[英]Radio button not changing background color HTML/CSS
I'm trying to change the background color using radio buttons. 我正在尝试使用单选按钮更改背景颜色。 The javascript function seems to not be working.
javascript函数似乎无法正常工作。 I already read through the other questions written here, none of those answers seemed to work.
我已经读完了这里写的其他问题,这些答案似乎都没有用。
Here's the HTML code: 这是HTML代码:
<form action="">
<input type="radio" name="color" value="radio" onchange= "bgColor('colorR')">Red
<input type="radio" name="color" value="radio" onchange= "bgColor('colorG')"> Green
<input type="radio" name="color" value="radio" onchange= "bgColor('colorP')"> Purple
<input type="radio" name="color" value="radio" onchange= "bgColor('colorD')"> Default
</form>
Here's the Javascript: 这是Javascript:
<script>
function bgColor(col){
switch(col){
case 'colorR':
document.body.style.backgroundColor = "red";
break;
case 'colorG':
document.body.style.backgroundColor = "green";
break;
case 'colorP'
document.body.style.backgroundColor = "purple";
break;
case 'colorD'
document.body.style.backgroundColor = "#d0e4fe";
break;
}
}
</script>
Here's the CSS code for when the page first launches: 以下是页面首次启动时的CSS代码:
body {
background-color: #d0e4fe;
}
Your code is not working because your function name is bgColor
i have renamed it to bgcolor
and you also missing semi-colon after case 'colorP'
and case 'colorD'
and now its working fine. 您的代码无法正常工作,因为您的函数名称为
bgColor
我将其重命名为bgcolor
并且在case 'colorP'
和case 'colorD'
之后也缺少分号,并且现在可以正常使用了。 Try this 尝试这个
<form action="">
<input type="radio" name="color" value="radio" onchange= "bgcolor('colorR')"> Red
<input type="radio" name="color" value="radio" onchange= "bgcolor('colorG')"> Green
<input type="radio" name="color" value="radio" onchange= "bgcolor('colorP')"> Purple
<input type="radio" name="color" value="radio" onchange= "bgcolor('colorD')"> Default
</form>
JavaScript function JavaScript功能
<script>
function bgcolor(col){
switch(col){
case 'colorR':
document.body.style.backgroundColor = "red";
break;
case 'colorG':
document.body.style.backgroundColor = "green";
break;
case 'colorP' :
document.body.style.backgroundColor = "purple";
break;
case 'colorD':
document.body.style.backgroundColor = "#d0e4fe";
break;
}
};
</script>
and css 和CSS
body {
background-color: #d0e4fe;
}
$('input:radio').click(function() { var color = $(this).val(); $('body').css("background-color", color); });
body { background-color: #d0e4fe; }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <form action=""> <input type="radio" name="color" value="red">Red <input type="radio" name="color" value="green">Green <input type="radio" name="color" value="purple">Purple <input type="radio" name="color" value="#d0e4fe">Default </form>
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