JQ Limit text box numeric decimal letter

Recently in the project to control the file box input, Google a bit, find some methods. and modified. The following code is validated and can be used normally.

// ----------------------------------------------------------------------//<summary>//The text box can only enter a number (excluding decimals) and mask the IME and paste//</summary>// ---------------------------------------------------------------------- $.fn.integer =function () {     This. Bind ("KeyPress",function(e) {varCode = (E.keycode E.keycode:e.which);//compatible with Firefox IE        if(!$.browser.msie && (E.keycode = = 0x8)) {//You can't use the backspace bar under Firefox            return; }        returnCode >= && Code <= 57;    });  This. bind ("Paste",function () {        return false;    });  This. Bind ("KeyUp",function () {        if(/(^0+)/.test ( This. Value)) {             This. Value = This. Value.replace (/^0*/, ");    }    });  This. Bind ("Focus",function () {         This. Style.imemode = ' disabled ';    });  This. Bind ("Blur",function () {        varReg =/^\d{1,}$/; if( This. Value.slice (-1) = = "") {             This. Value = "0"; }        if(Reg.test ( This. value) = = =false) {             This. Value = "0"; }    });};// ----------------------------------------------------------------------//<summary>//The text box can only enter numbers (including decimals) and mask input methods and paste//</summary>// ----------------------------------------------------------------------$.fn.number =function () {     This. Bind ("KeyPress",function(e) {varCode = (E.keycode E.keycode:e.which);//compatible with Firefox IE        if(!$.browser.msie && (E.keycode = = 0x8)) {//You can't use the backspace bar under Firefox            return; }        if( This. Value.indexof (".") = =-1) {            return(Code >= && Code <= 57) | | (Code = = 46); } Else {            returnCode >= && Code <= 57        }    });  This. bind ("Paste",function () {        return false;    });  This. Bind ("KeyUp",function () {        if( This. Value.slice (0, 1) = = ".") {             This. Value = "";    }    });  This. Bind ("Focus",function () {         This. Style.imemode = ' disabled ';    });  This. Bind ("Blur",function () {        varReg =/^-? [^\d]+\.? [^\d] {1,4}$/; if( This. Value.slice (-1) = = ".") {             This. Value = This. Value.slice (0, This. value.length-1); }        if( This. Value.slice (-1) = = "") {             This. Value = "0"; }        if(Reg.test ( This. value) = = =false) {             This. Value = "0"; }    });};// ----------------------------------------------------------------------//<summary>//limit input Letters only//</summary>// ----------------------------------------------------------------------$.fn.onlyalpha =function () {     This. Bind ("KeyPress",function(event) {varEVENTOBJ = Event | |e; varkeycode = Eventobj.keycode | |Eventobj.which; if((keycode >= && keycode <= 90) | | (KeyCode >= && keycode <= 122))            return true; Else            return false;    });  This. bind ("Paste",function () {        varClipboard = Window.clipboardData.getData ("Text"); if(/^[a-za-z]+$/. Test (clipboard))return true; Else            return false;    });  This. Bind ("Focus",function () {         This. Style.imemode = ' disabled '; });};// ----------------------------------------------------------------------//<summary>//limit input numbers and letters only//</summary>// ----------------------------------------------------------------------$.fn.onlynumalpha =function () {     This. Bind ("KeyPress",function(event) {varEVENTOBJ = Event | |e; varkeycode = Eventobj.keycode | |Eventobj.which; if((keycode >= && keycode <= 57) | | (KeyCode >= && keycode <= 90) | | (KeyCode >= && keycode <= 122))            return true; Else            return false;    });  This. bind ("Paste",function () {        varClipboard = Window.clipboardData.getData ("Text"); if(/^ (\d| [A-za-z]) +$/. Test (clipboard))return true; Else            return false;    });  This. Bind ("Focus",function () {         This. Style.imemode = ' disabled '; });};

Use the method to:

$ ("#Id"). Integer (), $ ("#Id"). Number (); $ ("#Id"). Onlyalpha (); $ ("#Id"). Onlynumalpha ();

JQ Limit text box numeric decimal letter