: 100%;
    bottom: 0%;
    z-index: -10;
}

#startGame {
    position: absolute;
    left: 90px;
    width: 80px;
    height: 80px;
    background-color: green;
}

#refreshFruits {
    position: absolute;
    left: 180px;
    width: 80px;
    height: 80px;
    background-color: blue;
}

#number {
    position: absolute;
    width: 230px;
    height: 230px;
    left: 450px;
    bottom: 415px;
    background-size: contain;
    background-repeat: no-repeat;
    z-index: 15;
}

#fruitCloud1 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 460px;
    left: 135px;
    z-index: 15;
}

#fruitCloud2 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 320px;
    left: 300px;
    z-index: 15;
}

#fruitCloud3 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 185px;
    left: 110px;
    z-index: 15;
}

#fruit1 {
    position: absolute;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
}

#fruit2 {
    position: absolute;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
}

#fruit3 {
    position: absolute;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
}

#jelly {
    position: absolute;
    background-image: url(Assets/JellyMonster/JellyMonsterDefault.png);
    background-size: contain;
    background-repeat: no-repeat;
    width: 260px;
    height: 190px;
    bottom: 50px;
    right: 390px;
    z-index: 10;
}
<!DOCTYPE html>

<html>
    
<head>
    
    <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="stylesheet.css">
    <script type="text/javascript" src="script.js"></script>
    <title>This is an experiment.</title>
    
</head>
    
<body>
<!--- 
<a id="download" href="index.html"></a>--->
    
<button id="startGame" onclick="startGame()"></button>
<button id="refreshFruits" onclick="refreshFruits()"></button>

<div id="number"></div>
    
<div id="jelly" ondrop="onDrop(event)" ondragover="dragOver(event)"></div>

<div class="fruit" id="fruitCloud1">
    <div id="fruit1" draggable="true" ondragstart="dragStart(event)"></div>
</div>

<div class="fruit" id="fruitCloud2">
    <div id="fruit2" draggable="true" ondragstart="dragStart(event)"></div>
</div>
    
<div class="fruit" id="fruitCloud3">
    <div id="fruit3" draggable="true" ondragstart="dragStart(event)"></div>
</div>
    
</body>
    
</html>

英雄零

因此，使此代码起作用。

我稍微修改了if语句，结果发现其中存在类型错误。我添加了一些控制台日志语句，以便您可以看到输出。当条件匹配时，拖放操作是有效的，由于是随机生成的，因此在测试以获取拖放时，有时不得不刷新屏幕很多。这个概念很酷，开箱即用，但可能需要进行一些重构以帮助最小化代码并提高可读性。查看示例时，您将需要全屏显示该示例，因为它将此处的所有内容压缩在一起...

希望这可以帮助

var myNumber = new Array(9);

myNumber[0] = '1.png';
myNumber[1] = '2.png';
myNumber[2] = '3.png';
myNumber[3] = '4.png';
myNumber[4] = '5.png';
myNumber[5] = '6.png';
myNumber[6] = '7.png';
myNumber[7] = '8.png';
myNumber[8] = '9.png';


var fruitCloudOne = new Array(15);

fruitCloudOne[0] = '3apple.png';
fruitCloudOne[1] = '3banana.png';
fruitCloudOne[2] = '3blueberry.png';
fruitCloudOne[3] = '3plum.png';
fruitCloudOne[4] = '3strawberry.png';
fruitCloudOne[5] = '5apple.png';
fruitCloudOne[6] = '5banana.png';
fruitCloudOne[7] = '5blueberry.png';
fruitCloudOne[8] = '5plum.png';
fruitCloudOne[9] = '5strawberry.png';
fruitCloudOne[10] = '8apple.png';
fruitCloudOne[11] = '8banana.png';
fruitCloudOne[12] = '8blueberry.png';
fruitCloudOne[13] = '8plum.png';
fruitCloudOne[14] = '8strawberry.png';


var fruitCloudTwo = new Array(15);

