JS驗證input輸入框（字母，數字，符號，中文）的代碼實例分享

<input type="text" onkeyup="value=value.replace(/[^a-zA-Z]/g,&#39;&#39;)">

<input type="text" onkeyup="value=value.replace(/[^\a-\z\A-\Z]/g,&#39;&#39;)"
onkeydown="fncKeyStop(event)" onpaste="return false"
oncontextmenu="return false" />

<input onkeyup="this.value=this.value.replace(/\D/g,&#39;&#39;)"
onafterpaste="this.value=this.value.replace(/\D/g,&#39;&#39;)">

<input name="price" type="text"
onkeyup="value=value.replace(/[^\d\.]/g,&#39;&#39;)">

<input name="price" type="text"
onkeyup="value=value.replace(/[^\d\._]/g,&#39;&#39;)">

<input onkeyup="value=value.replace(/[\W]/g,&#39;&#39;) "
onbeforepaste="clipboardData.setData(&#39;text&#39;,clipboardData.getData(&#39;text&#39;).replace(/[^\d]/g,&#39;&#39;))">

<input onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,&#39;&#39;)"
onbeforepaste="clipboardData.setData(&#39;text&#39;,clipboardData.getData(&#39;text&#39;).replace(/[^\u4E00-\u9FA5]/g,&#39;&#39;))">

<input type="text" style="ime-mode: disabled">

<input type="text"
onkeyup="value=value.replace(/[^\a-\z\A-\Z0-9\u4E00-\u9FA5\@\.]/g,&#39;&#39;)">

<input 
onblur
="
if
(this.value.replace(/^ +| +$/g,&#39;&#39;)==&#39;&#39;)alert(&#39;不能为空!&#39;)">