JavaScript large, medium and small font display implementation code_javascript skills

<title>Large, medium and small font display</title> <a href="#" onclick="changeFontSize(document.getElementById('content'),this.style.fontSize);return false;" style="font-size: 16px;">Big</a> <a href="#" onclick="changeFontSize(document.getElementById('content'),this.style.fontSize);return false;" style="font-size: 14px;">中</a> <a href="#" onclick="changeFontSize(document.getElementById('content'),this.style.fontSize);return false;" style="font-size: 12px;">Small</a> <div id="content"> The Beijing-Tibet Expressway was blocked again for hundreds of kilometers after four days. <p> <font size="3"> Yesterday at 8 o’clock in the morning, CCTV reporters traveled along Ordos for more than 3 hours and only traveled more than 120 kilometers. Arrive at Hebei Dongyang River Toll Station. At this time, the toll station is open in both directions, and traffic congestion has been alleviated. </font></p> <p> <font size="3"> It is understood that as of 12 noon yesterday, the congestion in Inner Mongolia was up to 120 kilometers long. It is estimated that tens of thousands of vehicles are stranded. The main reasons are firstly that large trucks are slow to start after parking, and secondly that many large truck drivers fell asleep during traffic jams. </font></p> </div>
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