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jquery.number.js
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/** * jQuery number plug-in 2.1.5 * Copyright 2012, Digital Fusion * Licensed under the MIT license. * http://opensource.teamdf.com/license/ * * A jQuery plugin which implements a permutation of phpjs.org's number_format to provide * simple number formatting, insertion, and as-you-type masking of a number. * * @author Sam Sehnert * @docs http://www.teamdf.com/web/jquery-number-format-redux/196/ */ (function($){ "use strict"; /** * Method for selecting a range of characters in an input/textarea. * * @param int rangeStart : Where we want the selection to start. * @param int rangeEnd : Where we want the selection to end. * * @return void; */ function setSelectionRange( rangeStart, rangeEnd ) { // Check which way we need to define the text range. if( this.createTextRange ) { var range = this.createTextRange(); range.collapse( true ); range.moveStart( 'character', rangeStart ); range.moveEnd( 'character', rangeEnd-rangeStart ); range.select(); } // Alternate setSelectionRange method for supporting browsers. else if( this.setSelectionRange ) { this.focus(); this.setSelectionRange( rangeStart, rangeEnd ); } } /** * Get the selection position for the given part. * * @param string part : Options, 'Start' or 'End'. The selection position to get. * * @return int : The index position of the selection part. */ function getSelection( part ) { var pos = this.value.length; // Work out the selection part. part = ( part.toLowerCase() == 'start' ? 'Start' : 'End' ); if( document.selection ){ // The current selection var range = document.selection.createRange(), stored_range, selectionStart, selectionEnd; // We'll use this as a 'dummy' stored_range = range.duplicate(); // Select all text //stored_range.moveToElementText( this ); stored_range.expand('textedit'); // Now move 'dummy' end point to end point of original range stored_range.setEndPoint( 'EndToEnd', range ); // Now we can calculate start and end points selectionStart = stored_range.text.length - range.text.length; selectionEnd = selectionStart + range.text.length; return part == 'Start' ? selectionStart : selectionEnd; } else if(typeof(this['selection'+part])!="undefined") { pos = this['selection'+part]; } return pos; } /** * Substitutions for keydown keycodes. * Allows conversion from e.which to ascii characters. */ var _keydown = { codes : { 46 : 127, 188 : 44, 109 : 45, 190 : 46, 191 : 47, 192 : 96, 220 : 92, 222 : 39, 221 : 93, 219 : 91, 173 : 45, 187 : 61, //IE Key codes 186 : 59, //IE Key codes 189 : 45, //IE Key codes 110 : 46 //IE Key codes }, shifts : { 96 : "~", 49 : "!", 50 : "@", 51 : "#", 52 : "$", 53 : "%", 54 : "^", 55 : "&", 56 : "*", 57 : "(", 48 : ")", 45 : "_", 61 : "+", 91 : "{", 93 : "}", 92 : "|", 59 : ":", 39 : "\"", 44 : "<", 46 : ">", 47 : "?" } }; /** * jQuery number formatter plugin. This will allow you to format numbers on an element. * * @params proxied for format_number method. * * @return : The jQuery collection the method was called with. */ $.fn.number = function( number, decimals, dec_point, thousands_sep ){ // Enter the default thousands separator, and the decimal placeholder. thousands_sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep; dec_point = (typeof dec_point === 'undefined') ? '.' : dec_point; decimals = (typeof decimals === 'undefined' ) ? 0 : decimals; // Work out the unicode character for the decimal placeholder. var u_dec = ('\\u'+('0000'+(dec_point.charCodeAt(0).toString(16))).slice(-4)), regex_dec_num = new RegExp('[^'+u_dec+'0-9]','g'), regex_dec = new RegExp(u_dec,'g'); // If we've specified to take the number from the target element, // we loop over the collection, and get the number. if( number === true ) { // If this element is a number, then we add a keyup if( this.is('input:text') ) { // Return the jquery collection. return this.on({ /** * Handles keyup events, re-formatting numbers. * * Uses 'data' object to keep track of important information. * * data.c * This variable keeps track of where the caret *should* be. It works out the position as * the number of characters from the end of the string. E.g., '1^,234.56' where ^ denotes the caret, * would be index -7 (e.g., 7 characters from the end of the string). At the end of both the key down * and