https://radiotherapy.in/lib/js/form-validation.js

1//<script type="text/javascript">
2
3function isEmpty(elem, helperMsg){
4	if(elem.value.length == 0){
5		alert(helperMsg);
6		//elem.style.background = 'Yellow'; 
7		elem.className = 'alert';
8		elem.focus(); // set the focus to this input
9		return false;
10	}else{
11		//elem.style.background = 'White'; 
12		elem.className = 'norm';
13		return true;
14	}
15}
16
17function isZero(elem, helperMsg){
18	var elemValue = parseInt(elem.value);
19	if(elemValue == 0){
20		alert(helperMsg);
21		//elem.style.background = 'Yellow'; 
22		elem.className = 'alert';
23		elem.focus(); // set the focus to this input
24		return false;
25	}else{
26		//elem.style.background = 'White'; 
27		elem.className = 'norm';
28		return true;
29	}
30}
31
32function isNumeric(elem, helperMsg){
33	var numericExpression = /^[0-9]+$/;
34	if(elem.value.match(numericExpression)){
35		//elem.style.background = 'White'; 
36		elem.className = 'norm';
37		return true;
38	}else{
39		alert(helperMsg);
40		elem.focus();
41		//elem.style.background = 'Yellow'; 
42		elem.className = 'alert';
43		return false;
44	}
45}
46
47function isAlphabet(elem, helperMsg){
48	var alphaExp = /^[a-zA-Z]+$/;
49	if(elem.value.match(alphaExp)){
50		//elem.style.background = 'White'; 
51		elem.className = 'norm';
52		return true;
53	}else{
54		alert(helperMsg);
55		//elem.style.background = 'Yellow'; 
56		elem.className = 'alert';
57		elem.focus();
58		return false;
59	}
60}
61
62function isAlphanumeric(elem, helperMsg){
63	var alphaExp = /^[0-9a-zA-Z]+$/;
64	if(elem.value.match(alphaExp)){
65		//elem.style.background = 'White'; 
66		elem.className = 'norm';
67		return true;
68	}else{
69		alert(helperMsg);
70		//elem.style.background = 'Yellow'; 
71		elem.className = 'alert';
72		elem.focus();
73		return false;
74	}
75}
76
77function stringPosRestriction(elem, first_index,last_index, check_string, helperMsg){
78	var uInput = elem.value;
79	if(uInput.substring(first_index,last_index) == check_string){
80		//elem.style.background = 'White'; 
81		elem.className = 'norm';
82		return true;
83	}else{
84		alert(helperMsg);
85		//elem.style.background = 'Yellow'; 
86		elem.className = 'alert';
87		elem.focus();
88		return false;
89	}
90}
91
92function stringPosAllowed(elem, first_index,last_index, check_string, helperMsg){
93	var uInput = elem.value;
94	if(uInput.substring(first_index,last_index) == check_string){
95		alert(check_string + " is not allowed at the given position in " + helperMsg);
96		//elem.style.background = 'Yellow'; 
97		elem.className = 'alert';
98		elem.focus();
99		return false;
100	}else{
101		//elem.style.background = 'White'; 
102		elem.className = 'norm';
103		return true;
104	}
105}
106
107function lengthRestriction(elem, min, max, helperMsg){
108	var uInput = elem.value;
109	if(uInput.length >= min && uInput.length <= max){
110		//elem.style.background = 'White'; 
111		elem.className = 'norm';
112		return true;
113	}else{
114		if (min == max) {
115			alert("Please enter valid " + max + " digit " + helperMsg);
116		}else{
117			alert("Please enter valid " + helperMsg + " between " + min + " and " +max+ " characters");
118		}
119		//elem.style.background = 'Yellow'; 
120		elem.className = 'alert';
121		elem.focus();
122		return false;
123	}
124}
125
126function madeSelection(elem, helperMsg){
127	var uInput = elem.options[elem.selectedIndex].value
128	if(uInput == ""){
129		alert("Please Choose " + helperMsg);
130		elem.focus();
131		//elem.style.background = 'Yellow'; 
132		elem.className = 'alert';
133		return false;
134	}else{
135		//elem.style.background = 'White'; 
136		elem.className = 'norm';
137		return true;
138	}
139}
140
141function emailValidator(elem, helperMsg){
142//	return true;	// for localhost testing
143	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
144	if(elem.value.match(emailExp)){
145		//elem.style.background = 'White'; 
146		elem.className = 'norm';
147		return true;
148	}else{
149		alert(helperMsg);
150		//elem.style.background = 'Yellow'; 
151		elem.className = 'alert';
152		elem.focus();
153		return false;
154	}
155}
156
157function stringCompare(elem, elemv, helperMsg) {
158	var uInput = elem.value;
159	var uInputv = elemv.value;
160	if(elem.value.length == 0 || (uInput.length == uInputv.length && uInput == uInputv)){
161		//elem.style.background = 'White'; 
162		elem.className = 'norm';
163		return true;
164	}else{
165		alert(helperMsg);
166		//elem.style.background = 'Yellow'; 
167		elem.className = 'alert';
168		elem.focus();
169		return false;

170	}
171}
172
173function checkCheckBox(elem, helperMsg){
174//if (formname.formelement.checked == false )
175	if (elem.checked == true) {
176		//elem.style.background = 'White'; 
177		elem.className = 'norm';
178		return true;
179	}else{
180		alert(helperMsg);
181		//elem.style.background = 'Yellow'; 
182		elem.className = 'alert';
183		elem.focus();
184		return false;
185	}
186}
187//</script>