knockout.js 的CSS
示例
此绑定会将提供的CSS类应用于该元素。当将给定条件宽松地评估为true时，将应用静态类。动态类使用可观察或计算的值。
page.html
<p data-bind="css: { danger: isInDanger }">Checks external expression</p>
<p data-bind="css: { danger: dangerLevel() > 10 }">Expression can be inline</p>
<p data-bind="css: { danger: isInDanger, glow: shouldGlow }">Multiple classes</p>
<p data-bind="css: dynamicObservable">Dynamic CSS class from observable</p>
<p data-bind="css: dynamicComputed">Dynamic CSS class from computed</p>page.js
ko.applyBindings({
isInDanger: ko.observable(true),
dangerLevel: ko.observable(5),
isHot: ko.observable(true),
shouldGlow: ko.observable(true),
dynamicObservable: ko.observable('highlighted'),
dynamicComputed: ko.computed(function() {
var customClass = "";
if(dangerLevel() >= 15 ) {
customClass += " danger";
}
if(dangerLevel() >= 10) {
customClass += " glow";
}
if(dangerLevel() >= 5) {
customClass += " highlighted";
}
return customClass;
});
});page.css
.danger { background: red; }
.glow { box-shadow: 5px 5px 5px gold; }
.highlighted { color: purple; }另请参阅：官方文档。