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<script> export default { name:'modal', props: { value: { type: Boolean, default:false } }, data () { return { visible:false } }, watch:{ value(val) { this.visible = val; }, visible(val) { this.$emit("visible-change",val); } }, methods:{ cancel(){ this.visible = false; } }, mounted() { if (this.value) { this.visible = true; } } } </script>

///调用modal组件 <modal :value="isShow" @visible-change="modalVisibleChange">

export default { name: 'app', data () { return { isShow:true, } }, methods:{ modalVisibleChange(val){ this.isShow = val; } }