// Example: Highlight All Instances of a String in a PDF using Highlight Annotations
window.onload = function () {
const viewer = new DsPdfViewer("#viewer", {
workerSrc: "/document-solutions/javascript-pdf-viewer/demos/product-bundles/build/dspdfviewer.worker.js",
supportApi: getSupportApiSettings()
});
viewer.addDefaultPanels(); // Add default viewer panels
viewer.addAnnotationEditorPanel(); // Add annotation editor panel
viewer.addFormEditorPanel(); // Add form editor panel
var pdf = "/document-solutions/javascript-pdf-viewer/demos/product-bundles/assets/pdf/wetlands.pdf";
loadPdf(viewer, pdf, "wetlands"); // Load the PDF and search for the text "wetlands"
}
// Load the PDF, find occurrences of the search text, and add highlight annotations:
async function loadPdf(viewer, pdf, searchText) {
await viewer.open(pdf); // Open the PDF document
// Adjust search options as needed:
var findOptions = {
Text: searchText,
MatchCase: true, // Match case exactly
WholeWord: true, // Match whole words only
StartsWith: false, // Do not limit to words starting with the search text
EndsWith: false, // Do not limit to words ending with the search text
Wildcards: false, // Do not use wildcards in the search
Proximity: false, // Do not limit search based on word proximity
SearchBackward: false, // Search forward in the document
HighlightAll: false // Do not highlight all occurrences automatically
};
var searchIterator = await viewer.searcher.search(findOptions); // Start the search
var searchResult = await searchIterator.next(); // Get the first search result
var searchResults = [];
while (!searchResult.done) {
searchResults.push(searchResult); // Add the search result to the array
searchResult = await searchIterator.next(); // Get the next search result
}
// Add a highlight annotation for each search result:
createHighlights(viewer, searchResults);
}
// Create highlight annotations for search results:
async function createHighlights(viewer, searchResults) {
for (let i = 0; i < searchResults.length; i++) {
const searchResultValue = searchResults[i].value;
await viewer.addAnnotation(searchResultValue.PageIndex, {
annotationType: 9, // AnnotationTypeCode.HIGHLIGHT
subtype: "Highlight",
color: [255, 63, 127], // Highlight color (RGB)
rect: searchResultValue.coordinates.outerRect // Rectangle coordinates of the text
});
}
viewer.repaint(); // Repaint the viewer to display the annotations
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Add Markup Annotations in Code</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="./src/styles.css">
<script src="/document-solutions/javascript-pdf-viewer/demos/product-bundles/build/dspdfviewer.js"></script>
<script src="/document-solutions/javascript-pdf-viewer/demos/product-bundles/build/wasmSupportApi.js"></script>
<script src="/document-solutions/javascript-pdf-viewer/demos/resource/js/init.js"></script>
<script src="src/app.js"></script>
</head>
<body>
<div id="viewer"></div>
</body>
</html>
#viewer {
height: 100%;
}
body {
overflow: hidden;
}
