在HTML中的一个对象应用多个 class 名称
下面的例子展示了你如何应用多个CSS class名称给一个HTML对象。通过在HTML中设置class属性，或者在JavaScript设置className 属性。<!DOCTYPE html><html><head> <title>Applying multiple class names to an object in HTML</title> <style type="text/css"> .sty1 { font-size: 2em; } .sty2 { color: #f00; } </style></head><body> <div class="sty1">Big</div> <div class="sty2">Red</div> <div class="sty1 sty2">Big and red</div> </body></html><!DOCTYPE html><html><head> <title>Applying multiple class names to an object in HTML</title> <style type="text/css"> .sty1 { font-size: 2em; } .sty2 { color: #f00; } </style></head><body > <div id="div1">Big</div> <div id="div2">Red</div> <div id="div3">Big and red</div> <script type="text/javascript"> function init() { document.get document.getElementById("div1").className = "sty1"; document.getElementById("div2").className = "sty2"; document.getElementById("div3").className = "sty1 sty2"; } </script> </body></html>
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