javascript使用正则控制input输入框允许输入的值方法大全

<input name="username" type="text" onkeyup="value=this.value.replace(//D+/g,'')">

<input name="username" type="text" style="ime-mode:disabled"><input name="username" type="text" onkeyup="value=value.replace(/[^/w/.//]/ig,'')">

<input name="username" type="text" onkeyup="value=value.replace(/[^/w=@#]|_/ig,'')">

<input name="name" type="text" value="只录入大写字母和数字" style="color:gray" onfocus="this.value='';this.style.color='black'" onkeyup="this.value=this.value.replace(/[^A-Z0-9]/gi,'');this.value=this.value.toLocaleUpperCase();

<input name="username" type="text" onkeyup="value=value.replace(/[^/u4E00-/u9FA5]/g,'')">

TextField.restrict = "此处为可输入的内容";field.restrict = "^此处为禁止输入的内容";

field.restrict = "a-zA-z"; //只允许大小字母field.restrict = "a-zA-z "; //只允许字母和空格field.restrict = "0-9"; //只允许数字field.restrict = "^abcdefg"; //除了小写字母abcdefg不允许外,其它都允许field.restrict = "^a-z"; //所有小写字母都不允许,但是,其它内容都允许,包括大写字母field.restrict = "0-9^5"; //只允许数字,但5例外

field.restrict = "0-9//-"; //允许数字和破折号field.restrict = "0-9//^"; //允许数字和^field.restrict = "0-9////"; //允许数字和反斜杠

field.restrict = "^/u001A";