[英]console log not showing and html isn't changing
好的，伙計們，我有問題。 出於某種原因，我的 JavaScript 文件沒有跟蹤用戶在選擇標簽中選擇一個選項時選擇“否”類的次數。 我試圖做到這一點，當用戶在下拉列表中選擇“否”時，它會跟蹤用戶選擇“否”的次數。 關於如何跟蹤用戶在 javascript 中沒有 Jquery 的情況下選擇 no 的次數有什么想法嗎？
<head>
<meta charset="utf-8" />
<meta name="quiz" content="myown quiz" />
<title>Quiz</title>
</head>
<body>
<script type="text/javascript" src="machine.js"></script>
<link rel="stylesheet" type="text/css" href="quizformatting.css">
<h1>Choose the major right for you</h1>
<pre>
<form>
Do you like enjoy programming?
<select>
<option class="choice">Select a value</option>
<option class="program">Yes</option>
<option class="no">No</option>
</select>
Do you enjoy 2d animation and 3d animation?
<select>
<option class="choice">Select a value</option>
<option class="art">Yes</option>
<option class="no">no</option>
</select>
Do you like music
<select>
<option class="choice">Select a value</option>
<option>Yes</option>
<option class="no">no</option>
</select>
What are your favorite pastimes?
<select>
<option class="choice">Select a value</option>
<option class="music">Listening to music</option>
<option class="program">making websites</option>
<option class="art">Drawing</option>
<option class="no">None of these</option>
</select>
Out of all the activities you like to do, which one do you enjoy the most?
<select>
<option class="choice">Select a value</option>
<option class="art">Painting and drawing</option>
<option class="music">Playing instruments</option>
<option class="art">Drawing</option>
<option class="no">None of these</option>
</select>
Would you be interested in making art or coding for video games?
<select>
<option class="choice">Select a value</option>
<option class="program">I would be interested in learning the programming languages used to create the scripting for games</option>
<option class="art">I would like to the models and the environment for modeling</option>
<option class="no">I'm not interested in either of these options</option>
</select>
Do you enjoy making websites or learning how to sing?
<select>
<option class="choice">Select a value</option>
<option class="music">Learning how to sing</option>
<option class="program">making websites for projects</option>
<option class="no">I'm not interested in any of this</option>
</select>
Do you enjoy listening to music more or making programming applications?
<select>
<option class="choice">Select a value</option>
<option class="music">I would like to listen to music</option>
<option class="program">Programming is my thing</option>
<option class="art">I'm more of a drawer</option>
<option class="no">I don't like any of these options</option>
</select>
Which skillset are you more interested in learning?
<select>
<option class="choice">Select a value</option>
<option class="music">Learning the notes of instruments</option>
<option class="program">Learning the language of javascript</option>
<option class="art">I like anime, so I would love to learn how to animate in anime style</option>
<option class="no">I don't want to do any of these options</option>
</select>
Please press the button to get your answer
<button type="button" onclick="Starting();">Click me</button>
</form>
</pre>
<p id="yos">Your answer here</p>
Here is my javascript code:
```javascript
function Starting() {
var artchoices = document.querySelectorAll(".art:checked");
var program = document.querySelectorAll(".program:checked");
var choice = document.querySelectorAll(".choice");
var no = document.querySelectorAll(".no:checked");
var music = document.querySelectorAll(".music:checked");
var x = document.getElementById("yos");
var answer = true;
for (var e = 0; e < choice.length; e++) {
if (choice[e].selected == true) {
answer = false;
break;
}
}
if (answer == false) {
console.log("Make sure you checked all values");
} else {
if (no == 9) {
console.log("Oh, so you don't want to become anything huh");
x.innerHTML = "HEY";
} else {
if (program > artchoices) {
console.log("Congrulations, you are an artist");
}
}
}
window.onload = Starting;
}
您需要檢查列表的長度。 節點列表（由document.querySelectorAll(".no:checked")返回的document.querySelectorAll(".no:checked") ）永遠不會等於 9。
if (no == 9)
需要是
if (no.length === 9)
控制台日志 ({value}) 與 console.log(value) 不同
[英]Console log ({value}) isn't the same as console.log(value)
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