key up events, we'll re-position the caret to wherever data.c tells us the cursor should be. * This gives us a mechanism for incrementing the cursor position when we come across decimals, commas * etc. This figure typically doesn't increment for each keypress when to the left of the decimal, * but does when to the right of the decimal. * * @param object e : the keyup event object.s * * @return void; */ 'keydown.format' : function(e){ // Define variables used in the code below. var $this = $(this), data = $this.data('numFormat'), code = (e.keyCode ? e.keyCode : e.which), chara = '', //unescape(e.originalEvent.keyIdentifier.replace('U+','%u')), start = getSelection.apply(this,['start']), end = getSelection.apply(this,['end']), val = '', setPos = false; // Webkit (Chrome & Safari) on windows screws up the keyIdentifier detection // for numpad characters. I've disabled this for now, because while keyCode munging // below is hackish and ugly, it actually works cross browser & platform. // if( typeof e.originalEvent.keyIdentifier !== 'undefined' ) // { // chara = unescape(e.originalEvent.keyIdentifier.replace('U+','%u')); // } // else // { if (_keydown.codes.hasOwnProperty(code)) { code = _keydown.codes[code]; } if (!e.shiftKey && (code >= 65 && code <= 90)){ code += 32; } else if (!e.shiftKey && (code >= 69 && code <= 105)){ code -= 48; } else if (e.shiftKey && _keydown.shifts.hasOwnProperty(code)){ //get shifted keyCode value chara = _keydown.shifts[code]; } if( chara == '' ) chara = String.fromCharCode(code); // } // Stop executing if the user didn't type a number key, a decimal character, backspace, or delete. if( code != 8 && code != 45 && code != 127 && chara != dec_point && !chara.match(/[0-9]/) ) { // We need the original keycode now... var key = (e.keyCode ? e.keyCode : e.which); if( // Allow control keys to go through... (delete, backspace, tab, enter, escape etc) key == 46 || key == 8 || key == 127 || key == 9 || key == 27 || key == 13 || // Allow: Ctrl+A, Ctrl+R, Ctrl+P, Ctrl+S, Ctrl+F, Ctrl+H, Ctrl+B, Ctrl+J, Ctrl+T, Ctrl+Z, Ctrl++, Ctrl+-, Ctrl+0 ( (key == 65 || key == 82 || key == 80 || key == 83 || key == 70 || key == 72 || key == 66 || key == 74 || key == 84 || key == 90|| key == 61 || key == 173 || key == 48) && ( e.ctrlKey || e.metaKey ) === true ) || // Allow: Ctrl+V, Ctrl+C, Ctrl+X ( (key == 86 || key == 67 || key == 88) && ( e.ctrlKey || e.metaKey ) === true ) || // Allow: home, end, left, right ( (key >= 35 && key <= 39) ) || // Allow: F1-F12 ( (key >= 112 && key <= 123) ) ){ return; } // But prevent all other keys. e.preventDefault(); return false; } // The whole lot has been selected, or if the field is empty... if( start == 0 && end == this.value.length ) //|| $this.val() == 0 ) { if( code == 8 ) // Backspace { // Blank out the field, but only if the data object has already been instantiated. start = end = 1; this.value = ''; // Reset the cursor position. data.init = (decimals>0?-1:0); data.c = (decimals>0?-(decimals+1):0); setSelectionRange.apply(this, [0,0]); } else if( chara == dec_point ) { start = end = 1; this.value = '0'+ dec_point + (new Array(decimals+1).join('0')); // Reset the cursor position. data.init = (decimals>0?1:0); data.c = (decimals>0?-(decimals+1):0); } else if( code == 45 ) // Negative sign { start = end = 2; this.value = '-0'+dec_point + (new Array(decimals+1).join('0')); // Reset the cursor position. data.init = (decimals>0?1:0); data.c = (decimals>0?-(decimals+1):0); setSelectionRange.apply(this, [2,2]); } else { // Reset the cursor position. data.init = (decimals>0?-1:0); data.c = (decimals>0?-(decimals):0); } } // Otherwise, we need to reset the caret position // based on the users selection. else { data.c = end-this.value.length; } // Track if partial selection was used data.isPartialSelection = start == end ? false : true; // If the start position is before the decimal point, // and the user has typed a decimal point, we need to move the caret // past the decimal place. if( decimals > 0 && chara == dec_point && start == this.value.length-decimals-1 ) { data.c++; data.init = Math.max(0,data.init); e.preventDefault(); // Set the selection position. setPos = this.value.length+data.c; } // Ignore negative sign unless at beginning of number (and it's not already present) else if( code == 45 && (start != 0 || this.value.indexOf('-') == 