--- title: Change Question Title Colors product: PDF Generator description: Learn how to add custom visual elements to your question titles in PDF forms. Our free demo for JavaScript will show you how to change the color of question titles to improve their visibility and enhance the overall appearance of your PDF forms. framework: Vanilla JS source: https://surveyjs.io/pdf-generator/examples/how-to-customize-question-title-colors-in-pdf-form/vanillajs index: https://surveyjs.io/pdf-generator/examples/overview.md --- # Change Question Title Colors (Vanilla JS) This demo example shows how to change the color of question titles in a generated PDF form. This feature is especially useful for quiz and test results—you can visually indicate correctly and incorrectly answered questions using color. To generate a PDF form with applied customizations, answer the quiz questions and click the "Download PDF" or "Preview PDF" button. ## Customize Question Titles To customize question title colors, handle the [`onGetQuestionStyle`](https://surveyjs.io/pdf-generator/documentation/api-reference/surveypdf#onGetQuestionStyle) event. Within the event handler, use the `options.style` configuration object to obtain and customize styles applied to an individual form field. To apply a custom color to a question title, modify the `options.style.title.fontColor` property. You can specify colors directly (for example, using hex values like `"#00ff00"` for green and `"#ff0000"` for red), or obtain them from the current survey theme if you prefer consistency with other styling. To obtain these colors, use the `options.getColorVariable` function. ## Customize Choice Options To modify the appearance of a choice's mark and label, handle the [`onGetItemStyle`](https://surveyjs.io/pdf-generator/documentation/api-reference/surveypdf#onGetItemStyle) event. Within the event handler, use the `options.style` configuration object to modify the appearance of a choice item. Refer to the code listing for more information. ## Files ### `public/index.html` ```html
``` ### `src/index.css` ```css /* You can add your custom CSS here. */ ``` ### `src/index.js` ```js import { Model } from "survey-core"; import "survey-js-ui"; import { SurveyPDF } from "survey-pdf"; import "survey-core/survey-core.min.css"; import "./index.css"; import { json } from "./json"; function createSurveyPdfModel (surveyModel) { const surveyPDF = new SurveyPDF(json); if (surveyModel) { surveyPDF.data = surveyModel.data; surveyPDF.locale = surveyModel.locale; } surveyPDF.readOnly = true; surveyPDF.onGetQuestionStyle.add((_, options) => { const question = options.question; const style = options.style; const correctColor = options.getColorVariable("--sjs2-color-fg-positive-primary"); const incorrectColor = options.getColorVariable("--sjs2-color-fg-alert-primary"); if (question.correctAnswer !== undefined && question.correctAnswer !== null) { const isCorrect = question.isAnswerCorrect(); style.title.fontColor = isCorrect ? correctColor : incorrectColor; } }); surveyPDF.onGetItemStyle.add((_, options) => { const question = options.question; const item = options.item; const style = options.style; const correctColor = options.getColorVariable("--sjs2-color-fg-positive-primary"); const incorrectColor = options.getColorVariable("--sjs2-color-fg-alert-primary"); const correctCheckMark = "4"; const incorrectCheckMark = "6"; if (question.correctAnswer !== undefined && question.correctAnswer !