vue給元素動態添加class

vue給元素動態添加class

<p class="answerNum2" v-text="iteme.sel_num" :class="{letter: num }"></p> //自定義,如果num爲true，添加letter

<p class="answerNum2" v-text="iteme.sel_num" :class="{letter: iteme.sel_num == iteme.ok_num }"></p>  如果iteme.sel_num與iteme.ok_num相等，添加letter爲true，添加letter

<p class="answerNum2" v-text="iteme.sel_num" :class="{letter: textIndex == index }"></p>自定義textIndex 如果textIndex 與index 相等，添加letter爲true，添加letter

<p class="answerNum2" v-text="iteme.sel_num" :class="{letter: iteme.sel_num == iteme.ok_num, errorLetter: iteme.sel_num != iteme.ok_num}"></p> 如果iteme.sel_num與iteme.ok_num相等，添加letter爲true，添加letter，如果iteme.sel_num與iteme.ok_num不相等，添加letter爲true，添加errorLetter

<p class="answerNum2" v-text="iteme.sel_num" :class="{iteme.sel_num == iteme.ok_num ？letter：errorLetter}"></p>  如果iteme.sel_num與iteme.ok_num相等，添加letter爲true，添加letter，如果iteme.sel_num與iteme.ok_num不相等，添加letter爲true，添加errorLetter