Only input boxes that enter numbers, letters, and Chinese

The input box can only enter regular expressions for letters and dashes

<type= "text"  onkeyup= "This.value=this.value.replace (/[^_a-za-z] /g, ') "  onpaste=" This.value=this.value.replace (/[^_a-za-z]/g, ') ">

You can only enter numbers and English

<type= "text"  onkeyup= "This.value=this.value.replace (/[\w]/g,") "  onpaste=" This.value=this.value.replace (/[\w]/g, ') ">

The input box can only enter regular expressions for alphanumeric and horizontal lines

<type= "text"  onkeyup= "This.value=this.value.replace (/[^\w]/g, '" ) "  onpaste=" This.value=this.value.replace (/[^\w]/g, ') ">

Or

<type= "text"  onkeyup= "This.value=this.value.replace (/[\w]/g,") "  onpaste=" This.value=this.value.replace (/[\w]/g, ') ">

You can only enter Chinese

<type= "text"  onkeyup= "This.value=this.value.replace (/[^\u4e00-\ u9fa5]/g, ') "  onafterpaste=" This.value=this.value.replace (/[^\u4e00-\u9fa5]/g, ') "/ >

Only full-width characters can be entered

<type= "text"  onkeyup= "This.value=this.value.replace (/[^\uff00-\ uffff]/g, ') "  onafterpaste=" This.value=this.value.replace (/[^\uff00-\uffff]/g, ') "/ >

Only input boxes that enter numbers, letters, and Chinese