我正在为我的经济课做这个测验。我选择在java脚本中执行此操作。在我的脚本运行后，页面刷新。该页面应该改变输入标签背景的颜色。我究竟做错了什么？第一个变量块收集信息，第二个变量设置为小写。该代码在html文件中正常工作，但我希望它是一个外部javascript。
编辑：我做了西蒙所说的，通过从我的js中删除[return false;]并将我的onclick更改为[onclick =“return checkAnswers（）;”]，但我仍然遇到同样的问题。 编辑：我做了Duncan所说的，现在效果很好，谢谢！HTML：
<!DOCTYPE html />
<html>
<head>
<title>Chapter 2</title>
<style type="text/css">
input{
width:150px;
border:none;
border-bottom:solid 1px #C0C0C0;
text-align:center;
}
h1, h3, body{
text-align:center;
}
div{
border:double 3px #C0C0C0;
margin:5px;
padding:10px;
border-radius:5%;
text-align:left;
}
a:link, a:visited{
color:#0000FF;
}
a:hover{
color:#CC00FF;
font-size:1.5em;
}
#sect2def2{
width:200px;
}
</style>
<script type="text/javascript" src="javascript\script.js"></script>
</head>
<body>
<h1>Chapter 3</h1>
<form>
<a name="notes"></a><h3>Notes</h3>
<div id="section1">
<h3>Section 1</h3>
<input type="text" id="sect1def1"></input> is another name for capitalism, an economic system based on private ownership of productive resources.
<br />
<input type="text" id="sect1def2"></input> is the ability of everyone to take part in the market by free choice.
<br />
<input type="text" id="sect1def3"></input> is a situation in which everyone has the same economic rights under the law.
<br />
A <input type="text" id="sect1def4"></input> is a situation in which people decide which legal agreements to enter into.
<br />
The <input type="text" id="sect1def5"></input> is the force that encourages people and organizations to improve their material well being from economic activities.
</div>
<div id="section 2">
<h3>Section 2</h3>
<input type="text" id="sect2def1"></input> is the money left over after the costs of producing a good or service have been subtracted from the revenue gained by selling that good or service.
<br />
A <input type="text" id="sect2def2"></input> is a free enterprise economic system with some government involvement.
</div>
<div id="section 3">
<h3>Section 3</h3>
<input type="text" id="sect3def1"></input> occurs when people who are not part of a marketplace interaction benefit from it or pay part of its costs.
<br />
<input type="text" id="sect3def2"></input> are products provided by federal, state, and local governments and consumed by the public as a group.
<br />
A <input type="text" id="sect3def3"></input> is a person who avoids paying for a good or service but who benefits from that good or service anyway.
<br />
The <input type="text" id="sect3def4"></input> consists of all the goods and services that are necessary for the functioning of society.
<br />
An <input type="text" id="sect3def5"></input> is a side effect of a product that affects someone other than the producer or the buyer.
<br />
A <input type="text" id="sect3def6"></input> is an externality that imposes costs on people who were not involved in the original economic activity.
<br />
A <input type="text" id="sect3def7"></input> is an externality that creates benefits for people who were not involved in the original economic activity.
<br />
A <input type="text" id="sect3def8"></input> is a government payment that helps cover the cost of an economic activity that has the potential to benefit the public as a whole.
<br />
The <input type="text" id="sect3def9"></input> consists of government programs designed to protect people from economic hardships.
<br />
<input type="text" id="sect3def10"></input> are transfers of income from one person or group to another even though the receiver does not provide anything in return.
<br />
A <input type="text" id="sect3def11"></input> is a transfer payment in which the government transfers income from taxpayers to recipients who do not provide anything in return.
