JavaScript numeric character validation regular code

<input type= "text" name= "TextField" onkeypress= "Javascript:alert (Event.keycode); return flase" >
1. Text box can only enter a numeric code (decimal point can not enter)
<input onkeyup= "This.value=this.value.replace (/d/g,") "Onafterpaste=" This.value=this.value.replace (/D/g, "") " >
2. Only numbers can be entered and the decimal point may be lost.
<input onkeyup= "if (isNaN (value)) ExecCommand (' Undo ') ' onafterpaste= ' if (isNaN (value)) ExecCommand (' Undo ') >
<input name=txt1 onchange= "if (/d/.test (this.value)) {alert (' can only enter numbers '); this.value= ';} ' >
3. Number and decimal method two
<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 (/^ (?: [+-]?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} ">
4. Only letters and characters can be entered
<input onkeyup= "Value=value.replace (/[d]/g,") "Onbeforepaste=" Clipboarddata.setdata (' text ', Clipboarddata.getdata (' text '). Replace (/[d]/g, ') "maxlength=10 name=" Numbers ">
5. Can only enter English letters and numbers, can not enter Chinese
<input onkeyup= "Value=value.replace (/[^w./]/ig, ')" >
6. Only digital and English <font color= "Red" >chun</font>
<input onkeyup= "Value=value.replace (/[^d|chun]/g, ')" >
7. Only a maximum of two digits after the decimal point (number, Chinese can be entered), can not enter letters and operational symbols:
<input onkeypress= "If" (event.keycode<48 | | event.keycode>57) && event.keycode!=46 | |/.dd$/.test ( Value)) Event.returnvalue=false ">
8. After the decimal point can only have up to two digits (numbers, letters, Chinese can be entered), you can enter operational symbols:
<input onkeyup= "This.value=this.value.replace (/^ (-) * (d+). ( DD). *$/, ' $1$2.$3 ' >
<input onkeyup= "Value=value.replace (/[^d.] /g, ') ' >
<input type=text onkeypress= "return event.keycode>=65" style= "ime-mode:disabled" >
<input type=text t_value= "" o_value= "" onkeypress= "if!this.value.match (/^[+-]?d*?.? d*?$/)) 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 (/^ (?: [+-]?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 onkeyup= "This.value=this.value.replace (/d/g,") "Onafterpaste=" This.value=this.value.replace (/D/g, "") " >
Or
<input name=txt1 onchange= "if (/d/.test (this.value)) {alert (' can only enter numbers '); this.value= ';} ' >
Or
<input onkeyup= "if (isNaN (value)) ExecCommand (' Undo ') ' onafterpaste= ' if (isNaN (value)) ExecCommand (' Undo ') >

Restrict text boxes to only enter numbers including decimal points
<input onkeyup= "Value=value.replace (/[^d.] /g, ') ' >
About regular expression 1. Only numbers and English can be entered: <input onkeyup= "Value=value.replace (/[w]/g,") "Onbeforepaste=" Clipboarddata.setdata (' Text ', Clipboarddata.getdata (' text '). Replace (/[^d]/g, ') "id=" Text1 "name=" Text1 ">
2. Only numbers can be entered: <input onkeyup= "Value=value.replace (/[^d]/g,") "Onbeforepaste=" Clipboarddata.setdata (' text ', Clipboarddata.getdata (' text '). Replace (/[^d]/g, ') "id=" Text2 "name=" Text2 ">
3. Only the full angle can be entered: <input onkeyup= "Value=value.replace (/[^uff00-uffff]/g,") "Onbeforepaste=" Clipboarddata.setdata (' Text ', Clipboarddata.getdata (' text '). Replace (/[^uff00-uffff]/g, ') "id=" Text3 "name=" Text3 ">
4. Only Chinese characters can be entered: <input onkeyup= "Value=value.replace (/[^u4e00-u9fa5]/g,") "Onbeforepaste=" Clipboarddata.setdata (' Text ', Clipboarddata.getdata (' text '). Replace (/[^u4e00-u9fa5]/g, ') "id=" Text4 "name=" TEXT4 ">
When you move to an input box, it is automatically selected: <input type= "text" id= "Text1" name= "Text1" value= "input retrieves the keyword" onclick= "Javascript:this.form.text1.focus ( ); This.form.text1.select (); "Maxlength="/>