基本信息
源码名称：正则表达式 验证输入框 示例源码(纯js实现)
源码大小：0.02M
文件格式：.rar
开发语言：js
更新时间：2018-03-13
   源码介绍

纯js实现正则表达式 验证输入框内容 


<!DOCTYPE html>
<html>

	<head>
	<meta charset="utf-8">
		<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
	</head>
	<style>
		.col-md-6{padding-left: 0;}
		.col-md-12 .col-md-6 input{width: 100%;}
		
	</style>

	<body>
		<div class="container">
			<div class="row">
				<form class="col-md-8 col-lg-offset-2">
					<h5>输入框类型</h5>
					<label class="control-label">1.文本框只能输入数字代码(小数点也不能输入)</label>
					<input class="form-control" onKeyUp="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')">
					<br>
					<label class="control-label">2.只能输入数字,能输小数点.</label>
					<div class="col-md-12 form-inline" style="padding: 0;">
						<div class="col-md-6">
							<input class="form-control" onKeyUp="if(isNaN(value))execCommand('undo')" onafterpaste="if(isNaN(value))execCommand('undo')">
						</div>
						<div class="col-md-6">
							<input class="form-control" name="txt1" onChange="if(/\D/.test(this.value)){alert('只能输入数字');this.value='';}">
						</div>
					</div>
					<br>
					<label class="control-label">3.数字和小数点方法二</label>
					<input class="form-control" 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>
					<label class="control-label">4.只能输入字母和汉字</label>
					<input class="form-control" onKeyUp="value=value.replace(/[\d]/g,'') " onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[\d]/g,''))" maxlength="10" name="Numbers"> <br>
					<label class="control-label">5.只能输入英文字母和数字,不能输入中文</label>
					<input class="form-control" onKeyUp="value=value.replace(/[^\w\.\/]/ig,'')"> <br>
					<label class="control-label">6.只能输入数字和英文</label
					><font color="Red">chun</font>
					<input class="form-control" onKeyUp="value=value.replace(/[^\d|chun]/g,'')"> <br>
					<label class="control-label">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:</label>
					<input class="form-control" onKeyPress="if((event.keyCode<48 || event.keyCode>57) &amp;&amp; event.keyCode!=46 || /\.\d\d$/.test(value))event.returnValue=false"> <br>
					<label class="control-label">8.小数点后只能有最多两位(数字,字母,中文都可输入),可以输入运算符号:</label>
					<input class="form-control" onKeyUp="this.value=this.value.replace(/^(\-)*(\d )\.(\d\d).*$/,'$1$2.$3')"><br />
					<label class="control-label"> 只能是数字和小数点和加减乘際 </label>
					<input class="form-control" type="text"onkeypress="return event.keyCode&gt;=4&amp;&amp;event.keyCode &lt;=57 " />
				</form>
			</div>
		</div>

	</body>

</html>