帝国cms的表单代码:input各种限制输入
2018-06-23 站长 站长日志
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<!DOCTYPE html>
< html >
< head lang = "en" >
< meta charset = "UTF-8" >
< title ></ title >
</ head >
< body >
< p >文本框只能输入数字代码(小数点也不能输入)</ p >
< input onkeyup = "this.value=this.value.replace(/\D/g,'')" onafterpaste = "this.value=this.value.replace(/\D/g,'')" >< br >< p ></ p >
< p >只能输入数字,能输小数点</ p >
< input onkeyup = "if(isNaN(value))execCommand('undo')" onafterpaste = "if(isNaN(value))execCommand('undo')" >< br >< p ></ p >
< input name = txt1 onchange = "if(/\D/.test(this.value)){alert('只能输入数字');this.value='';}" >< br >< p ></ p >
< p >数字和小数点方法二</ p >
< input type = text t_value = "" o_value = "" onkeypress = "if(!this.value.match(/^[/+/-]?\d*?\.?\d*?$/))this.value=this.t_value;else this.t_value=this.value;if(this.value.match(/^(?:[/+/-]?\d+(?:\.\d+)?)?$/))this.o_value=this.value" onkeyup = "if(!this.value.match(/^[/+/-]?\d*?\.?\d*?$/))this.value=this.t_value;else this.t_value=this.value;if(this.value.match(/^(?:[/+/-]?\d+(?:\.\d+)?)?$/))this.o_value=this.value" onblur = "if(!this.value.match(/^(?:[/+/-]?\d+(?:\.\d+)?|\.\d*?)?$/))this.value=this.o_value;else{if(this.value.match(/^\.\d+$/))this.value=0+this.value;if(this.value.match(/^\.$/))this.value=0;this.o_value=this.value}" >< br >< p ></ p >
< p >只能输入字母和汉字</ p >
< input onkeyup = "value=value.replace(/[/d]/g,'') " onbeforepaste = "clipboardData.setData('text',clipboardData.getData('text').replace(/[/d]/g,''))" maxlength = 10 name = "Numbers" >< br >< p ></ p >
< p >只能输入英文字母和数字,不能输入中文</ p >
< input onkeyup = "value=value.replace(/[^/w/.//]/ig,'')" >< br >< p ></ p >
< p >只能输入数字和英文</ p >
< font color = "Red" >chun</ font >
< input onKeyUp = "value=value.replace(/[^/d|chun]/g,'')" >< br >< p ></ p >
< p >7.小数点后只能有最多两位(数字,中文都可输入),不能输入字母和运算符号</ p >
< input onKeyPress="if((event.keyCode<48 || event.keyCode>57) && event.keyCode!=46 || /\.\d\d$/.test(value))event.returnValue=false">< br >< p ></ p >
< p >8.小数点后只能有最多两位(数字,字母,中文都可输入),可以输入运算符号</ p >
< p >这个正则出问题了,求各位大神现下神通,帮帮忙</ p >
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< p >只能输入汉字</ p >
< input onkeyup = "value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste = "clipboardData.setData('text',clipboardData.getData('text').replace(/[^/u4E00-/u9FA5]/g,''))" >< br >< p ></ p >
< p >只能输入数字</ p >
< input onkeyup = "value=value.replace(/[^/d]/g,'') " onbeforepaste = "clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))" >< br >< p ></ p >
< p >只能输入英文和数字:</ p >
< input onkeyup = "value=value.replace(/[/W]/g,'') " onbeforepaste = "clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))" >< br >< p ></ p >
< p >控制输入框只能输入文字或数字,也可以不允许输入特殊字符
这里不允许输入如下字符: (像 !@#$%^&* 等)</ p >
< textarea rows = 2 cols = 20 name = comments onKeypress="if ((event.keyCode > 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97)) event.returnValue = false;"></ textarea >
</ body >
</ html >
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