在下面的代码中,我试图使用getTranslation
对象映射originalKeys
数组中存在的值,并将值推入新的数组allKeys
中。
但是ESLint给我这个错误,Unexpected side effect in "getkeys" computed property.
我尝试将getkeys函数转换为方法,但是我认为每次都调用一个方法来完成翻译是没有意义的。
我该如何解决这个问题?
<template>
<select v-model="selected">
<option v-for="key in getkeys" v-bind:key="key"> {{ key }}</option
</select>
</template>
data(){
return{
selected: '',
allKeys: [],
originalKeys: [], //e.g. ["ALPHA_MIKE]
getTranslation: {} //e.g. {"ALPHA_MIKE": "ALPHA MIKE"}
}
},
computed: {
getkeys(){
let tableHeaders = [];
for( var i=0; i<this.originalKeys.length; i++){
let translation = this.getTranslation[this.originalKeys[i]];
tableHeaders.push(translation);
}
this.selected = tableHeaders[0]; //unexpected side effect here
this.allKeys = tableHeaders; //unexpected side effect here.
return this.allKeys;
}
}
最佳答案
正如我上面的评论,您不应在computed
属性中编辑其他数据,而应改用watch
computed: {
getkeys(){
let tableHeaders = [];
for( var i=0; i<this.originalKeys.length; i++){
let translation = this.getTranslation[this.originalKeys[i]];
tableHeaders.push(translation);
}
return tableHeaders;
}
},
watch: {
getkeys: {
deep: true,
handler: function (newVal) {
this.selected = newVal[0]
this.allKeys = newVal
}
}
}
关于javascript - 处理计算属性中的意外副作用-VueJS,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/53757107/