我有一个关于如何在按下按钮时查看以下代码中的响应的问题。
首先，我想说我是 Javascript 新手，正在等待教授的回复。我研究了 w3schools，使用 w3schools 关键字搜索栏分解了 Javascript 中的几个不同的关键字和元素，并简短地回答了我的具体问题。我还上传到了 w3c validator.org，但没有看到太多需要解释的内容。然后我尝试使用网络浏览器中的检查选项。我在那里发现了 18 个错误，但也没有真正理解它们。尝试在 5 个不同的浏览器中查看代码，但按下按钮时没有任何反应。有任何想法吗？我的猜测是它是某种类型的语法区域，但我还不知道我在寻找什么。任何帮助，将不胜感激!谢谢。
function collectInput() {
var textbox1 =
document.getElementById('textbox'1);
// compare the value in the textbox to an empty string
if(textbox1.value == "") {
// if true, send the error message to the display point
document.getElementById('response').innerHTML
= "Hey, you didn't put anything in the box!?!";
};
};
function collectInput() {
var textbox1 =
document.getElementById('textbox1');
if(textbox1.value == "") {
document.getElementById('response').innerHTML
= "Hey, you didn't put anything in the box!?!";
} else {
document.getElementById('response').innerHTML = "You
entered: "+ textbox1.value;
};
};<body>
<div class="wrapper">
<header><h1>Header</h1></header>
<section><h1>Section</h1>
<input type="text" id="textbox1">
<input type="button" id="theButton" value="Send to the Script!" onclick="collectInput()">
<p id="response"></p><!-- the display point, the place to send the response message -->
</section>
</div>
</body>
<footer>
<p class="copy">Copyright (c) 2014 All Rights Reserved</p>
</footer> 最佳答案
首先，为什么有两个具有相同功能的脚本 collectInput 删除一个，其次有一个语法错误，已在下面的代码片段中解决，请看一下。
<!DOCTYPE html>
<html>
<head>
<title>| HTML5 CSS |</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="style.css">
<!-- There was two pieces to the instructions. The second is below, but I'm unsure as to whether the funtion requires a second script or not. Both returned negative attempts. The instructions are supposed to create a page that shows one response or the other. -->
<script type="text/javascript">
function collectInput() {
var textbox1 =
document.getElementById('textbox1');
if(textbox1.value == "") {
document.getElementById('response').innerHTML
= "Hey, you didn't put anything in the box!?!";
} else {
document.getElementById('response').innerHTML = "You entered: "+ textbox1.value;
}
}
</script>
</head>
<body>
<div class="wrapper">
<header><h1>Header</h1></header>
<section><h1>Section</h1>
<input type="text" id="textbox1">
<input type="button" id="theButton" value="Send to the Script!" onclick="collectInput()">
<p id="response"></p><!-- the display point, the place to send the response message -->
</section>
</div>
</body>
<footer>
<p class="copy">Copyright (c) 2014 All Rights Reserved</p>
</footer>
</html>关于javascript - 按钮未触发响应，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41822155/