https://mycadmium.com/includes/js/numeric.js?_=08.17.2022.20.48

1/*
2 *
3 * Copyright (c) 2006-2010 Sam Collett (http://www.texotela.co.uk)
4 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
5 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
6 * 
7 * Version 1.2
8 * Demo: http://www.texotela.co.uk/code/jquery/numeric/
9 *
10 */
11(function($) {
12/*
13 * Allows only valid characters to be entered into input boxes.
14 * Note: does not validate that the final text is a valid number
15 * (that could be done by another script, or server-side)
16 *
17 * @name     numeric
18 * @param    decimal      Decimal separator (e.g. '.' or ',' - default is '.'). Pass false for integers
19 * @param    callback     A function that runs if the number is not valid (fires onblur)
20 * @author   Sam Collett (http://www.texotela.co.uk)
21 * @example  $(".numeric").numeric();
22 * @example  $(".numeric").numeric(",");
23 * @example  $(".numeric").numeric(null, callback);
24 *
25 */
26$.fn.numeric = function(decimal, callback) {
27	decimal = (decimal === false) ? "" : decimal || ".";
28	callback = typeof callback == "function" ? callback : function(){};
29	$(document).on('input', this.selector, $.fn.numeric.input)
30	return this.data("numeric.decimal", decimal).data("numeric.callback", callback).data("numeric.negative", true).keyup($.fn.numeric.keyup).keypress($.fn.numeric.keypress).blur($.fn.numeric.blur);
31}
32
33
34$.fn.numeric.keypress = function(e) {
35	var min = $(this).attr('min') || undefined;
36	var max = $(this).attr('max') || undefined;
37	var decimal = $.data(this, "numeric.decimal");
38	
39	var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
40
41	// allow enter/return key (only when in an input box)
42	if(key == 13 && this.nodeName.toLowerCase() == "input"){
43		return true;
44	}else if(key == 13){
45		return false;
46	}
47	
48	var allow = false;
49	
50	// allow Ctrl+A
51	if((e.ctrlKey && key == 97 /* firefox */) || (e.ctrlKey && key == 65) /* opera */) return true;
52	// allow Ctrl+X (cut)
53	if((e.ctrlKey && key == 120 /* firefox */) || (e.ctrlKey && key == 88) /* opera */) return true;
54	// allow Ctrl+C (copy)
55	if((e.ctrlKey && key == 99 /* firefox */) || (e.ctrlKey && key == 67) /* opera */) return true;
56	// allow Ctrl+Z (undo)
57	if((e.ctrlKey && key == 122 /* firefox */) || (e.ctrlKey && key == 90) /* opera */) return true;
58	// allow or deny Ctrl+V (paste), Shift+Ins
59	if((e.ctrlKey && key == 118 /* firefox */) || (e.ctrlKey && key == 86) /* opera */
60	|| (e.shiftKey && key == 45)) return true;
61	
62	
63		/* number under fn keys */  /* Number pad keys */
64	if ((key >= 48 && key <= 57)) {
65		// A number was pressed but we need to check the min and max
66		allow = true;
67		
68		// check min
69		if (min !== undefined) {
70			if (parseInt(this.value) < parseInt(min)) {
71				e.preventDefault();
72				this.value = min;
73			}
74		}
75		
76		// check max
77		if (max !== undefined) {
78			if (parseInt(this.value) > parseInt(max)) {
79				e.preventDefault();
80				this.value = max;
81			}
82		}
83		
84	}else {
85				
86		var allowNeg = true;
87		
88		if (min != undefined && parseInt(min) >= 0) {
89			allowNeg = false;
90		}
91		
92		/* '-' only allowed at start */
93		if(key == 45 && this.value.length == 0 && allowNeg) {
94			return true;
95		}
96		
97		/* only one decimal separator allowed */
98		if(decimal && key == decimal.charCodeAt(0) && this.value.indexOf(decimal) != -1) {
99			allow = false;
100		}
101			
102		// check for other keys that have special purposes
103		if(
104			key != 8 /* backspace */ &&
105			key != 9 /* tab */ &&
106			key != 13 /* enter */ &&
107			key != 35 /* end */ &&
108			key != 36 /* home */ &&
109			key != 37 /* left */ &&
110			key != 39 /* right */ &&
111			key != 46 /* del */
112		){
113			allow = false;
