<div class="progress"> <div class="progress-bar progress-bar-info progress-bar-striped active" style="width: ${si.cpurchase/si.ctotal*100}%;"> <div class="progress-value"> ${si.cpurchase/si.ctotal*100}% </div> </div> </div> <h4>已購買：${si.cpurchase/si.ctotal*100}%</h4>怎么保留兩位小數(shù)或者一位