js restricts the input content of the text box code sharing (category 3)_javascript skills

The JavaScript restriction text box input content code shared with you is as follows

<style type="text/css">
<!--
.STYLE1 {
 color: #0099FF;
 font-weight: bold;
 font-size: x-large;
}
-->
</style>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p align="center" class="STYLE1">亲，试试效果吧！</p>
<p align="center"><strong>请输入数字或字母</strong>：
 <input onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))">
</p>
<p align="center"><strong>请输入数字，只能输入数字哦</strong>：
 <input onkeyup="value=value.replace(/[^\d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))">
</p>
<p align="center"><strong>请输入汉字，只能输入汉字哦</strong>：
 <input onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))">
</p>

Operation rendering:

Let me add some more for you:

There can only be up to two digits after the decimal point (both numbers and Chinese characters can be entered). Letters and arithmetic symbols cannot be entered:

<input onKeyPress="if((event.keyCode<48 || event.keyCode>57) && event.keyCode!=46 || //./d/d$/.test(value))event.returnValue=false">

Only numeric codes can be entered in the text box (decimal points cannot be entered either)

<input onkeyup="this.value=this.value.replace(//D/g,'')" onafterpaste="this.value=this.value.replace(//D/g,'')">

In fact, you can also restrict other content, such as only letters. You can try some other things.

The above is the JavaScript restriction text box input content code shared with everyone