1.

                                 
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methods: {            getTaxDate: function (date) {                this.startTime = date            },            getTaxEndDate: function (date) {                this.endTime = date            }}

data () {            return {                id: 'echartsBarType',                id2: 'echartsPieType',                option: {},                option2: {},                startTime: '',                endTime: ''            }        },

 

watch:{　　　　startTime() {                if (this.startTime) {                   console.log('开始时间',this.startTime)                } else {                    this.actTaxDate = '';                }            }}

二：

同时监听两个输入框，如果两个都有值才执行一些方法

用computed

computed: {            timeChange() {                const { startTime, endTime } = this                return {                    startTime,                    endTime                }            }        },

watch: {            timeChange: {                handler: function(val) {                    console.log('address change: ', val)                },                deep: true            }        },

 判断两个时间都有

watch: {            timeChange: {                handler: function(val) {                    if(val.startTime!=''&&val.endTime!=''){                        if(typeof val.startTime == 'string'&&typeof val.endTime=='string'){                            console.log('address change1: ',val)                        }                    }                },                deep: true            }        },

 加判断，结束时间必须大于开始时间（数据双向绑定）

getTaxDate: function (date) {                if(date>this.endTime&&this.endTime!=''){                    this.startTime = ''                    alert('开始时间不能大于结束时间');                }else{                    this.startTime = date                }            },            getTaxEndDate: function (date) {                if(date

 

 

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 完整代码：

 

export default {        name: 'incomeTotal',        data () {            return {                id: 'echartsBarType',                id2: 'echartsPieType',                option: {},                option2: {},                startTime: '',                endTime: ''            }        },        components: {            IncomeHeader,            Echarts        },        mounted () {            this.getAjax()        },        computed: {            timeChange() {                const { startTime, endTime } = this                return {                    startTime,                    endTime                }            }        },        watch: {            timeChange: {                handler: function(val) {                    if(val.startTime!=''&&val.endTime!=''){                        if(typeof val.startTime == 'string'&&typeof val.endTime=='string'){                            console.log('address change1: ',val)                        }                    }                },                deep: true            }        },        methods: {            getTaxDate: function (date) {                if(date>this.endTime&&this.endTime!=''){                    this.startTime = ''                    alert('开始时间不能大于结束时间');                }else{                    this.startTime = date                }			},            getTaxEndDate: function (date) {                if(date