【JS】实时监控页面,input框数值自动求和
需求:
有一个页面需要将input框填入的各个费用自动相加,添加到“合计费用”里。
解决方案:
使用jquery的blur实践,每个费用的Input框检测到失去焦点时,将所有的input框数值相加求和,然后写入到“合计费用”框中
代码:
HTML代码如下所示
<!--管理费--> <div class="form-group"> <label class="col-xs-2 control-label">管理费</label> <div class="input-group col-xs-8"> <input type="number" class="form-control bill-count" name="fee_gl" autocomplete="off"> </div> </div> <!--光纤费--> <div class="form-group"> <label class="col-xs-2 control-label">光纤费</label> <div class="input-group col-xs-8"> <input type="number" step="0.01" class="form-control bill-count" name="fee_gx" autocomplete="off"> </div> </div> <!--税金--> <div class="form-group"> <label class="col-xs-2 control-label">税金</label> <div class="input-group col-xs-8"> <input type="number" step="0.01" class="form-control bill-count" name="fee_sj" autocomplete="off"> </div> </div> <!--社保--> <div class="form-group"> <label class="col-xs-2 control-label">社保</label> <div class="input-group col-xs-8"> <input type="number" step="0.01" class="form-control bill-count" name="fee_sb" autocomplete="off"> </div> </div> <!--公积金--> <div class="form-group"> <label class="col-xs-2 control-label">公积金</label> <div class="input-group col-xs-8"> <input type="number" step="0.01" class="form-control bill-count" name="fee_gjj" autocomplete="off"> </div> </div> <!--残障金--> <div class="form-group"> <label class="col-xs-2 control-label">残障金</label> <div class="input-group col-xs-8"> <input type="number" step="0.01" class="form-control bill-count" name="fee_czj" autocomplete="off"> </div> </div> <!--费用合计--> <div class="form-group"> <label class="col-xs-2 control-label">费用合计</label> <div class="input-group col-xs-8"> <input type="number" disabled id="fee-total" class="form-control" name="fee_total" value="0" autocomplete="off"> </div> </div>
JS代码如下所示
// 收款项失去焦点事件 $('.bill-count').blur(function(){ var _total = 0; $('.bill-count').each(function(){ _total += Number(this.value); }) $('#fee-total').val(_total); console.log(_total); })
运行结果:
如图所示,每个input框失去焦点后,会自动将所有input框的值相加填入到“费用合计”框中,达成预期效果。
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努力追赶上那个曾被寄予厚望的自己
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