限制隻能輸入數字,并且限制輸入長度
<input type="text" id="phone" oninput="value=value.replace(/[^\d]/g,'')" maxlength="11"/>
<input type="number" oninput="value=value.replace(/[^\d]/g,'')">
if (this.value.length >= 0) {
this.value = this.value.replace(/[^\d]/g, '').replace(/^0{1,}/g, '')
}