== null) { const isItemSelected = question.isItemSelected(item); const isItemCorrect = item.value === question.correctAnswer; const getColor = () => isItemCorrect ? correctColor : incorrectColor; const getCheckMark = () => isItemCorrect ? correctCheckMark : incorrectCheckMark; if (isItemSelected) { style.choiceText.fontColor = getColor(); style.input = style.input || {}; style.input.fontColor = getColor(); style.input.borderColor = getColor(); style.input.checkMark = getCheckMark(); } else if (isItemCorrect) { style.choiceText.fontColor = correctColor; style.input.borderColor = correctColor; } style.input.backgroundColor = options.getColorVariable("--sjs2-color-component-panel-default-bg"); } }); return surveyPDF; } function saveSurveyToPdf (filename, surveyModel) { const pdfDoc = createSurveyPdfModel(surveyModel); if (!pdfDoc) return; pdfDoc.save(filename); } const previewDiv = document.getElementById("pdf-preview"); const previewEmbed = document.getElementById("pdf-preview-frame"); let pdfBlobUrl; function showPdfPreview(surveyModel) { if (!previewDiv || !previewEmbed) return; const pdfDoc = createSurveyPdfModel(surveyModel); if (!pdfDoc) return; pdfDoc.raw("blob").then((blob) => { if (pdfBlobUrl) { URL.revokeObjectURL(pdfBlobUrl); } pdfBlobUrl = URL.createObjectURL(blob); previewEmbed.setAttribute("src", pdfBlobUrl); previewDiv.style.display = "block"; }); } function previewPdf(surveyModel) { if (!previewDiv) return; if (previewDiv.style.display !== "none") { previewDiv.style.display = "none"; return; } showPdfPreview(surveyModel); } const survey = new Model(json); survey.showCompleteButton = false; survey.navigationButtonsLocation = "topBottom"; survey.addNavigationItem({ id: "survey_save_as_file", title: "Download PDF", action: () => { saveSurveyToPdf("surveyResult.pdf", survey); } }); survey.addNavigationItem({ id: "survey_pdf_preview", title: "Preview PDF", visible: window.navigator.pdfViewerEnabled, action: () => { previewPdf(survey); } }); survey.data = { "username": "John Doe", "civilwar": "1861-1865", "libertyordeath": "James Madison", "magnacarta": "The foundation of the British parliamentary system", }; survey.render(document.getElementById("surveyElement")); ``` ### `src/json.js` ```js export const json = { "title": "American History", "description": "You are about to begin a quiz on American history. Enter your name in the field provided, then respond to the questions below.", "headerView": "advanced", "pages": [ { "elements": [ { "type": "text", "name": "username", "title": "Your Name", "isRequired": true, "maxLength": 25 }, { "type": "radiogroup", "name": "civilwar", "title": "When was the American Civil War?", "choices": [ "1796-1803", "1810-1814", "1861-1865", "1939-1945" ], "correctAnswer": "1861-1865", "isRequired": true }, { "type": "radiogroup", "name": "libertyordeath", "title": "Whose quote is this: \"Give me liberty, or give me death\"?", "choicesOrder": "random", "choices": [ "John Hancock", "James Madison", "Patrick Henry", "Samuel Adams" ], "correctAnswer": "Patrick Henry", "isRequired": true }, { "type": "radiogroup", "name": "magnacarta", "title": "What is Magna Carta?", "choicesOrder": "random", "choices": [ "The foundation of the British parliamentary system", "The Great Seal of the monarchs of England", "The French Declaration of the Rights of Man", "The charter signed by the Pilgrims on the Mayflower" ], "correctAnswer": "The foundation of the British parliamentary system", "isRequired": true } ] } ], "completedHtml": "

You got {correctAnswers} out of {questionCount} correct answers.

", "completedHtmlOnCondition": [ { "expression": "{correctAnswers} == 0", "html": "

Unfortunately, none of your answers is correct. Please try again.

" }, { "expression": "{correctAnswers} == {questionCount}", "html": "

Congratulations! You answered all the questions correctly!

" } ] }; ``` ### `package.json` ```json { "dependencies": { "survey-core": "latest", "survey-js-ui": "latest", "survey-pdf": "latest" } } ``` ## Other Frameworks - [Angular](https://surveyjs.io/pdf-generator/examples/how-to-customize-question-title-colors-in-pdf-form/angular.md) - [React](https://surveyjs.io/pdf-generator/examples/how-to-customize-question-title-colors-in-pdf-form/reactjs.md) - [Vue 3](https://surveyjs.io/pdf-generator/examples/how-to-customize-question-title-colors-in-pdf-form/vue3js.md) - [jQuery](https://surveyjs.io/pdf-generator/examples/how-to-customize-question-title-colors-in-pdf-form/jquery.md)