10 examples of 'jquery validate form before submit' in JavaScript

177
function validateForm() {
178
  if ($("input#username").val() && $("input#password").val()) {
179
    return true;
180
  } else {
181
    return false;
182
  }
183
}

203
function validateForm () {
204
    var valid = true;        /* "true" is all good news */
205
    if ($.fn.validate === undefined)
206
        return valid;
207
208
    var validator = $top.validate();
209
210
    // Look at the inputs for each non-hidden step in our form
211
    $("div.ui-dform-step:not(:hidden) input", $top).each(function () {
212
        var tvalid = validator.element(this);
213
        if (tvalid === undefined) // Agnostic?  Force a value!
214
            tvalid = true;
215
        valid &= tvalid;
216
        $.dbgpr("validateForm:", this.name, ":", tvalid);
217
    })
218
219
    $.dbgpr("validateForm:", this.name, " is ", valid);
220
    return valid;
221
}

85
function validate(form) {
86
	var i = 0;
87
	jQuery("input.required").each(function() {
88
		if(jQuery(this).val() == '') {
89
			jQuery(this).focus();
90
			return false;
91
		}
92
		i++;
93
	});
94
	if(i < jQuery("input.required").length) {
95
		return false;
96
	} else {
97
		return true;
98
	}
99
}

86
function validate(form) {
87
	if(jQuery("#access_id").val() == '') {
88
		jQuery("#access_id").parent().parent().addClass('has-warning');
89
		return false;
90
	} else if(jQuery("#access_key").val() == '') {
91
		jQuery("#access_key").parent().parent().addClass('has-warning');
92
		return false;
93
	} else if(jQuery("#bucket").val() == '') {
94
		jQuery("#bucket").parent().parent().addClass('has-warning');
95
		return false;
96
	} else if(jQuery("#hostname").val() == '') {
97
		jQuery("#hostname").parent().parent().addClass('has-warning');
98
		return false;
99
	}
100
	return true;
101
}

8
function validate_form_inputs( submittedForm ) {
9
10
	var goodToGo = true;
11
	var cntr = 1;
12
	
13
	$( submittedForm ).find('.required').each( function( index ) {
14
		if( $(this).val() === '' || $(this).val() === 0 ) {
15
			$(this).addClass('requires-value').siblings( '.validation-notice-dv' ).fadeIn();
16
			goodToGo = false;
17
		}
18
		$(this).on( 'change', function() {
19
			if( $(this).val() !== '' || $(this).val() !== 0 ) {
20
				$(this).removeClass('requires-value').siblings( '.validation-notice-dv' ).fadeOut('fast');
21
			}
22
		});
23
		if ( cntr === 1 ) {
24
			var thisPos = $(this).offset();
25
			$(window).scrollTop( thisPos.top - 200 );
26
		}
27
		cntr++;
28
	});
29
	return goodToGo;
30
}

34
function MySubmitForm() {
35
	if (passThroughFormSubmit) {
36
		return true;
37
	}
38
	Asirra_CheckIfHuman(HumanCheckComplete);
39
	return false;
40
}

73
function verifyForm() {
74
    var result = true;
75
76
    $("#contact-form > .form-group").each( (i, item) => {
77
        var test = $(item).attr('class');
78
        result = (verifyFormGroup($(item))) ? result : false;
79
    });
80
81
    return result;
82
}

646
function validate($form) {
647
            values = {};
648
            $.each($form.serializeArray(), function(i, field) {
649
                values[field.name] = field.value;
650
            });
651
            values['_token'] = CSRFToken;
652
653
            $.ajax({
654
                url: validationUrl,
655
                method: 'POST',
656
                data: values,
657
                success: function(data) {
658
                    $form.submit();
659
                },
660
                error: function(err) {
661
					console.log(err);
662
                    $('.error-message').text('');
663
                    $('.text-input, .text-area, .chosen-container').removeClass('error');
664
665
                    $.each(err.responseJSON.errors, function(fieldName, errors) {
666
                        var $field = $('#'+fieldName);
667
                        $field.addClass('error');
668
                        $field.siblings('.error-message').text(errors[0]);
669
                    });
670
                }
671
            });
672
        }

19
function submitFormPost() {
20
		var type = $('type').value;
21
		
22
		if (type == 'image' || type == 'audio') {
23
			return $('formPost').submit();
24
		}
25
		
26
        form = new ValidateForm($('formPost'),"admin/post/verify");
27
        form.errorElem = $('error_messages');
28
        form.successCallback = function() {callbackPostSuccess();};
29
        return form.submit();
30
}

56
function validateForm () {
57
	if (checkField('#name', 'Name')  &&
58
	    checkField('#email', 'Email')  &&
59
	    checkEmail('#email')  &&
60
	    checkField('#message', 'Message')) {
61
		return true;
62
	}
63
	return false;
64
}