navinfo: [{ ‘NavName‘: ‘定位‘, ‘NavIcon‘: ‘location‘, ‘NavIconSize‘: ‘22px‘, ‘IconColor‘: ‘#000‘, ‘IconCheckedColor‘: ‘#fff‘, ‘IsChecked‘: ‘0‘ },
{ ‘NavName‘: ‘电池‘, ‘NavIcon‘: ‘shopping-cart‘, ‘NavIconSize‘: ‘22px‘, ‘IconColor‘: ‘#000‘, ‘IconCheckedColor‘: ‘#fff‘, ‘IsChecked‘: ‘0‘ },
{ ‘NavName‘: ‘救援‘, ‘NavIcon‘: ‘phone-circle‘, ‘NavIconSize‘: ‘22px‘, ‘IconColor‘: ‘#000‘, ‘IconCheckedColor‘: ‘#fff‘, ‘IsChecked‘: ‘1‘ },
{ ‘NavName‘: ‘我的‘, ‘NavIcon‘: ‘manager‘, ‘NavIconSize‘: ‘22px‘, ‘IconColor‘: ‘#000‘, ‘IconCheckedColor‘: ‘#fff‘, ‘IsChecked‘: ‘0‘ }]
如上代码，需要修改navinfo数组里面的第一个对象{ ‘NavName‘: ‘定位‘, ‘NavIcon‘: ‘location‘, ‘NavIconSize‘: ‘22px‘, ‘IconColor‘: ‘#000‘, ‘IconCheckedColor‘: ‘#fff‘, ‘IsChecked‘: ‘0‘ },里的IsChecked为1，其他的子项的IsChecked属性修改为0，
代码：
_onChange:function(e){ let that=this; var _index=e.currentTarget.dataset.index; for (let nav in that.properties.NavInfo){ if (nav == _index){ that.setData({ [‘NavInfo[‘ + nav + ‘].IsChecked‘]:1 }); }else{ that.setData({ [‘NavInfo[‘ + nav + ‘].IsChecked‘]: 0 }); } } }
以上函数中的e,由前端的data-index中获取，页面代码如下：
<view wx:for="{{NavInfo}}" wx:for-item="Item" style="">wx:key="*this" data-index="{{index}}" bindtap="_onChange" class="navItem">