114		}else {
115			
116			// for detecting special keys (listed above)
117			// IE does not support 'charCode' and ignores them in keypress anyway
118			if(typeof e.charCode != "undefined") {
119				// special keys have 'keyCode' and 'which' the same (e.g. backspace)
120				if(e.keyCode == e.which && e.which != 0) {
121					allow = true;
122					// . and delete share the same code, don't allow . (will be set to true later if it is the decimal point)
123					if(e.which == 46) allow = false;
124				}
125				// or keyCode != 0 and 'charCode'/'which' = 0
126				else if(e.keyCode != 0 && e.charCode == 0 && e.which == 0){
127					allow = true;
128				}
129			}
130		}
131		
132		// if key pressed is the decimal and it is not already in the field

133		if(decimal && key == decimal.charCodeAt(0)) {
134			if(this.value.indexOf(decimal) == -1) {
135				allow = true;
136			}else {
137				allow = false;
138			}
139		}
140	}
141		
142	return allow;
143}
144
145
146$.fn.numeric.keyup = function(e) {
147	var min = $(this).attr('min') || undefined;
148	var max = $(this).attr('max') || undefined;
149	var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
150
151	// if a number was pressed
152	if ((key >= 48 && key <= 57) || (key >= 96 && key <= 105)) {
153		
154		// check min
155		if (min !== undefined) {
156			if (parseInt(this.value) < parseInt(min)) {
157				e.preventDefault();
158				this.value = min;
159				return false;
160			}
161		}
162		
163		// check max
164		if (max !== undefined) {
165			if (parseInt(this.value) > parseInt(max)) {
166				e.preventDefault();
167				this.value = max;
168				return false;
169			}
170		}
171		
172	}
173	
174	return true;
175}
176
177$.fn.numeric.input = function(e)
178{
179	var val = $(this).val();
180	if(val && val.length > 0)
181	{
182		// get carat (cursor) position
183		var carat = $.fn.getSelectionStart(this);
184		var selectionEnd = $.fn.getSelectionEnd(this);
185		// get decimal character and determine if negatives are allowed
186		var decimal = $.data(this, "numeric.decimal");
187		var negative = $.data(this, "numeric.negative");
188		var decimalPlaces = $.data(this, "numeric.decimalPlaces");
189		// get an alternative decimal separator
190		var altDecimal = $.data(this, "numeric.altDecimal");
191
192		// prepend a 0 if necessary
193		if(decimal !== "" && decimal !== null)
194		{
195			// find decimal point
196			var dot = $.inArray(decimal, val.split(''));
197			// if dot at start, add 0 before
198			if(dot === 0)
199			{
200				this.value = "0" + val;
201				carat++;
202            			selectionEnd++;
203			}
204			// if dot at position 1, check if there is a - symbol before it
205			if(dot == 1 && val.charAt(0) == "-")
206			{
207				this.value = "-0" + val.substring(1);
208				carat++;
209            			selectionEnd++;
210			}
211			val = this.value;
212		}
213
214		// if pasted in, only allow the following characters
215		var validChars = [0,1,2,3,4,5,6,7,8,9,'-',decimal];
216		// get length of the value (to loop through)
217		var length = val.length;
218		// loop backwards (to prevent going out of bounds)
219		for(var i = length - 1; i >= 0; i--)
220		{
221			var ch = val.charAt(i);
222			// remove '-' if it is in the wrong place
223			if(i !== 0 && ch == "-")
224			{
225				val = val.substring(0, i) + val.substring(i + 1);
226			}
227			// remove character if it is at the start, a '-' and negatives aren't allowed
228			else if(i === 0 && !negative && ch == "-")
229			{
230				val = val.substring(1);
231			}
232			var validChar = false;
233			// loop through validChars
234			for(var j = 0; j < validChars.length; j++)
235			{
236				// if it is valid, break out the loop
237				if(ch == validChars[j])
238				{
239					validChar = true;
240					break;
241				}
242			}
