blocks|key|1570741|text|通常，CSS属性通过不带任何破折号的camelCase转换为JavaScript。所以background-color变成了backgroundColor。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1570742|function+setColor(element,+color)
{
++++element.style.backgroundColor+=+color;
}

//+where+el+is+the+concerned+element
var+el+=+document.getElementById('elementId');
setColor(el,+'green');|code-block|syntax|javascript|1570743|entityMap^0|17|G|1Q|F|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

<p>In general, CSS properties are converted to JavaScript by making them camelCase without any dashes. So <code>background-color</code> becomes <code>backgroundColor</code>.</p>

<pre><code>function setColor(element, color)
{
    element.style.backgroundColor = color;
}

// where el is the concerned element
var el = document.getElementById('elementId');
setColor(el, 'green');
</code></pre>


blocks|key|1570826|text|如果你把所有的样式等都放在CSS中，只用JavaScript设置/取消设置类名，你可能会发现你的代码更易维护。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1570827|你的CSS显然应该是这样的：|1570828|.highlight+{
++++background:#ff00aa;
}|code-block|syntax|javascript|1570829|然后在JavaScript中：|1570830|element.className+=+element.className+===+'highlight'+?+''+:+'highlight';|1570831|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

<p>You might find your code is more maintainable if you keep all your styles, etc. in CSS and just set / unset class names in JavaScript.</p>

<p>Your CSS would obviously be something like:</p>

<pre class="lang-css prettyprint-override"><code>.highlight {
    background:#ff00aa;
}
</code></pre>

<p>Then in JavaScript:</p>

<pre><code>element.className = element.className === 'highlight' ? '' : 'highlight';
</code></pre>


blocks|key|1785659|text|var+element+=+document.getElementById('element');
element.style.background+=+'#FF00AA';|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1785660|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>var element = document.getElementById('element');
element.style.background = '#FF00AA';
</code></pre>


blocks|key|1570776|text|或者，使用一个小jQuery：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1570777|$('#fieldID').css('background-color',+'#FF6600');|code-block|syntax|javascript|1570778|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Or, using a little jQuery:</p>

<pre><code>$('#fieldID').css('background-color', '#FF6600');
</code></pre>


blocks|key|1570923|text|将此脚本元素添加到body元素：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1570924|<body>
++<script+type="text/javascript">
+++++document.body.style.backgroundColor+=+"#AAAAAA";
++</script>
</body>|code-block|syntax|javascript|1570925|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Add this script element to your body element:</p>

<pre><code>&lt;body&gt;
  &lt;script type="text/javascript"&gt;
     document.body.style.backgroundColor = "#AAAAAA";
  &lt;/script&gt;
&lt;/body&gt;
</code></pre>


blocks|key|1785996|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1785997|var+element+=+document.getElementById('element');

element.onclick+=+function()+{
++element.classList.add('backGroundColor');
++
++setTimeout(function()+{
++++element.classList.remove('backGroundColor');
++},+2000);
};|code-block|syntax|javascript|1785998|.backGroundColor+{
++++background-color:+green;
}|1785999|<div+id="element">Click+Me</div>|1786000|1786001|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|O|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|I|3|J|5|D|7|Q|8|@]|9|@]|A|$E|F]]|$1|K|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var element = document.getElementById('element');

element.onclick = function() {
  element.classList.add('backGroundColor');
  
  setTimeout(function() {
    element.classList.remove('backGroundColor');
  }, 2000);
};</code></pre>
<pre class="snippet-code-css lang-css prettyprint-override"><code>.backGroundColor {
    background-color: green;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div id="element"&gt;Click Me&lt;/div&gt;</code></pre>
</div>
</div>
</p>


blocks|key|1571098|text|你可以试试这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1571099|var+element+=+document.getElementById('element_id');
element.style.backgroundColor+=+"color+or+color_code";|code-block|syntax|javascript|1571100|举例说明。|1571101|var+element+=+document.getElementById('firstname');
element.style.backgroundColor+=+"green";//Or+#ff55ff|1571102|JSFIDDLE|offset|length|1571103|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/1rjdLno5/6/^0|0|0|0|0|0|8|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

<p>You can try this</p>

<pre><code>var element = document.getElementById('element_id');
element.style.backgroundColor = "color or color_code";
</code></pre>

