校验金额

		inputUp(e) {
			if (e.inputType == "deleteContentBackward") {
				// 判断是否是删除键
				this.$emit("methods_busType_input", this.amount)
				return
			}
			var reg = /^0\.([1-9]|\d[1-9])$|^[1-9]\d{0,8}\.\d{0,2}$|^[1-9]\d{0,8}$/;
			if (!reg.test(this.amount)) {
				this.amount = this.data_busType.amount
				if (e.data == "-" || e.data == "+") {
					if (this.data_busType.amount === "") {
						// 防止刚开始就输入'+'或者'-'
						this.amount = 0
					}
				}
			}
			this.$emit("methods_busType_input", this.amount)
		}