0) ) { e.preventDefault(); } // If the user is just typing the decimal place, // we simply ignore it. else if( chara == dec_point ) { data.init = Math.max(0,data.init); e.preventDefault(); } // If hitting the delete key, and the cursor is before a decimal place, // we simply move the cursor to the other side of the decimal place. else if( decimals > 0 && code == 127 && start == this.value.length-decimals-1 ) { // Just prevent default but don't actually move the caret here because it's done in the keyup event e.preventDefault(); } // If hitting the backspace key, and the cursor is behind a decimal place, // we simply move the cursor to the other side of the decimal place. else if( decimals > 0 && code == 8 && start == this.value.length-decimals ) { e.preventDefault(); data.c--; // Set the selection position. setPos = this.value.length+data.c; } // If hitting the delete key, and the cursor is to the right of the decimal // we replace the character after the caret with a 0. else if( decimals > 0 && code == 127 && start > this.value.length-decimals-1 ) { if( this.value === '' ) return; // If the character following is not already a 0, // replace it with one. if( this.value.slice(start, start+1) != '0' ) { val = this.value.slice(0, start) + '0' + this.value.slice(start+1); // The regex replacement below removes negative sign from numbers... // not sure why they're necessary here when none of the other cases use them //$this.val(val.replace(regex_dec_num,'').replace(regex_dec,dec_point)); $this.val(val); } e.preventDefault(); // Set the selection position. setPos = this.value.length+data.c; } // If hitting the backspace key, and the cursor is to the right of the decimal // (but not directly to the right) we replace the character preceding the // caret with a 0. else if( decimals > 0 && code == 8 && start > this.value.length-decimals ) { if( this.value === '' ) return; // If the character preceding is not already a 0, // replace it with one. if( this.value.slice(start-1, start) != '0' ) { val = this.value.slice(0, start-1) + '0' + this.value.slice(start); // The regex replacement below removes negative sign from numbers... // not sure why they're necessary here when none of the other cases use them //$this.val(val.replace(regex_dec_num,'').replace(regex_dec,dec_point)); $this.val(val); } e.preventDefault(); data.c--; // Set the selection position. setPos = this.value.length+data.c; } // If the delete key was pressed, and the character immediately // after the caret is a thousands_separator character, simply // step over it. else if( code == 127 && this.value.slice(start, start+1) == thousands_sep ) { // Just prevent default but don't actually move the caret here because it's done in the keyup event e.preventDefault(); } // If the backspace key was pressed, and the character immediately // before the caret is a thousands_separator character, simply // step over it. else if( code == 8 && this.value.slice(start-1, start) == thousands_sep ) { e.preventDefault(); data.c--; // Set the selection position. setPos = this.value.length+data.c; } // If the caret is to the right of the decimal place, and the user is entering a // number, remove the following character before putting in the new one. else if( decimals > 0 && start == end && this.value.length > decimals+1 && start > this.value.length-decimals-1 && isFinite(+chara) && !e.metaKey && !e.ctrlKey && !e.altKey && chara.length === 1 ) { // If the character preceding is not already a 0, // replace it with one. if( end === this.value.length ) { val = this.value.slice(0, start-1); } else { val = this.value.slice(0, start)+this.value.slice(start+1); } // Reset the position. this.value = val; setPos = start; } // If we need to re-position the characters. if( setPos !== false ) { //console.log('Setpos keydown: ', setPos ); setSelectionRange.apply(this, [setPos, setPos]); } // Store the data on the element. $this.data('numFormat', data); }, /** * Handles keyup events, re-formatting numbers. * * @param object e : the keyup event object.s * * @return void; */ 'keyup.format' : function(e){ // Store these variables for use below. var $this = $(this), data = $this.data('numFormat'), code = (e.keyCode ? e.keyCode : e.which), start = getSelection.apply(this,['start']), end = getSelection.apply(this,['end']), setPos; // Check for negative characters being entered at the start of the string. // If there's any kind of selection, just ignore the input. if( start === 0 && end === 0 && ( code === 189 || code === 109 ) ) { $this.val('-'+$this.val()); start = 1; data.c = 1-this.value.length; data.init = 1; $this.data('numFormat', data); setPos = this.value.length+data.c; setSelectionRange.apply(this, [setPos, setPos]); } // Stop executing if the user didn't type a number key, a decimal, or a comma. if( this.value === '' || (code < 48 || code > 57) && (code < 96 || code > 105 ) && code !