我有一个Vue实例,它具有五个计算属性函数,它们为不同的值执行相同的操作。我重复了一下自己,想知道更干净的方式来做到这一点,而不用重复我自己。如何使用Vue计算属性中的参数重用函数?
在HTML模板我有五个输入字段,每个输入字段限制为25个字符,我想,以显示我显示一个字符计数器:
<div class='field is-grouped'>
<p class='control is-expanded'>
<input
class="input"
placeholder="Trophy engraving line 1 (25 character limit)"
v-model='engraving.line1'
v-validate="'required'"
:class="{'input': true, 'is-danger': errors.has('engraving.line1') }"
name='engraving.line1'>
</p>
<p class='control'>
<span>{{ line1count }}</span>
</p>
</div>
我有五场,看起来完全一样除了他们说engraving.line2
,engraving.line3
,engraving.line4
和engraving.line5
。
然后我的组件javascript我定义雕刻对象,并为每个字段具有相同的计算方法。
export default {
data(){
return {
engraving: {
line1: '',
line2: '',
line3: '',
line4: '',
line5: '',
}
};
},
computed: {
line1count() {
var chars = this.engraving.line1.length,
limit = 25;
return (limit - chars) + "/" + limit + " characters remaining";
},
line2count(){
var chars = this.engraving.line2.length,
limit = 25;
return (limit - chars) + "/" + limit + " characters remaining";
},
line3count(){
var chars = this.engraving.line3.length,
limit = 25;
return (limit - chars) + "/" + limit + " characters remaining";
},
line4count(){
var chars = this.engraving.line4.length,
limit = 25;
return (limit - chars) + "/" + limit + " characters remaining";
},
line5count(){
var chars = this.engraving.line5.length,
limit = 25;
return (limit - chars) + "/" + limit + " characters remaining";
}
},
我怎样才能resuse该函数接受一个数据参数,而不是重复自己这么多?
这是使一个伟大的小部件之类的话。 – Bert