编完代码不起作用
为啥写出来按那些按钮不起作用呢
为啥写出来按那些按钮不起作用呢
2016-01-24
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | 很多原因,可能是没加入事件,可能是某个地方写错了,贴代码给你参考一下 <!DOCTYPE HTML> < html > < head > < meta http-equiv = "Content-Type" Content = "text/html; charset=utf-8" /> < title >javascript</ title > < style type = "text/css" > body{font-size:12px;} #txt{ height:400px; width:600px; border:#333 solid 1px; padding:5px;} p{ line-height:18px; text-indent:2em;} </ style > </ head > < body > < h2 id = "con" >JavaScript课程</ H2 > < div id = "txt" > < h5 >JavaScript为网页添加动态效果并实现与用户交互的功能。</ h5 > < p >1. JavaScript入门篇,让不懂JS的你,快速了解JS。</ p > < p >2. JavaScript进阶篇,让你掌握JS的基础语法、函数、数组、事件、内置对象、BOM浏览器、DOM操作。</ p > < p >3. 学完以上两门基础课后,在深入学习JavaScript的变量作用域、事件、对象、运动、cookie、正则表达式、ajax等课程。</ p > </ div > < form > < input type = "button" value = "改变颜色" onClick = "dcolor()" > < input type = "button" value = "改变宽高" onClick = "dwh()" > < input type = "button" value = "隐藏内容" onClick = "dh()" > < input type = "button" value = "显示内容" onClick = "ds()" > < input type = "button" value = "取消设置" onClick = "dclear()" > </ form > < script type = "text/javascript" > function dcolor(){ var mychar = document.getElementById("txt"); mychar.style.color="red"; mychar.style.backgroundColor="#ccc"; } function dwh(){ var mychar = document.getElementById("txt"); mychar.style.width="400px"; mychar.style.height="200px"; } function dh(){ var mychar = document.getElementById("txt"); mychar.style.display="none"; } function dclear(){ if(confirm("确认是否取消设置悧?")){ var mychar = document.getElementById("txt"); mychar.style.color="#000"; mychar.style.backgroundColor="#fff"; mychar.style.width="600px"; mychar.style.height="400px"; mychar.style.display="block"; } } function ds(){ var mychar = document.getElementById("txt"); mychar.style.display="block"; } </ script > </ body > </ html > |
很多原因,可能是没加入时间,可能是某个地方写错了,贴代码给你参考一下
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" Content="text/html; charset=utf-8" />
<title>javascript</title>
<style type="text/css">
body{font-size:12px;}
#txt{
height:400px;
width:600px;
border:#333 solid 1px;
padding:5px;}
p{
line-height:18px;
text-indent:2em;}
</style>
</head>
<body>
<h2 id="con">JavaScript课程</H2>
<div id="txt">
<h5>JavaScript为网页添加动态效果并实现与用户交互的功能。</h5>
<p>1. JavaScript入门篇,让不懂JS的你,快速了解JS。</p>
<p>2. JavaScript进阶篇,让你掌握JS的基础语法、函数、数组、事件、内置对象、BOM浏览器、DOM操作。</p>
<p>3. 学完以上两门基础课后,在深入学习JavaScript的变量作用域、事件、对象、运动、cookie、正则表达式、ajax等课程。</p>
</div>
<form>
<input type="button" value="改变颜色" onClick="dcolor()">
<input type="button" value="改变宽高" onClick="dwh()">
<input type="button" value="隐藏内容" onClick="dh()">
<input type="button" value="显示内容" onClick="ds()">
<input type="button" value="取消设置" onClick="dclear()">
</form>
<script type="text/javascript">
function dcolor(){
var mychar = document.getElementById("txt");
mychar.style.color="red";
mychar.style.backgroundColor="#ccc";
}
function dwh(){
var mychar = document.getElementById("txt");
mychar.style.width="400px";
mychar.style.height="200px";
}
function dh(){
var mychar = document.getElementById("txt");
mychar.style.display="none";
}
function dclear(){
if(confirm("确认是否取消设置悧?")){
var mychar = document.getElementById("txt");
mychar.style.color="#000";
mychar.style.backgroundColor="#fff";
mychar.style.width="600px";
mychar.style.height="400px";
mychar.style.display="block";
}
}
function ds(){
var mychar = document.getElementById("txt");
mychar.style.display="block";
}
</script>
1 | < br > |
</body>
</html>
1 | < br > |
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