Javascript 单击时更改 CSS 属性

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时间:2020-08-24 16:21:50  来源:igfitidea点击:

Change CSS properties on click

javascriptjquerycssjquery-uionclick

提问by mobi001

I am trying to change the CSS of one element on click of another element. I've searched a lot but nothing works perfectly. Currently I am using the below code, but it doesn't work. Can anyone tell me what I missed?

我试图在单击另一个元素时更改一个元素的 CSS。我已经搜索了很多,但没有什么是完美的。目前我正在使用下面的代码,但它不起作用。谁能告诉我我错过了什么?

<div id="foo">hello world!</div>
<img src="zoom.png" onclick="myFunction()" />
function myFunction() {
    document.getElementById('foo').style.cssText = 'background-color: red; color: white; font-size: 44px';
}

回答by Rory McCrossan

Firstly, using on*attributes to add event handlers is a very outdated way of achieving what you want. As you've tagged your question with jQuery, here's a jQuery implementation:

首先,使用on*属性来添加事件处理程序是一种非常过时的实现你想要的方式。当您使用 jQuery 标记您的问题时,这是一个 jQuery 实现:

<div id="foo">hello world!</div>
<img src="zoom.png" id="image" />
$('#image').click(function() {
    $('#foo').css({
        'background-color': 'red',
        'color': 'white',
        'font-size': '44px'
    });
});

A more efficient method is to put those styles into a class, and then add that class onclick, like this:

一种更有效的方法是将这些样式放入一个类中,然后在单击时添加该类,如下所示:

$('#image').click(function() {
  $('#foo').addClass('myClass');
});
.myClass {
  background-color: red;
  color: white;
  font-size: 44px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div id="foo">hello world!</div>
<img src="https://i.imgur.com/9zbkKVz.png?1" id="image" />

回答by ATOzTOA

Try this:

尝试这个:

CSS

CSS

.style1{
    background-color:red;
    color:white;
    font-size:44px;
}

HTML

HTML

<div id="foo">hello world!</div>
<img src="zoom.png" onclick="myFunction()" />

Javascript

Javascript

function myFunction()
{
    document.getElementById('foo').setAttribute("class", "style1");
}

回答by Kirandeep Singh

    <script>
        function change_css(){
            document.getElementById('result').style.cssText = 'padding:20px; background-color:#b2b2ff; color:#0c0800; border:1px solid #0c0800; font-size:22px;';
        }
    </script>

</head>

<body>
    <center>
        <div id="error"></div>
        <center>
            <div id="result"><h2> Javascript Example On click Change Css style</h2></div>
            <button onclick="change_css();">Check</button><br />
        </center>
    </center>
</body>

回答by Elwi

In your code you aren't using jquery, so, if you want to use it, yo need something like...

在你的代码中你没有使用 jquery,所以,如果你想使用它,你需要像......

$('#foo').css({'background-color' : 'red', 'color' : 'white', 'font-size' : '44px'});

http://api.jquery.com/css/

http://api.jquery.com/css/

Other way, if you are not using jquery, you need to do ...

其他方式,如果您不使用 jquery,则需要执行...

document.getElementById('foo').style = 'background-color: red; color: white; font-size: 44px';

回答by Mustafa Shujaie

With jquery you can do it like:

使用 jquery,您可以这样做:

$('img').click(function(){
    $('#foo').css('background-color', 'red').css('color', 'white');
});

this applies for all imgtags you should set an idattribute for it like imageand then:

这适用于所有img标签,您应该id为它设置一个属性image,然后:

$('#image').click(function(){
    $('#foo').css('background-color', 'red').css('color', 'white');
});

回答by Barry Kaye

Try this:

尝试这个:

$('#foo').css({backgroundColor:'red', color:'white',fontSize:'44px'});

回答by Mihai Matei

<div id="foo">hello world!</div>
<img src="zoom.png" id="click_me" />

JS

JS

$('#click_me').click(function(){
  $('#foo').css({
    'background-color':'red',
    'color':'white',
    'font-size':'44px'
  });
});

回答by rmhartog

This code seems to work fine (see this jsfiddle). Is your javascript defined beforeyour body? When the browser reads onclick="myFunction()"it has to know what myFunctionis.

这段代码似乎工作正常(见这个jsfiddle)。你的 javascript 是你的身体之前定义的吗?当浏览器读取时,onclick="myFunction()"它必须知道是什么myFunction