fruitCloudTwo[0] = '1apple.png';
fruitCloudTwo[1] = '1banana.png';
fruitCloudTwo[2] = '1blueberry.png';
fruitCloudTwo[3] = '1plum.png';
fruitCloudTwo[4] = '1strawberry.png';
fruitCloudTwo[5] = '2apple.png';
fruitCloudTwo[6] = '2banana.png';
fruitCloudTwo[7] = '2blueberry.png';
fruitCloudTwo[8] = '2plum.png';
fruitCloudTwo[9] = '2strawberry.png';
fruitCloudTwo[10] = '4apple.png';
fruitCloudTwo[11] = '4banana.png';
fruitCloudTwo[12] = '4blueberry.png';
fruitCloudTwo[13] = '4plum.png';
fruitCloudTwo[14] = '4strawberry.png';


var fruitCloudThree = new Array(15);

fruitCloudThree[0] = '6apple.png';
fruitCloudThree[1] = '6banana.png';
fruitCloudThree[2] = '6blueberry.png';
fruitCloudThree[3] = '6plum.png';
fruitCloudThree[4] = '6strawberry.png';
fruitCloudThree[5] = '7apple.png';
fruitCloudThree[6] = '7banana.png';
fruitCloudThree[7] = '7blueberry.png';
fruitCloudThree[8] = '7plum.png';
fruitCloudThree[9] = '7strawberry.png';
fruitCloudThree[10] = '9apple.png';
fruitCloudThree[11] = '9banana.png';
fruitCloudThree[12] = '9blueberry.png';
fruitCloudThree[13] = '9plum.png';
fruitCloudThree[14] = '9strawberry.png';


//random generation of number and fruits & display

var numberAddress = 'Assets/Numbers/';
var numberIndex = 0;
var fruitOneIndex = 0;
var fruitTwoIndex = 0;
var fruitThreeIndex = 0;

var fruit1Address = 'Assets/FruitCloud1/';
var randFruit1 = Math.floor(Math.random() * (fruitCloudOne.length));

var fruit2Address = 'Assets/FruitCloud2/';
var randFruit2 = Math.floor(Math.random() * (fruitCloudTwo.length));

var fruit3Address = 'Assets/FruitCloud3/';
var randFruit3 = Math.floor(Math.random() * (fruitCloudThree.length));


function refreshFruits() {
  var fruit1Address = 'Assets/FruitCloud1/';
  var randFruit1 = Math.floor(Math.random() * (fruitCloudOne.length));
  document.getElementById("fruit1").style.backgroundImage = "url(" + fruit1Address + fruitCloudOne[randFruit1] + ")";

  var fruit2Address = 'Assets/FruitCloud2/';
  var randFruit2 = Math.floor(Math.random() * (fruitCloudTwo.length));
  document.getElementById("fruit2").style.backgroundImage = "url(" + fruit2Address + fruitCloudTwo[randFruit2] + ")";

  var fruit3Address = 'Assets/FruitCloud3/';
  var randFruit3 = Math.floor(Math.random() * (fruitCloudThree.length));
  document.getElementById("fruit3").style.backgroundImage = "url(" + fruit3Address + fruitCloudThree[randFruit3] + ")";
}


function startGame() {
  document.getElementById("number").style.backgroundImage = "url(" + numberAddress + myNumber[numberIndex] + ")";

  document.getElementById("fruit1").style.backgroundImage = "url(" + fruit1Address + fruitCloudOne[randFruit1] + ")";

  document.getElementById("fruit2").style.backgroundImage = "url(" + fruit2Address + fruitCloudTwo[randFruit2] + ")";

  document.getElementById("fruit3").style.backgroundImage = "url(" + fruit3Address + fruitCloudThree[randFruit3] + ")";
}



function dragOver(ev) {
  ev.preventDefault();
}

function dragStart(ev) {
  ev.dataTransfer.setData("fruit", ev.target.id);
}

//PROBLEM ARISE HERE
function onDrop(ev) {
  ev.preventDefault();
  console.log(document.getElementById("number").style.backgroundImage);
  console.log("What we are expecting to see " + document.getElementById("fruit2").style.backgroundImage );
  console.log("What we are getting " + 'url("' + fruit2Address + fruitCloudTwo[fruitTwoIndex] + '")');
  
  if (document.getElementById("number").style.backgroundImage == 'url("' + numberAddress + myNumber[numberIndex] +'")' && document.getElementById("fruit2").style.backgroundImage == 'url("' + fruit2Address + fruitCloudTwo[fruitTwoIndex] + '")') {
    var data = ev.dataTransfer.getData("fruit");
    ev.target.appendChild(document.getElementById(data));
    console.log('finally got one');
  }else{
    console.log('Try Again');
  }
}
body {
    width: 100%;
    max-width: 100%;
    margin: 0;
    overflow: hidden;
    padding: 0;
    background-color: black;
  }
  
