textarea 限制输入字数
2019-07-23 本文已影响0人
Hi小胡
<textarea placeholder="请输入内容" name="" id="textarea" cols="30" rows="10"
maxlength="50" onchange="this.value=this.value.substring(0, 50)"
onkeydown="this.value=this.value.substring(0, 50)"
onkeyup="this.value=this.value.substring(0, 50)"></textarea>
关键部分：
maxlength="50"
onchange="this.value=this.value.substring(0, 50)"
onkeydown="this.value=this.value.substring(0, 50)"
onkeyup="this.value=this.value.substring(0, 50)"
