菜鸟提问：input框限制只能输入数字或者带有两位小数的数字。

Question

<input type="text" class="form-control" id="ly" name="ly" placeholder="版次号"  onkeyup="this.value=this.value.replace(/[^\d\.\d{0,2}]/g,'')">

Answer 1

<input&nbsp;type&nbsp;=&nbsp;"text"&nbsp;name=&nbsp;"price"&nbsp;id&nbsp;=&nbsp;'price'&nbsp;onkeyup=&nbsp;"if(&nbsp;!&nbsp;/^d*(?:.d{0,2})?$/.test(this.value)){alert('只能输入数字，小数点后只能保留两位');this.value='';}"&nbsp;/>&nbsp;