</div>
<button id="notesButton" onclick="checkAnswers();">Submit</button>
</form>
</body>
</html>
JavaScript的：
function checkAnswers() {
var s1d1 = document.getElementById("sect1def1").value;
var s1d2 = document.getElementById("sect1def2").value;
var s1d3 = document.getElementById("sect1def3").value;
var s1d4 = document.getElementById("sect1def4").value;
var s1d5 = document.getElementById("sect1def5").value;
var s2d1 = document.getElementById("sect2def1").value;
var s2d2 = document.getElementById("sect2def2").value;
var s3d1 = document.getElementById("sect3def1").value;
var s3d2 = document.getElementById("sect3def2").value;
var s3d3 = document.getElementById("sect3def3").value;
var s3d4 = document.getElementById("sect3def4").value;
var s3d5 = document.getElementById("sect3def5").value;
var s3d6 = document.getElementById("sect3def6").value;
var s3d7 = document.getElementById("sect3def7").value;
var s3d8 = document.getElementById("sect3def8").value;
var s3d9 = document.getElementById("sect3def9").value;
var s3d10 = document.getElementById("sect3def10").value;
var s3d11 = document.getElementById("sect3def11").value;
var s1d1L = s1d1.toLowerCase();
var s1d2L = s1d2.toLowerCase();
var s1d3L = s1d3.toLowerCase();
var s1d4L = s1d4.toLowerCase();
var s1d5L = s1d5.toLowerCase();
var s2d1L = s2d1.toLowerCase();
var s2d2L = s2d2.toLowerCase();
var s3d1L = s3d1.toLowerCase();
var s3d2L = s3d2.toLowerCase();
var s3d3L = s3d3.toLowerCase();
var s3d4L = s3d4.toLowerCase();
var s3d5L = s3d5.toLowerCase();
var s3d6L = s3d6.toLowerCase();
var s3d7L = s3d7.toLowerCase();
var s3d8L = s3d8.toLowerCase();
var s3d9L = s3d9.toLowerCase();
var s3d10L = s3d10.toLowerCase();
var s3d11L = s3d11.toLowerCase();
if (s1d1L=="free enterprise system"){
document.getElementById("sect1def1").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect1def1").style.backgroundColor = "#FF0000";
}
if (s1d2L=="open opportunity"){
document.getElementById("sect1def2").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect1def2").style.backgroundColor = "#FF0000";
}
if (s1d3L=="legal equality"){
document.getElementById("sect1def3").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect1def3").style.backgroundColor = "#FF0000";
}
if (s1d4L=="free contract"){
document.getElementById("sect1def4").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect1def4").style.backgroundColor = "#FF0000";
}
if (s1d5L=="profit motive"){
document.getElementById("sect1def5").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect1def5").style.backgroundColor = "#FF0000";
}
if (s2d1L=="profit"){
document.getElementById("sect2def1").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect2def1").style.backgroundColor = "#FF0000";
}
if (s2d2L=="modified free enterprise economy"){
document.getElementById("sect2def2").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect2def2").style.backgroundColor = "#FF0000";
}
if (s3d1L=="market failure"){
document.getElementById("sect3def1").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def1").style.backgroundColor = "#FF0000";
}
if (s3d2L=="public goods"){
document.getElementById("sect3def2").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def2").style.backgroundColor = "#FF0000";
}
if (s3d3L=="free rider"){
document.getElementById("sect3def3").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def3").style.backgroundColor = "#FF0000";
}
if (s3d4L=="infrastructure"){
document.getElementById("sect3def4").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def4").style.backgroundColor = "#FF0000";
}
if (s3d5L=="externality"){
document.getElementById("sect3def5").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def5").style.backgroundColor = "#FF0000";
}
if (s3d6L=="negative externality"){
document.getElementById("sect3def6").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def6").style.backgroundColor = "#FF0000";
}
if (s3d7L=="positive externality"){
document.getElementById("sect3def7").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def7").style.backgroundColor = "#FF0000";
}
if (s3d8L=="subsidy"){
document.getElementById("sect3def8").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def8").style.backgroundColor = "#FF0000";
}
if (s3d9L=="safety net"){
document.getElementById("sect3def9").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def9").style.backgroundColor = "#FF0000";
}
if (s3d10L=="transfer payments"){
document.getElementById("sect3def10").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def10").style.backgroundColor = "#FF0000";
}
if (s3d11L=="public transfer payment"){
document.getElementById("sect3def11").style.backgroundColor = "#00FF00";
} else {
document.getElementById("sect3def11").style.backgroundColor = "#FF0000";
}
return false;
}
答案 0 :(得分：2)
你不会在你的onclick处理程序中返回false（你只是在你的函数中这样做）。这样的事可能没问题：
<button id="notesButton" onclick="return checkAnswers();">Submit</button>
编辑：将函数绑定到表单上的提示更好，以防有人使用键盘提交表单而不使用按钮。