如何使我的网站更有效率？
如何使我的网站更有效率？
提问于 2021-01-24 02:00:42
我有一个JavaScript文件在我的网站上，采取每一个字，并突出他们各自。有没有办法把它变成一条线而不是所有的单行呢？
JavaScript：
var input = document.getElementById("boch");
input.addEventListener("keyup", function (event) {
if (event.keyCode === 13) {
event.preventDefault();
document.getElementById("bocho").click();
}
});
var element = document.querySelector("#boch");
var start;
element.onkeyup = function () {
var value = element.value;
if (value === "m") {
start = Date.now();
}
if (value.includes("man")) {
document.getElementById('word-1').style.backgroundColor = 'green';
} else {
document.getElementById('word-1').style.backgroundColor = "red";
}
if (value.includes("man become")) {
document.getElementById('word-2').style.backgroundColor = 'green';
} else {
document.getElementById('word-2').style.backgroundColor = "red";
}
if (value.includes("man become as")) {
document.getElementById('word-3').style.backgroundColor = 'green';
} else {
document.getElementById('word-3').style.backgroundColor = "red";
}
if (value.includes("man become as and")) {
document.getElementById('word-4').style.backgroundColor = 'green';
} else {
document.getElementById('word-4').style.backgroundColor = "red";
}
if (value.includes("man become as and through")) {
document.getElementById('word-5').style.backgroundColor = 'green';
} else {
document.getElementById('word-5').style.backgroundColor = "red";
}
if (value.includes("man become as and through find")) {
document.getElementById('word-6').style.backgroundColor = 'green';
} else {
document.getElementById('word-6').style.backgroundColor = "red";
}
if (value.includes("man become as and through find would")) {
document.getElementById('word-7').style.backgroundColor = 'green';
} else {
document.getElementById('word-7').style.backgroundColor = "red";
}
if (value.includes("man become as and through find would here")) {
document.getElementById('word-8').style.backgroundColor = 'green';
} else {
document.getElementById('word-8').style.backgroundColor = "red";
}
if (value.includes("man become as and through find would here and")) {
document.getElementById('word-9').style.backgroundColor = 'green';
} else {
document.getElementById('word-9').style.backgroundColor = "red";
}
if (value.includes("man become as and through find would here and before")) {
document.getElementById('word-10').style.backgroundColor = 'green';
} else {
document.getElementById('word-10').style.backgroundColor = "red";
}
var end;
if (value === "man become as and through find would here and before") {
end = Date.now();
}
let millis = end - start;
if (isNaN(millis)) {
return " ";
}
console.log(millis)
var seconds = millis / 1000;
var min = seconds / 60;
var wpm1 = ((52/5)/min)
console.log(wpm1)
var wpm = Math.round(wpm1);
console.log(wpm)
document.getElementById("bd").innerHTML = wpm;
}HTML：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>repl.it</title>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<h1>
<span id="word-1">man</span> <span id="word-2">become</span> <span id="word-3">as</span>
<span id="word-4">and</span> <span id="word-5">through</span> <span id="word-6">find</span> <span id="word-7">would</span> <span id="word-8">here</span> <span id="word-9">and</span> <span id="word-10">before</span>
</h1>
<input type="text" id="boch" autocomplete="off" onselectstart="return false" onpaste="return false;" onCopy="return false" onCut="return false" onDrag="return false" onDrop="return false">
</div>
<div id="typing-area">
<button id="bocho" onclick="document.getElementById('boch').value = ''">Enter</button>
</html>
<h1 id="bd">WPM</h1>
<script src="main.js"></script>回答 2
Stack Overflow用户
回答已采纳
发布于 2021-01-24 18:34:05
对于这个解决方案，我只使用两个跨度，一个用于绿色部分，一个用于红色文本。然后，我循环遍历通过使用输入的文本，找出文本出错的点。然后，我将答案中的所有文本移到绿色跨度中，其余的将被保留在红色跨度中(这就是切片所做的)。下面是一个工作示例：
HTML:
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>test</title>
</head>
<h1></h1><span id="span1" style="background-color: green;"></span><span id="span2" style="background-color: red;">man become as and through find would here and before</span></h1>
<br>
<input type="text" id="boch" >
<script src="js.js"></script>
</html>JavaScript
var element = document.querySelector("#boch");
var span1 = document.getElementById("span1");
var span2 = document.getElementById("span2");
element.onkeyup = function () {
var value = element.value;
var text = span1.innerText + span2.innerText;
if (value === text) {
span2.innerText = "";
span1.innerText = text;
} else {
for (var i = 0; i < value.length; i++) {
if (text.charAt(i) !== value.charAt(i)) {
break;
}
}
span1.innerText = text.slice(0, i);
span2.innerText = text.slice(i, text.length);
}
};或者你可以看到它在这里起作用：https://jsfiddle.net/8des04y5/
Stack Overflow用户
发布于 2021-01-24 13:55:21
我想说的是，第一个技巧是在变量中存储您正在多个地方使用的代码块。这是枯燥的原则，不要重复。例如：
if (value.includes("man")) {
document.getElementById('word-1').style.backgroundColor = 'green';
} else {
document.getElementById('word-1').style.backgroundColor = "red";
}并使用此变量替换相同的代码：
const word1 = document.getElementById('word-1')；
if (value.includes("man")) {
word1.style.backgroundColor = 'green';
} else {
word1.style.backgroundColor = "red";
}对您将多次使用的每一段代码都执行此操作。当然，这只是一个例子，您可以做得更好，因为您有很多重复的代码。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65866483
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