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| 1 | +'use strict' |
| 2 | + |
| 3 | +class FormCheck { |
| 4 | + constructor(form) { |
| 5 | + this.form = form; |
| 6 | + this.pattern = /^[+]*[(]{0,1}[0-9]{1,3}[)]{0,1}[-\s\./0-9]*$/g; |
| 7 | + this.errorClass = form.getAttribute("wt-formcheck-class"); |
| 8 | + this.submitMessage = form.getAttribute("wt-formcheck-message"); |
| 9 | + this.requiredFields = form.querySelectorAll('[wt-formcheck-type="required"]'); |
| 10 | + this.errorElements = form.querySelectorAll('[wt-formcheck-type="error"]'); |
| 11 | + this.submitButton = form.querySelector('[wt-formcheck-type="submit"]'); |
| 12 | + this.defaultSubmitText = this.submitButton.textContent; |
| 13 | + this.resetButton = form.querySelector('[wt-formcheck-element="reset"]'); |
| 14 | + this.requiredFieldsAndCheckboxes = form.querySelectorAll('[wt-formcheck-type="required"], [type="checkbox"]'); |
| 15 | + this.formErrors = false; |
| 16 | + |
| 17 | + this.init(); |
| 18 | + } |
| 19 | + |
| 20 | + init() { |
| 21 | + for (let element of this.errorElements) { |
| 22 | + element.style.display = 'none'; |
| 23 | + } |
| 24 | + |
| 25 | + for (let field of this.requiredFields) { |
| 26 | + field.classList.remove(`${this.errorClass}`); |
| 27 | + } |
| 28 | + |
| 29 | + for (let field of this.requiredFieldsAndCheckboxes) { |
| 30 | + field.addEventListener('keypress', (e) => this.clearError(e)); |
| 31 | + field.addEventListener('blur', (e) => this.clearError(e)); |
| 32 | + } |
| 33 | + |
| 34 | + this.submitButton.addEventListener('click', (e) => this.validateAndSubmit(e)); |
| 35 | + |
| 36 | + if (this.resetButton) { |
| 37 | + this.resetButton.addEventListener('click', (e) => this.clearForm(e)); |
| 38 | + } |
| 39 | + } |
| 40 | + |
| 41 | + clearError(e) { |
| 42 | + const target = e.target; |
| 43 | + if (this.errorClass) target.classList.remove(`${this.errorClass}`); |
| 44 | + const errorElement = target.parentNode.querySelector('[wt-formcheck-type="error"]'); |
| 45 | + if (errorElement) { |
| 46 | + errorElement.style.display = 'none'; |
| 47 | + } |
| 48 | + this.formErrors = false; |
| 49 | + } |
| 50 | + |
| 51 | + fieldError(field) { |
| 52 | + const errorElement = field.parentNode.querySelector('[wt-formcheck-type="error"]'); |
| 53 | + if (errorElement) { |
| 54 | + errorElement.style.display = 'block'; |
| 55 | + } |
| 56 | + field.classList.add(`${this.errorClass}`); |
| 57 | + this.formErrors = true; |
| 58 | + } |
| 59 | + |
| 60 | + validateAndSubmit(e) { |
| 61 | + this.formErrors = false; |
| 62 | + |
| 63 | + for (let field of this.requiredFields) { |
| 64 | + const fieldType = field.getAttribute('type'); |
| 65 | + const fieldValue = field.value.trim(); |
| 66 | + |
| 67 | + if (fieldType === 'checkbox' && !field.checked) { |
| 68 | + this.fieldError(field); |
| 69 | + } else if (fieldValue === '') { |
| 70 | + this.fieldError(field); |
| 71 | + } else if (fieldType === 'email' && (!this.isValidEmail(fieldValue))) { |
| 72 | + this.fieldError(field); |
| 73 | + } else if (fieldType === 'number' && (fieldValue === '' || isNaN(fieldValue))) { |
| 74 | + this.fieldError(field); |
| 75 | + } else if (fieldType === 'tel' && !field.value.match(this.pattern)) { |
| 76 | + this.fieldError(field); |
| 77 | + } |
| 78 | + } |
| 79 | + |
| 80 | + if (this.formErrors) { |
| 81 | + e.preventDefault(); |
| 82 | + } else { |
| 83 | + this.submitButton.textContent = `${this.submitMessage}`; |
| 84 | + this.form.submit(); |
| 85 | + } |
| 86 | + } |
| 87 | + |
| 88 | + isValidEmail(email) { |
| 89 | + const emailPattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/; |
| 90 | + return emailPattern.test(email); |
| 91 | + } |
| 92 | + |
| 93 | + clearForm(e) { |
| 94 | + e.preventDefault(); |
| 95 | + for (let element of this.errorElements) { |
| 96 | + element.style.display = 'none'; |
| 97 | + } |
| 98 | + |
| 99 | + for (let field of this.requiredFields) { |
| 100 | + field.classList.remove(`${this.errorClass}`); |
| 101 | + } |
| 102 | + |
| 103 | + this.form.reset(); |
| 104 | + this.submitButton.textContent = `${this.defaultSubmitText}`; |
| 105 | + } |
| 106 | +} |
| 107 | + |
| 108 | +document.addEventListener('DOMContentLoaded', () => { |
| 109 | + const forms = document.querySelectorAll('[wt-formcheck-element="form"]'); |
| 110 | + forms.forEach(form => new FormCheck(form)); |
| 111 | +}); |
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