input 正則限制輸入內容

1 <input type="text"onKeyUp="this.value=this.value.replace(/[^\.\d]/g,'');if(this.value.split('.').length>2){this.value=this.value.split('.')[0]+'.'+this.value.split('.')[1]}">

<inputōnkeyup="this.value=this.value.replace(/\D/g,'''')"ōnafterpaste="this.value=this.value.replace(/\D/g,'''')">

<inputōnkeyup="if(isNaN(value))execCommand(''undo'')"ōnafterpaste="if(isNaN(value))execCommand(''undo'')"> 
<input name=txt1ōnchange="if(/\D/.test(this.value)){alert(''只能輸入數字'');this.value='''';}">

<input type=text t_value="" o_value=""ōnkeypress="if(!this.value.match(/^[\+\-]?\d*?\.?\d*?$/))this.value=this.t_value;elsethis.t_value=this.value;if(this.value.match(/^(?:[\+\-]?\d+(?:\.\d+)?)?$/))this.o_value=this.value"ōnkeyup="if(!this.value.match(/^[\+\-]?\d*?\.?\d*?$/))this.value=this.t_value;elsethis.t_value=this.value;if(this.value.match(/^(?:[\+\-]?\d+(?:\.\d+)?)?$/))this.o_value=this.value"ōnblur="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}">

<input ōnkeyup="value=value.replace(/[\d]/g,'''')"onbeforepaste="clipboardData.setData(''text'',clipboardData.getData(''text'').replace(/[\d]/g,''''))"maxlength=10 name="Numbers">

<inputōnkeyup="value=value.replace(/[^\w\.\/]/ig,'''')">

<inputōnKeyUp="value=value.replace(/[^\d|chun]/g,'''')">

<inputōnKeyPress="if((event.keyCode<48 ||event.keyCode>57) &&event.keyCode!=46 ||/\.\d\d$/.test(value))event.returnValue=false">

<inputōnkeyup="this.value=this.value.replace(/^(\-)*(\d+)\.(\d\d).*$/,''$1$2.$3'')"> 

^[-+]?[0-9]+(\.[0-9]+)?$