uts中函数的参数值是对象，有函数怎么获取？

你尝试一下给param指定类型：

        methods:{  
            click(){  
                type Option = {  
                    success(type:boolean):void  
                }  
                function show(param:Option){  
                    let modalParam:ShowModalOptions = {  
                        title:"yuhe",  
                        content:"66",  
                        showCancel:false,  
                        success:(res:ShowModalSuccess)=>{  
                            console.log("success")  
                            param.success(res.confirm)  
                        }  
                    }  
                    uni.showModal(modalParam)  
                }  

                let option:Option = {  
                    success(type:boolean) {  
                        console.log(type)  
                    }  
                }  
                show(option)