Get Element from dynamic class name in Vue js

Question

<v-data-table
:headers="menuheaders"
//this menus from api response
    :items="menus"
        item-key="usersmenu_menuid"
        items-per-page="1000"
        hide-default-footer=""
        class="elevation-1"
        >
            <template v-slot:item.usersmenu_read="{ item }">
                <v-checkbox :class="`read${item.usersmenu_read}`" :value="item.usersmenu_read === 1 ? true : false "></v-checkbox>
            </template>
            <template v-slot:item.usersmenu_edit="{ item }">
                <v-checkbox :class="`edit${item.usersmenu_edit}`" :value="item.usersmenu_edit === 1 ? true : false "></v-checkbox>
            </template>
            <template v-slot:item.usersmenu_add="{ item }">
                <v-checkbox :class="`add${item.usersmenu_add}`" :value="item.usersmenu_add === 1 ? true : false "></v-checkbox>
            </template>
            <template v-slot:item.usersmenu_delete="{ item }">
                <v-checkbox :class="`delete${item.usersmenu_delete}`" :value="item.usersmenu_delete === 1 ? true : false "></v-checkbox>
            </template>
        </v-data-table>

Hi all, i have problem with this code, i want to getElementByClassName

let read =  document.getElementsByClassName('read${usersmenu_read}')

But i dont know what i must fill in the flag.

let read =  document.getElementsByClassName(In this flag, What should i fill ?)

Please give me some explanation. Thanks for you all

yeah, i want get element from v-checbox by class name, but i dont know how to get it with getElementByClassName( i dont know what should i fill in here) — izzy45
– izzy45, Commented Feb 7, 2020 at 9:53
:class="`read${item.usersmenu_read}`" this gives class="read_and_here_item." and if you want get it document.getElementsByClassName(`read${usersmenu_read}`) you can use this. But usersmenu_read variable must be the same on v-checkbox class binding name. Add more code to understand the existing logic. — WebMan
– WebMan, Commented Feb 7, 2020 at 9:56

tony19 · Accepted Answer · 2022-07-15 05:03:37Z

1

Did you try to use $refs in VueJS instead of using getElementsByClassName. Follow this: https://v2.vuejs.org/v2/api/#ref

 <v-checkbox :class="`read${item.usersmenu_read}`" ref="readCheckbox" :value="item.usersmenu_read === 1 ? true : false "></v-checkbox>

// and use it in the component
this.$refs.readCheckbox

Update: for multiple checkbox
You can assign a ref to v-data-table instead directly in v-checkbox, and get all check box in DOM by use Vue $refs same above.
If you want to use getElementsByClass, you can give the checkboxes with a same name that not depend on menus data, say it's "menu-checkbox". Your checkbox will be:

<v-checkbox class="menu-checkbox" :class="`read${item.usersmenu_read}`" :value="item.usersmenu_read === 1 ? true : false "></v-checkbox>
// same for edit/add/delete

Now you can retrieve all checkboxes by:

document.getElementsByClassName('menu-checkbox')

edited Jul 15, 2022 at 5:03

tony19

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answered Feb 7, 2020 at 10:01

thanhdx

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2 Comments

izzy45 Over a year ago

i have try it, and works but how to get multiples data (like fill in array or slice)?

thanhdx Over a year ago

@izzy45 I edited the answer for getting multiple checkboxes

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