ios端比較常見的，就是在頁面底部固定的輸入框，如下，一旦獲取焦點，彈出的輸入法鍵盤就會把input輸入框完全擋住，解決方法很簡單，加上下面的幾行程式碼即可

	      	$(".replay_text").on("click", function() {
		        setTimeout(function(){ 
		            document.body.scrollTop = document.body.scrollHeight; 
		        },300); 
		    })

完整dome：

<template>
	<div class="templ">
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<br /><br /><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<br /><br /><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
		<div>123</div><br />
	    
	    <div class="replyBox">
	      <div class="reply">
	        <textarea class="replay_text" rows="1" cols="10" maxlength="140" autofocus="autofocus" ref="content" :placeholder="placeText"/>
	        <button class="send">傳送</button>
	      </div>
	    </div>
  	</div>
</template>

<script>
	export default {
	    data() {
	      return {

	      };
	    },
	    mounted() {
	      	$(".replay_text").on("click", function() {
		        setTimeout(function(){ 
		            document.body.scrollTop = document.body.scrollHeight; 
		        },300); 
		    })
	    }
	}
</script>

<style scoped lang="less">
.replyBox{
    width: 100%;
    height: 0.8rem;
    padding: 0.1rem 0.2rem;
    position: fixed;
    bottom: 0;
    background: #fff;
    font-size: 0.26rem;
    border-top: 0.01rem solid #f2f2f2;
    z-index: 1;
    .reply{
	    height: 100%;
	    display: flex;
	    justify-content: space-between;
	    textarea{
		    height: 100%;
		    outline: none;
		    background: #f2f2f2;
		    padding: 0.1rem 0.1rem;
		    border: none;
		    resize: none;
		    caret-color: #fc9729;
	    }
	    .send{
		    display: inline-block;
		    padding: 0.1rem 0.1rem;
		    width: 18%;
		    border-radius: 0.06rem;
		    color: #fff;
		    font-size: 0.28rem;
		    background: #ffb955;
		    text-align: center;
		    margin-left: 0.2rem;
	    }
    }
}
</style>