== 8 && code !== 46 && code !== 110 ) return; // Re-format the textarea. $this.val($this.val()); if( decimals > 0 ) { // If we haven't marked this item as 'initialized' // then do so now. It means we should place the caret just // before the decimal. This will never be un-initialized before // the decimal character itself is entered. if( data.init < 1 ) { start = this.value.length-decimals-( data.init < 0 ? 1 : 0 ); data.c = start-this.value.length; data.init = 1; $this.data('numFormat', data); } // Increase the cursor position if the caret is to the right // of the decimal place, and the character pressed isn't the backspace key. else if( start > this.value.length-decimals && code != 8 ) { data.c++; // Store the data, now that it's changed. $this.data('numFormat', data); } } // Move caret to the right after delete key pressed if (code == 46 && !data.isPartialSelection) { data.c++; // Store the data, now that it's changed. $this.data('numFormat', data); } //console.log( 'Setting pos: ', start, decimals, this.value.length + data.c, this.value.length, data.c ); // Set the selection position. setPos = this.value.length+data.c; setSelectionRange.apply(this, [setPos, setPos]); }, /** * Reformat when pasting into the field. * * @param object e : jQuery event object. * * @return false : prevent default action. */ 'paste.format' : function(e){ // Defint $this. It's used twice!. var $this = $(this), original = e.originalEvent, val = null; // Get the text content stream. if (window.clipboardData && window.clipboardData.getData) { // IE val = window.clipboardData.getData('Text'); } else if (original.clipboardData && original.clipboardData.getData) { val = original.clipboardData.getData('text/plain'); } // Do the reformat operation. $this.val(val); // Stop the actual content from being pasted. e.preventDefault(); return false; } }) // Loop each element (which isn't blank) and do the format. .each(function(){ var $this = $(this).data('numFormat',{ c : -(decimals+1), decimals : decimals, thousands_sep : thousands_sep, dec_point : dec_point, regex_dec_num : regex_dec_num, regex_dec : regex_dec, init : this.value.indexOf('.') ? true : false }); // Return if the element is empty. if( this.value === '' ) return; // Otherwise... format!! $this.val($this.val()); }); } else { // return the collection. return this.each(function(){ var $this = $(this), num = +$this.text().replace(regex_dec_num,'').replace(regex_dec,'.'); $this.number( !isFinite(num) ? 0 : +num, decimals, dec_point, thousands_sep ); }); } } // Add this number to the element as text. return this.text( $.number.apply(window,arguments) ); }; // // Create .val() hooks to get and set formatted numbers in inputs. // // We check if any hooks already exist, and cache // them in case we need to re-use them later on. var origHookGet = null, origHookSet = null; // Check if a text valHook already exists. if( $.isPlainObject( $.valHooks.text ) ) { // Preserve the original valhook function // we'll call this for values we're not // explicitly handling. if( $.isFunction( $.valHooks.text.get ) ) origHookGet = $.valHooks.text.get; if( $.isFunction( $.valHooks.text.set ) ) origHookSet = $.valHooks.text.set; } else { // Define an object for the new valhook. $.valHooks.text = {}; } /** * Define the valHook to return normalised field data against an input * which has been tagged by the number formatter. * * @param object el : The raw DOM element that we're getting the value from. * * @return mixed : Returns the value that was written to the element as a * javascript number, or undefined to let jQuery handle it normally. */ $.valHooks.text.get = function( el ){ // Get the element, and its data. var $this = $(el), num, negative, data = $this.data('numFormat'); // Does this element have our data field? if( !data ) { // Check if the valhook function already existed if( $.isFunction( origHookGet ) ) { // There was, so go ahead and call it return origHookGet(el); } else { // No previous function, return undefined to have jQuery // take care of retrieving the value return undefined; } } else { // Remove formatting, and return as number. if( el.value === '' ) return ''; // Convert to a number. num = +(el.value .replace( data.regex_dec_num, '' ) .replace( data.regex_dec, '.' )); // If we've got a finite number, return it. // Otherwise, simply return 0. // Return as a string... thats what we're // used to with .val() return (el.value.indexOf('-') === 0 ? '-' : '')+( isFinite( num ) ? num : 0 ); } }; /** * A valhook which formats a number when run against an input * which has been tagged by the number formatter. * * @param object el : The raw DOM element (input element). * @param float : The number to set into the value field. * * @return mixed : Returns the value that was written to the element, * or undefined to let jQuery handle it normally. */ $.valHooks.text.set = function( el, val ) { // Get the element, and its data. var $this = $(el), data = $this.data('numFormat'); // Does this element have our data field? if( !data ) { // Check if the valhook function already exists if( $.isFunction( origHookSet ) ) { // There was, so go ahead and call it return origHookSet(el,val); } else { // No previous function, return undefined to have jQuery // take care of retrieving the value return undefined; } } else { var num = $.number( val, data.decimals, data.dec_point, data.thousands_sep ); // Make sure empties are set with correct signs. // if(val.indexOf('-') === 0 && +num === 0) // { // num = '-'+num; // } return $.isFunction(origHookSet) ? origHookSet(el, num) : el.value = num; } }; /** * The (modified) excellent number formatting method from PHPJS.org. * http://phpjs.org/functions/number_format/ * * @modified by Sam Sehnert (teamdf.com) * - don't redefine dec_point, thousands_sep... just overwrite with defaults. * - don't redefine decimals, just overwrite as numeric. * - Generate regex for normalizing pre-formatted numbers. * * @param float number : The number you wish to format, or TRUE to use the text contents * of the element as the number. Please note that this won't work for * elements which have child nodes with text content. * @param int decimals : The number of decimal places that should be displayed. Defaults to 0. * @param string dec_point : The character to use as a decimal point. Defaults to '.'. * @param string thousands_sep : The character to use as a thousands separator. Defaults to ','. * * @return string : The formatted number as a string. */ $.number = function( number, decimals, dec_point, thousands_sep ){ // Set the default values here, instead so we can use them in the replace below. thousands_sep = (typeof thousands_sep === 'undefined') ? ( new Number(1000).toLocaleString() !== '1000' ? new Number(1000).toLocaleString().charAt(1) : '' ) : thousands_sep; dec_point = (typeof dec_point === 'undefined') ? new Number(0.1).toLocaleString().charAt(1) : dec_point; decimals = !isFinite(+decimals) ? 0 : Math.abs(decimals); // Work out the unicode representation for the decimal place and thousand sep. var u_dec = ('\\u'+('0000'+(dec_point.charCodeAt(0).toString(16))).slice(-4)); var u_sep = ('\\u'+('0000'+(thousands_sep.charCodeAt(0).toString(16))).slice(-4)); // Fix the number, so that it's an actual number. number = (number + '') .replace('\.', dec_point) // because the number if passed in as a float (having . as decimal point per definition) we need to replace this with the passed in decimal point character .replace(new RegExp(u_sep,'g'),'') .replace(new RegExp(u_dec,'g'),'.') .replace(new RegExp('[^0-9+\-Ee.]','g'),''); var n = !isFinite(+number) ? 0 : +number, s = '', toFixedFix = function (n, decimals) { return '' + (+(Math.round(('' + n).indexOf('e') > 0 ? n : n + 'e+' + decimals) + 'e-' + decimals)); }; // Fix for IE parseFloat(0.55).toFixed(0) = 0; s = (decimals ? toFixedFix(n, decimals) : '' + Math.round(n)).split('.'); if (s[0].length > 3) { s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, thousands_sep); } if ((s[1] || '').length < decimals) { s[1] = s[1] || ''; s[1] += new Array(decimals - s[1].length + 1).join('0'); } return s.join(dec_point); } })(jQuery);