vue.js:597 [Vue warn]: Error in callback for watcher "dat": "TypeError: Cannot read property 'call'

vue.js:597 [Vue warn]: Error in callback for watcher "dat": "TypeError: Cannot read property 'call' of undefined"watch监听器，深度监听模式属性写错，dat:{deep:true,...

eadela

2589人浏览 · 2020-04-15 10:52:05

eadela · 2020-04-15 10:52:05 发布

vue.js:597 [Vue warn]: Error in callback for watcher "dat": "TypeError: Cannot read property 'call' of undefined"

watch监听器，深度监听

模式属性写错，

                dat:{
                    deep:true,
                    hander:function (newV, oldV) {
                        console.log(newV[0].name)
                    }
                },

hander写错了，应该是handler

出错，进本是格式写错，到官网查一查

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