243			// if not a valid character and character is altDecimal, replace 
244			if(!validChar && ch == altDecimal)
245			{
246				val = val.substring(0, i) + decimal + val.substring(i + 1);
247				validChar = true;
248			}
249			// if not a valid character, or a space, remove
250			if(!validChar || ch == " ")
251			{
252				val = val.substring(0, i) + val.substring(i + 1);
253			}
254		}
255		// remove extra decimal characters
256		var firstDecimal = $.inArray(decimal, val.split(''));
257		if(firstDecimal > 0)
258		{
259			for(var k = length - 1; k > firstDecimal; k--)
260			{
261				var chch = val.charAt(k);
262				// remove decimal character
263				if(chch == decimal)
264				{
265					val = val.substring(0, k) + val.substring(k + 1);
266				}
267			}
268		}
269
270        // remove extra decimal places
271        if(decimal && decimalPlaces > 0)
272        {
273            var dot = $.inArray(decimal, val.split(''));
274            if (dot >= 0)
275            {
276                val = val.substring(0, dot + decimalPlaces + 1);
277                selectionEnd = Math.min(val.length, selectionEnd);
278            }
279        }
280		// set the value and prevent the cursor moving to the end
281		this.value = val;
282		$.fn.setSelection(this, [carat, selectionEnd]);
283	}
284};
285
286$.fn.numeric.blur = function() {
287	var decimal = $.data(this, "numeric.decimal");
288	var callback = $.data(this, "numeric.callback");
289	var val = $(this).val();
290	
291	if(val != "") {
292		var re = new RegExp("^\\d+$|\\d*" + decimal + "\\d+");
293		if(!re.exec(val)) {
294			callback.apply(this);
295		}
296	}
297}
298
299$.fn.removeNumeric = function(){
300	$(document).off('input', this.selector, $.fn.numeric.input)
301	return this.data("numeric.decimal", null).data("numeric.callback", null).unbind("

301keypress", $.fn.numeric.keypress).unbind("keyup", $.fn.numeric.keyup).unbind("blur", $.fn.numeric.blur);
302}
303
304// Based on code from http://javascript.nwbox.com/cursor_position/ (Diego Perini <[email protected]>)
305$.fn.getSelectionStart = function(o)
306{
307	if(o.type === "number"){
308		return undefined;
309	}
310	else if (o.createTextRange && document.selection)
311	{
312        var r = document.selection.createRange().duplicate();
313        r.moveEnd('character', o.value.length);
314		if (r.text == '') return o.value.length;
315
316		return Math.max(0, o.value.lastIndexOf(r.text));
317	} else {
318        try { return o.selectionStart; }
319        catch(e) { return 0; }
320    }
321};
322
323// Based on code from http://javascript.nwbox.com/cursor_position/ (Diego Perini <[email protected]>)
324$.fn.getSelectionEnd = function(o)
325{
326	if(o.type === "number"){
327		return undefined;
328	}
329	else if (o.createTextRange && document.selection) {
330		var r = document.selection.createRange().duplicate()
331		r.moveStart('character', -o.value.length)
332		return r.text.length
333	} else return o.selectionEnd
334}
335
336// set the selection, o is the object (input), p is the position ([start, end] or just start)
337$.fn.setSelection = function(o, p)
338{
339	// if p is number, start and end are the same
340	if(typeof p == "number") { p = [p, p]; }
341	// only set if p is an array of length 2
342	if(p && p.constructor == Array && p.length == 2)
343	{
344		if(o.type === "number") {
345			o.focus();
346		}
347		else if (o.createTextRange)
348		{
349			var r = o.createTextRange();
350			r.collapse(true);
351			r.moveStart('character', p[0]);
352			r.moveEnd('character', p[1] - p[0]);
353			r.select();
354		}
355		else {
356            o.focus();
357            try{
358                if(o.setSelectionRange)
359                {
360                    o.setSelectionRange(p[0], p[1]);
361                }
362            } catch(e) {
363            }
364        }
365	}
366};
367
368})(jQuery);