最近项目用到了weui 可以自定义tab切换，指定第几个tab激活状态，很方便

<div class="weui-tab weui-bs-tab" id="tab">
	<div class="weui-navbar">
		<div class="weui-navbar__item">数字货币充值</div>
		<div class="weui-navbar__item">法定货币充值</div>
	</div>
	<div class="weui-tab__panel">
		<div class="weui-tab__content">
			<div class="form-main">
				<div class="form-group">
					<div class="form-label">选择币种</div>
					<div class="form-row form-coin-row">
						<div class="flex_bd">
							<input type="text" class="weui-input" id="coinVal" placeholder="" readonly="readonly" value="USDT">
						</div>
						<div class="iconfont icon-down"></div>
					</div>
				</div>
				<div class="form-group">
					<div class="form-label">传输网络</div>
					<ul class="web-tags clearfix">
						<li class="active"><a href="recharge-pay.html">TRC20</a></li>
					</ul>
				</div>
				<div class="form-group">
					<div class="form-label">充值金额</div>
					<div class="form-row">
						<div class="flex_bd">
							<input type="text" class="weui-input" placeholder="请输入">
						</div>
					</div>
				</div>
				<div class="form-tip">
					注意:<br>
					禁止向USDT[TRC20]地址充值除USDT[TRC20]之外的资产，任何非USDT[TRC20]资产充入USDT[TRC20]地址将不可到账并不可找回。<br>
					充值时间为10-30分钟到账
				</div>
				<div class="form-button">
					<button class="weui-btn weui-btn_block weui-btn_primary" id="digitalRecharge" type="button">确认</button>
				</div>
			</div>
		</div>
		<div class="weui-tab__content">
			<div class="form-main">
				<div class="form-group">
					<div class="form-label">折合法币</div>
					<div class="form-row">
						<div class="flex_bd">
							<input type="number" id="inrPrice" class="weui-input" placeholder="请输入" >
						</div>
						<div class="mark-span legal-cion"><span class="mark-v legal-v">INR</span> <span class="iconfont icon-down"></span></div>
					</div>
				</div>
				<div class="form-group">
					<div class="form-label">充值数量</div>
					<div class="form-row">
						<div class="flex_bd">
							<input type="text" class="weui-input" placeholder="请输入">
						</div>
						<div class="mark-span"><span class="mark-v">USDT</span></div>
					</div>
				</div>
				<div class="form-tip text-green">
					法币充值提示:<br>
					充值金额3500INR（后台编辑）<br>
					充值时间为10-30分钟到账（后台编辑）
				</div>
				<div class="form-button">
					<button class="weui-btn weui-btn_block weui-btn_primary" id="legalRecharge" type="button">确认</button>
				</div>
			</div>
		</div>
	</div>
</div>

weui.tab('#tab',{
	defaultIndex: 0,
	onChange: function(index){
		console.log(index);
		if (index == 0) {
			$('.icon-jilu-a').show()
			$('.icon-jilu-b').hide()
		} else{
			$('.icon-jilu-a').hide()
			$('.icon-jilu-b').show()
		}
	}
});