所以,我有一个简单的onclick函数设置,应该改变div的背景。这是我的JS代码;
var colour = document.getElementById("backgroundColour");
function changeToColour1() {
colour.style.backgroundColor = "#47535F";
}
function changeToColour2() {
colour.style.backgroundColor = "#82A3B2";
}
这是我的HTML代码;
<button id="colour1" class="colours" onclick="changeToColour1()"></button>
<button id="colour2" class="colours" onclick="changeToColour2()"></button>
<div id="backgroundColour"></div>
单击按钮时,如何让div更改颜色?
答案 0 :(得分:1)
更简洁的方法是使用javascript为元素添加类,让CSS控制颜色。
$('#colour1').on('click',function(){
$('#backgroundColour').removeClass('colour1 colour2').addClass('colour1');
});
$('#colour2').on('click',function(){
$('#backgroundColour').removeClass('colour1 colour2').addClass('colour2');
});
并在你的CSS中放
#backgroundColour.colour1 {
background-color: #47535F;
}
#backgroundColour.colour2 {
background-color: #82A3B2;
}
答案 1 :(得分:1)
<强> HTML 强>
<button id="colour1" class="colours" data-color="#47535F" >Click me</button>
<button id="colour2" class="colours" data-color="#82A3B2">Click me</button>
<div id="backgroundColour">fff</div>
<强> JS 强>
var colourDiv = document.getElementById("backgroundColour");
var colours = document.getElementsByClassName('colours');
for(var i=0; i< colours.length; i++) {
colours[i].addEventListener('click', function() {
var color = this.getAttribute('data-color');
colourDiv.style.backgroundColor = color;
});
}
<强> Check Fiddle 强>
答案 2 :(得分:0)
首先,我建议你使用JQuery来完成你想要完成的任务,我建议你做一个简单的事实.JQuery是一个简单的javascript直接库,让我们的生活更简单,现在我完成了说这是代码。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><meta http-equiv="content-language" content="en-US" />
<title>...</title>
<style type="text/css">
html, body{
width:auto;
height:auto;
}
#changing{ /*this is the css for our javascript*/
margin:0px;
padding:0px;
width:100%;
height:100%;
position:absolute;
top:0px;
left:0px;
right:0px;
bottom:0px;
}
#wrap{ /*this is to keep the browse menu that has your buttons from disappearing below the changing div*/
margin:0px;
padding:0px;
width:100%;
height:40px;;
background-color:#000000;
border-bottom:5px solid #D8D8D8;
border-radius:0px;
position:fixed;
top:0px;
left:0px;
z-index:10;
}
#button1, #button2{
margin:0px;
padding:0px;
width:auto;
height:auto;
position:fixed;
}
#button1{
top:0px;
left:0px;
}
#button2{
top:0px;
right:0px;
}
</style>
<script rel="javascript" type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
</head>
<body>
<div id="body-container">
<div id="wrap">
<input type="button" id="button1" value="click me" />
<input type="button" id="button2" value="click me 2" />
</div>
<div id="changing">
</div>
</div>
<script>
$("#button1").click(function(){
$("#changing").css("background-color", "#47535F");//changes the color of the background to #47535F
})
$("#button2").click(function(){
$("#changing").css("background-color", "#82A3B2");//changes the color of the background to #82A3B2
})
</script>
</body>
</html>
在这段代码中我们使用内联css和javascript与JQuery库,我们首先启动文档如何通过添加DOCTYPE和我们的meta标签以及属性content-type和content-language我们也应该总是启动一个html文档添加标题。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><meta http-equiv="content-language" content="en-US" />
<title>...</title>
</head>
<body>
</body>
</html>
接下来我们添加我们的脚本来导入JQuery库,我通常使用谷歌托管版本,因为它通常启动并运行,我不必不断更新它,谷歌为你做的,你需要的唯一的东西do是在src中添加新的url来替换旧版本的JQuery。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><meta http-equiv="content-language" content="en-US" />
<title>...</title>
<script rel="javascript" type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
</head>
<body>
</body>
</html>
接下来我们添加我们的html,在我们的html中我们添加了两个按钮并将它们放在一个名为wrap的div中,并添加了我们的更改div并将更改的div和wrap div放入一个名为body-container的div中。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><meta http-equiv="content-language" content="en-US" />
<title>...</title>
<script rel="javascript" type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
</head>
<body>
<div id="body-container">
<div id="wrap">
<input type="button" id="button1" value="click me" />
<input type="button" id="button2" value="click me 2" />
</div>
<div id="changing">
</div>
</div>
</body>
</html>
现在是时候用我们的脚本和CSS添加锦上添花了,在这里我们添加了我们的CSS以确定我们制作的页面的样式,以便浏览菜单是按钮位于页面滚动并始终在脚本上,我们创建了脚本,这样如果按下按钮,它将改变div体容器的背景。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" /><meta http-equiv="content-language" content="en-US" />
<title>...</title>
<style type="text/css">
html, body{
width:auto;
height:auto;
}
#changing{ /*this is the css for our javascript*/
margin:0px;
padding:0px;
width:100%;
height:100%;
position:absolute;
top:0px;
left:0px;
right:0px;
bottom:0px;
}
#wrap{ /*this is to keep the browse menu that has your buttons from disappearing below the changing div*/
margin:0px;
padding:0px;
width:100%;
height:40px;;
background-color:#000000;
border-bottom:5px solid #D8D8D8;
border-radius:0px;
position:fixed;
top:0px;
left:0px;
z-index:10;
}
#button1, #button2{
margin:0px;
padding:0px;
width:auto;
height:auto;
position:fixed;
}
#button1{
top:0px;
left:0px;
}
#button2{
top:0px;
right:0px;
}
</style>
<script rel="javascript" type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
</head>
<body>
<div id="body-container">
<div id="wrap">
<input type="button" id="button1" value="click me" />
<input type="button" id="button2" value="click me 2" />
</div>
<div id="changing">
</div>
</div>
<script>
$("#button1").click(function(){
$("#changing").css("background-color", "#47535F");//changes the color of the background to #47535F
})
$("#button2").click(function(){
$("#changing").css("background-color", "#82A3B2");//changes the color of the background to #82A3B2
})
</script>
</body>
</html>
我希望这有帮助,因为有关JQuery的任何信息,我建议你去访问他们的在线文档,他们有很多有用的信息,这里是链接
你也可以查看w3chools他们在JQuery以及许多其他编程语言上有很多好东西,这里是链接
祝你的项目好运或学习javascript语言(=