小程序数字类型加小数点两位
<input type="digit" placeholder="请输入自定义金额" bindblur='price_no_focus' bindfocus="price_focus" value="{{price}}" bindinput="handleInput"/>
formatNum(e) { //正则验证金额输入框格式
e.detail.value = e.detail.value.replace(/^(\-)*(\d+)\.(\d{2}).*$/, '$1$2.$3')//只能输入两个小数
e.detail.value = e.detail.value.replace(/[\u4e00-\u9fa5]+/g, ""); //清除汉字
e.detail.value = e.detail.value.replace(/[^\d.]/g, ""); //清楚非数字和小数点
e.detail.value = e.detail.value.replace(/^\./g, ""); //验证第一个字符是数字而不是
e.detail.value = e.detail.value.replace(".", "$#$").replace(/\./g, "").replace("$#$", "."); //只保留第一个小数点, 清除多余的
},
handleInput:function(e){
var that = this;
that.formatNum(e);
that.data.price = e.detail.value;
that.setData({
price: that.data.price
})
},