  #background {
    position: absolute;
    background-image: url(Assets/Background_cloudPosition.png);
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    height: 100%;
    bottom: 0%;
    z-index: -10;
  }
  
  #number {
    position: absolute;
    width: 230px;
    height: 230px;
    left: 450px;
    bottom: 415px;
    background-size: contain;
    background-repeat: no-repeat;
    z-index: 15;
  }
  
  #fruitCloud1 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 460px;
    left: 135px;
    z-index: 15;
  }
  
  #fruitCloud2 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 320px;
    left: 300px;
    z-index: 15;
  }
  
  #fruitCloud3 {
    position: absolute;
    width: 240px;
    height: 120px;
    bottom: 185px;
    left: 110px;
    z-index: 15;
  }
  
  #fruit1 {
    position: absolute;
    top: 0px;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
    background-color: rosybrown;
  }
  
  #fruit2 {
    position: absolute;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
    background-color: aqua;
  }
  
  #fruit3 {
    position: absolute;
    width: 240px;
    height: 120px;
    background-size: contain;
    background-repeat: no-repeat;
  }
  
  #jelly {
    position: absolute;
    background-image: url(Assets/JellyMonster/JellyMonsterDefault.png);
    background-size: contain;
    background-repeat: no-repeat;
    width: 260px;
    height: 190px;
    bottom: 50px;
    right: 390px;
    z-index: 10;
    background-color: white;
  }
  
  #startGame {
    width: 80px;
    height: 80px;
    background-color: green;
  }
  
  #refreshFruits {
    width: 80px;
    height: 80px;
    background-color: blue;
  }
  
  
<html>

<head>

  <meta charset="UTF-8">
  <link rel="stylesheet" type="text/css" href="stylesheet.css">
  <script type="text/javascript" src="script.js"></script>
  <title>This is an experiment.</title>

</head>

<body>

  <button id="startGame" onclick="startGame()">Start</button>
  <button id="refreshFruits" onclick="refreshFruits()">Refresh</button>

  <div id="number"></div>

  <div id="jelly" ondrop="onDrop(event)" ondragover="dragOver(event)">Jelly</div>

  <div class="fruit" id="fruitCloud1">
    <div id="fruit1" draggable="true" ondragstart="dragStart(event)">Fruit 1</div>
  </div>

  <div class="fruit" id="fruitCloud2">
    <div id="fruit2" draggable="true" ondragstart="dragStart(event)">Fruit 2</div>
  </div>

  <div class="fruit" id="fruitCloud3">
    <div id="fruit3" draggable="true" ondragstart="dragStart(event)">Fruit 3</div>
  </div>

</body>

<html>

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如果语句（PDO :: FETCH_ASSOC）出现问题

如果语句和图片框值出现问题

Node Red中的Javascript Else If语句出现问题

Unix中的if语句出现问题

SQL Server select语句出现问题

while True和if语句出现问题。

Shell脚本中的if语句出现问题

VB中的If语句出现问题

Java中的if语句出现问题

java while语句出现问题？

涉及函数的switch语句出现问题

SQLite中的join语句出现问题

INSERT语句和Coldfusion出现问题

PHP代码中的if语句出现问题

JavaScript对象出现问题

JavaScript表单出现问题

javascript测量转换功能出现问题。“如果...否则，如果...否则”

如果图像出现问题，如何使JavaScript旋转一系列图像

同时，如果我的脚本出现语句问题？

javascript单击事件出现问题

CSS转换和JavaScript出现问题

凯撒密码转换javascript出现问题

javascript表单和Django出现问题

JavaScript画布擦除工具出现问题

检查多个“OR”条件时，laravel IF 语句出现问题

从列表转换为字典，foreach语句出现问题

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