el-input 格式化输入值-JZTXT

1. 只允许输入数字，并保留两位小数

<el-input
                        class="config-input"
                        type="number"
                        v-model="v.minHeight"
                        placeholder=""
                        :min="0"
                        @input="v.minHeight = Number(Number(v.minHeight).toFixed(2))"
                    /

2. 只允许输入数字，不可以有小数

<el-input
                        class="self-area-input"
                        type="number"
                        v-model="selfMixtureArea.self1Times"
                        placeholder=""
                        :min="0"
                        @input="selfMixtureArea.self1Times = Number(selfMixtureArea.self1Times.toString().replace(/[^\d]/g, ''))"
                    />