呼叫子元件中的方法,明明定義了還報“Cannot read properties of undefined (reading 'fullValidEvent')”
阿新 • • 發佈:2021-11-29
在修改頁面,在父元件中直接呼叫子元件中的方法,通過ref來呼叫。明明在子元件中定義了這個方法,還一直報undefined
if (this.form.receivingType == 0) { await this.$refs.editTable1.fullValidEvent() } else if (this.form.receivingType == 1) { await this.$refs.editTable2.fullValidEvent() } else if (this.form.receivingType == 2) { await this.$refs.editTable3.fullValidEvent() }
我就嘗試先確定存在這個元件才呼叫這個方法,果然這樣可以
if (this.form.receivingType == 0) { this.$refs['editTable1'] && await this.$refs['editTable1'].fullValidEvent() } else if (this.form.receivingType == 1) { this.$refs['editTable2'] && await this.$refs['editTable2'].fullValidEvent() } else if (this.form.receivingType == 2) { this.$refs['editTable3'] && await this.$refs['editTable3'].fullValidEvent() }