/** wxss **/
/** 修改button默认的点击态样式类**/
.button-hover{
 background-color:red;
}
/** 添加自定义button点击态样式类**/
.other-button-hover{
 background-color:blur;
}
<button type="default" size="{{defaultSize}}" loading="{{loading}}" plain="{{plain}}"
 disabled="{{disabled}}" bindtap="default" hover-class="other-button-hover"> default </button>
<button type="primary" size="{{primarySize}}" loading="{{loading}}" plain="{{plain}}"
 disabled="{{disabled}}" bindtap="primary"> primary </button>
<button type="warn" size="{{warnSize}}" loading="{{loading}}" plain="{{plain}}"
 disabled="{{disabled}}" bindtap="warn"> warn </button>
<button bindtap="setDisabled">点击设置以上按钮disabled属性</button>
<button bindtap="setPlain">点击设置以上按钮plain属性</button>
<button bindtap="setLoading">点击设置以上按钮loading属性</button>
var types = ['default', 'primary', 'warn']
var pageObject = {
 data: {
 defaultSize: 'default',
 primarySize: 'default',
 warnSize: 'default',
 disabled: false,
 plain: false,
 loading: false
 },
 setDisabled: function(e) {
 this.setData({
 disabled: !this.data.disabled
 })
 },
 setPlain: function(e) {
 this.setData({
 plain: !this.data.plain
 })
 },
 setLoading: function(e) {
 this.setData({
 loading: !this.data.loading
 })
 }
}

for (var i = 0; i < types.length; ++i) {
 (function(type) {
 pageObject[type] = function(e) {
 var key = type + 'Size'
 var changedData = {}
 changedData[key] =
 this.data[key] === 'default' ? 'mini' : 'default'
 this.setData(changedData)
 }
 })(types[i])
}

Page(pageObject)