<p>Example.</p>

<pre><code>var element = document.getElementById('firstname');
element.style.backgroundColor = "green";//Or #ff55ff
</code></pre>

<p><a href="http://jsfiddle.net/1rjdLno5/6/" rel="nofollow">JSFIDDLE</a></p>


blocks|key|1570944|text|亲吻回答：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1570945|document.getElementById('element').style.background+=+'#DD00DD';|code-block|syntax|javascript|1570946|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>KISS Answer:</p>

<pre><code>document.getElementById('element').style.background = '#DD00DD';
</code></pre>


blocks|key|1785961|text|您可以使用JQuery完成此操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1785962|$(".class").css("background","yellow");|code-block|syntax|javascript|1785963|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>You can do it with JQuery: </p>

<pre><code>$(".class").css("background","yellow");
</code></pre>


blocks|key|1785923|text|您可以使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1785924|<script+type="text/javascript">
++Window.body.style.backgroundColor+=+"#5a5a5a";
</script>|code-block|syntax|javascript|1785925|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>You can use:</p>
<pre><code>&lt;script type=&quot;text/javascript&quot;&gt;
  Window.body.style.backgroundColor = &quot;#5a5a5a&quot;;
&lt;/script&gt;
</code></pre>


blocks|key|1786098|text|$("body").css("background","green");+//jQuery

document.body.style.backgroundColor+=+"green";+//javascript|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1786099|有很多种方法，我想这很简单|unstyled|1786100|Demo+On+Plunker|offset|length|1786101|entityMap|0|LINK|mutability|MUTABLE|url|https://plnkr.co/edit/FEjfjG7SM10ouhvjt4AR?p=preview^0|0|0|0|F|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|T|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|F|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<pre><code>$("body").css("background","green"); //jQuery

document.body.style.backgroundColor = "green"; //javascript
</code></pre>

<p>so many ways are there I think it is very easy and simple</p>

<p><a href="https://plnkr.co/edit/FEjfjG7SM10ouhvjt4AR?p=preview" rel="nofollow noreferrer">Demo On Plunker</a></p>


blocks|key|1786171|text|$('#ID+/+.Class').css('background-color',+'#FF6600');|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1786172|通过使用jquery，我们可以针对元素的类或Id来应用css背景或任何其他样式|unstyled|1786173|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>$('#ID / .Class').css('background-color', '#FF6600');
</code></pre>

<p>By using jquery we can target the element's class or Id to apply css background or any other stylings</p>


blocks|key|1785968|text|您可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1785969|$('#elementID').css('background-color',+'#C0C0C0');|code-block|syntax|javascript|1785970|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>you can use </p>

<pre><code>$('#elementID').css('background-color', '#C0C0C0');
</code></pre>


blocks|key|1786180|text|Javascript：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1786181|document.getElementById("ID").style.background+=+"colorName";+//JS+ID

document.getElementsByClassName("ClassName")[0].style.background+=+"colorName";+//JS+Class|code-block|syntax|javascript|1786182|Jquery：|1786183|$('#ID/.className').css("background","colorName")+//+One+style

$('#ID/.className').css({"background":"colorName","color":"colorname"});+//Multiple+style|1786184|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>Javascript:</p>

<pre><code>document.getElementById("ID").style.background = "colorName"; //JS ID

document.getElementsByClassName("ClassName")[0].style.background = "colorName"; //JS Class
</code></pre>

<p>Jquery:</p>

<pre><code>$('#ID/.className').css("background","colorName") // One style

$('#ID/.className').css({"background":"colorName","color":"colorname"}); //Multiple style
</code></pre>


blocks|key|1571341|text|一个简单的js就可以解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1571342|document.getElementById("idName").style.background+=+"blue";|code-block|syntax|javascript|1571343|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>A simple js can solve this:</p>

<pre><code>document.getElementById("idName").style.background = "blue";
</code></pre>


blocks|key|1786035|text|$(".class")[0].style.background+=+"blue";|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1786036|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$(".class")[0].style.background = "blue";
</code></pre>


<p>How can I set the background color of an HTML element using css in JavaScript?</p>


How to set background color of HTML element using css properties in JavaScript

jQuery

如何在JavaScript中使用css设置HTML元素的背景色？

问如何在JavaScript中使用css属性设置HTML元素的背景色
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问如何在JavaScript中使用css属性设置HTML元素的背景色
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