<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>