1.监听对象
watch: {
'form.linkNum': {
handler: function() {
alert('我正在监听中')
}
}
},
watch: {
'form.linkNum'(newValue, oldValue) {
alert(oldValue)
alert(newValue)
}
}
监听字段不允许输入特殊字符
watch: {
'form.comment': {
deep: true,
handler(val) {
this.$nextTick(() => {
const pat = /[`~!@#$%^&*()_\-+=<>?:"{}|,.\/;'\\[\]·~!@#¥%&*()\-+={}|《》?:“”【】、;‘’,。、]/im
if (pat.test(val)) {
this.form.comment = val.slice(0, val.length - 1)
}
})
}
}
},
监听整个表单Object
watch: {
editForm: {
handler(n, o) {
// do something
},
deep: true// 深度监听父组件传过来对象变化
}
},
以后补充