blocks|key|4063526|text|有一些地方是不正确的，但总体而言，你的代码几乎是正确的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4063527|首先，您要查找的“innerText”实际上是“innerText”。|4063528|其次，输入元素没有innerText。相反，它们有一个属性'value‘。|4063529|第三，要包含javascript，您应该使用script标记而不是link标记。|4063530|此外，我更改了函数的绑定，并在javascript中使用.addEventListener("click"，...)而不是在HTML中。但这是相当多的偏好。大多数情况下，它会导致较少的错误，因为如果脚本根本没有加载，它就不会尝试找到指定的函数。|4063531|HTML|4063532|<!DOCTYPE+html>
<html+lang="en"+dir="ltr">
++++<head>
++++++++<meta+charset="utf-8">
++++++++<title>My+Webpage!</title>
++++</head>
++++<body>
++++++++ 
++++++++<input+type="text"+name="inputField"+id="answer"+placeholder="Enter+the+answer..."+required>
++++++++<button+id="submit"+type="button"+name="button">Submit</button>
++++++++<p+id="demo">
++++++++<script+type="text/javascript"+src="./script.js">
++++</body>
</html>|code-block|syntax|javascript|4063533|脚本|4063534|function+getInput()+{
++++return+document.getElementById("answer").value;
}

var+submitButton+=+document.getElementById("submit").addEventListener("click",+mySubmit);

function+mySubmit()+{
++++var+text;
++++var+database+=+[
++++++++{answer:+"Apple",+clue:+"Steve+Jobs"},
++++++++{answer:+"Mango",+clue:+"Fruit"}
++++];
++++for(var+i=0;i<database.length;i%2B%2B){
++++++++if(database[i].answer+===+getInput()){
++++++++++++text+=+database[i].clue;
++++++++++++console.log(text);
++++++++}
++++}

++++if(!text)+{
++++++++text+=+"The+answer+is+incorrect";
++++}

++++document.getElementById("demo").innerText+=+text;
}|4063535|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|12|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|N|7|14|8|@]|9|@]|A|$O|P]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

There were a few things that weren't correct but overall your code was almost there.

First of all the 'innertext' you were looking for is actually 'innerText'. 
Secondly, input elements don't have an innerText. They have an attribute 'value' instead. 
Thirdly, to include javascript you'd use a script tag instead of a link tag.

Furthermore, I changed the binding of your function and did that in javascript using .addEventListener("click", ...) instead of in your HTML. But this is pretty much preference. Most of the time it will cause fewer errors though since if the script isn't loaded at all it won't try to find the specified function.

HTML

<pre><code>&lt;!DOCTYPE html&gt;
&lt;html lang="en" dir="ltr"&gt;
 &lt;head&gt;
 &lt;meta charset="utf-8"&gt;
 &lt;title&gt;My Webpage!&lt;/title&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;
 &lt;input type="text" name="inputField" id="answer" placeholder="Enter the answer..." required&gt;
 &lt;button id="submit" type="button" name="button"&gt;Submit&lt;/button&gt;
 &lt;p id="demo"&gt;&lt;/p&gt;
 &lt;script type="text/javascript" src="./script.js"&gt;
 &lt;/body&gt;
&lt;/html&gt;
</code></pre>

Script

<pre><code>function getInput() {
 return document.getElementById("answer").value;
}

var submitButton = document.getElementById("submit").addEventListener("click", mySubmit);

function mySubmit() {
 var text;
 var database = [
 {answer: "Apple", clue: "Steve Jobs"},
 {answer: "Mango", clue: "Fruit"}
 ];
 for(var i=0;i&lt;database.length;i++){
 if(database[i].answer === getInput()){
 text = database[i].clue;
 console.log(text);
 }
 }

 if(!text) {
 text = "The answer is incorrect";
 }

 document.getElementById("demo").innerText = text;
}
</code></pre>

I just started with JavaScript and want to build a HTML page which accepts the input and the JavaScript takes the input from HTML and searches the database array and displays the specific output for each input.
Heres's the HTML :

<pre><code>&lt;!DOCTYPE html&gt;
&lt;html lang="en" dir="ltr"&gt;
 &lt;head&gt;
 &lt;meta charset="utf-8"&gt;
 &lt;title&gt;My Webpage!&lt;/title&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;
 &lt;input type="text" name="inputField" id="answer" placeholder="Enter the answer..." required&gt;
 &lt;button type="button" name="button" onclick="mySubmit()"&gt;Submit&lt;/button&gt;
 &lt;p id="demo"&gt;&lt;/p&gt;
 &lt;link href'./script.js"&gt;

&lt;/body&gt;
&lt;/html&gt;
</code></pre>

Here's the JavaScript : 

<pre><code>var getInput = document.getElementById("answer").innertext;
console.log(getInput);
function mySubmit() {
 var text;
 var database = [
 {answer: "Apple", clue: "Steve Jobs"},
 {answer: "Mango", clue: "Fruit"}
 ];
 for(var i=0;i&lt;database.length;i++){
 if(database[i].answer === getInput){
 text = database[i].clue;
 console.log(text);
 }
 else{
 text = "The answer is incorrect";
 console.log(text);
 }
 document.getElementById("demo").innertext = text;
 }
}
</code></pre>

The code should do as, if asks for user input e.g. Apple and give output on HTML as "Steve Jobs".

To display specific output for an input (from HTML) using Javascript

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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