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This method behaves the same as `CSSStyleSheet.replace()` but the operation is performed synchronously.
57 lines
1.7 KiB
HTML
57 lines
1.7 KiB
HTML
<!DOCTYPE html>
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<style>
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.test {
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font-size: 12px;
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}
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</style>
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<script src="../include.js"></script>
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<script>
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test(() => {
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const newStyle = `
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.test {
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font-size: 14px;
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}
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.test2 {
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font-size: 16px;
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}`;
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const newStyle2 = `.test {
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padding: 100px;
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}`;
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const nonConstructedSheet = document.styleSheets[0];
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try {
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nonConstructedSheet.replaceSync(newStyle);
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println("FAIL");
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} catch (e) {
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println(`Exception thrown when calling replaceSync() on non-constructed stylesheet: ${e.name}`);
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}
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const sheet = new CSSStyleSheet();
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const cssRules = sheet.cssRules;
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sheet.replaceSync(newStyle);
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println(`Number of CSS rules after replaceSync(): ${sheet.cssRules.length}`);
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for (const rule of sheet.cssRules) {
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println(`Rule: ${rule.cssText}`);
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}
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const cssRulesAfterReplaceSync = sheet.cssRules;
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println(`cssRules returns the same object before and after replaceSync(): ${cssRules === cssRulesAfterReplaceSync}`);
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const importRule = `@import url("test.css");`;
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sheet.replaceSync(`${newStyle2} ${importRule}`);
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println(`@import rule should be not appear below:`);
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for (const rule of sheet.cssRules) {
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println(`Rule: ${rule.cssText}`);
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}
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const unresolvedPromise = sheet.replace(newStyle);
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try {
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sheet.replaceSync(newStyle);
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println("FAIL");
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} catch (e) {
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println(`Calling replaceSync() while the disallow modification flag set throws: ${e.name}`);
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}
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});
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</script>
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