[英]How to dynamically change CSS style?
我有简单的元素:
<a id="a1" href="#" style="position:absolute; top:0; left:0; nav-index:1; nav-down:#b1; nav-right:#a3; nav-left:#a1; nav-up:#a1">A1</a>
如何仅动态更改nav-index
和nav-up
?
像这样:
var a1 = document.getElementById('a1');
a1.style['nav-index'] = /* somevalue */;
a1.style['nav-up'] = /* somevalue */;
// or (style properties with hypens must be converted
// to a camel case representation for use in 'dot notation')
a1.style.navIndex = /* somevalue */;
a1.style.navUp = /* somevalue */;
// and to retrieve the original values:
a1.style['nav-index'] = '';
a1.style['nav-up'] = '';
此外,建议将内联样式移动到 css 文件中的类。
.a1nav {
position:absolute;
top:0;
left:0;
nav-index:1;
nav-down:#b1;
nav-right:#a3;
nav-left:#a1;
nav-up:#a1;
}
创建一个新的 css 并像这样调用它们
function changeClass (elementID, newClass) {
var element = document.getElementById(elementID);
element.setAttribute("class", newClass); //For Most Browsers
element.setAttribute("className", newClass); //For IE; harmless to other browsers.
}
您可以使用 jquery 更改导航索引和导航向上。
$('a#a1').attr('nav-index', '2'); //If you want to change it to 2.
$('a#a1').attr('nav-up', '#5'); //If you want to change it to #5.
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