<textarea
ref="textareaEle"
class="editor-inputer"
rows="1"
placeholder="Any thoughts..."
:style="{width: width + 'px', height: height + 'px'}"
@input="getTextareaValue">
</textarea>
const textareaEle = ref(null)
let width = ref(672)
let height = ref(24) // 默认高度
function getTextareaValue() {
const _ele = textareaEle.value; // 获取 textarea 元素
let lines = _ele.value.match(/\n/g); // 获取 textarea 输入的内容
if (lines != null) {
height.value = (lines.length + 1) * 24
}
}