微信小程序组件button

Posted 2020-08-14

表单组件button:官方文档

 

Demo Code:

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
    })
  }
};
//动态的往pageObject添加default、primary、warn函数属性
//方法体为切换当前key的尺寸大小
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);

JS

<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>

WXML

button{
    margin-top: 10px;
    padding-left: 10px;
    padding-right: 10px;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
}
.other-button-hover {
  background-color: blur;
}

WXSS

Tip:

js代码中for循环可以改成容易理解的书写方式，但要注意for循环体中定义变量的作用域问题。var&let

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

View Code