<textarea v-model="signUpformData.introduce" placeholder="请输入" maxlength="1000"
placeholderStyle="color:#999;font-size:13px;" clearable v-if="isEdit"
@blur="saveSession"></textarea>
maxlength属性必须要，否则就只能默认长度140标签：uniapp,限制,textarea,140,字数,maxlength From： https://www.cnblogs.com/LindaBlog/p/16636411.html