textarea设置maxlength为100，输入到第101个字时不显示，但成功输入，导致提交的数据出现长度限制的错误，代码片段如下： <textarea v-show="textareaVisibale" @input="textareaInput($event,100,'memberDesc')" v-model="addForm.memberDesc" :show-confirm-bar="showConfirm"  auto-height="true" maxlength="100" :adjust-position="inputUp" @focus="inputFocus" @blur="inputBlur"/> textareaInput(event,maxlength,propertyName){ if(event.detail.cursor==maxlength){ uni.showToast({ title:'最多只能输入'+maxlength+'个字！', icon:'none', duration:2000 }) }else if(event.detail.cursor>maxlength){ uni.showToast({ title:'最多只能输入'+maxlength+'个字！', icon:'none', duration:2000 }) console.log('event.detail.cursor:',event.detail.cursor); console.log('event.detail.value:',event.detail.value); console.log('this.addForm[propertyName]:',this.addForm[propertyName]); // this.addForm[propertyName]=this.addForm[propertyName].substring(0,maxlength) // this.$set(event.detail,'value',event.detail.value.substring(0,maxlength)) } }, 测试结果如图： [图片]