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This is a legacy method that has been superseded by `insertRule()`, although it is supported by all modern browser engines.
28 lines
1.2 KiB
HTML
28 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<script>
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test(() => {
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const sheet = new CSSStyleSheet();
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println(`addValue() return value: ${sheet.addRule()}`);
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println(`Rule count after calling addRule() with no arguments: ${sheet.cssRules.length}`);
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println(`Rule text: ${sheet.cssRules[0].cssText}`);
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sheet.addRule(".test", "font-size: 14px");
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println(`Rule count after calling addRule with no index: ${sheet.cssRules.length}`);
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println(`Second rule text: ${sheet.cssRules[1].cssText}`);
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sheet.addRule(".test", "padding: 100px", 0);
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println(`Rule count after calling addRule with index 0: ${sheet.cssRules.length}`);
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println(`Rule text: ${sheet.cssRules[0].cssText}`);
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try {
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sheet.addRule(".test", "padding: 10px", -1);
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println("FAIL");
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} catch (e) {
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println(`Exception thrown when given a negative index: ${e.name}`);
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}
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try {
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sheet.addRule(".test", "padding: 10px", 4);
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println("FAIL");
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} catch (e) {
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println(`Exception thrown when index out of range: ${e.name}`);
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}
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});
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</script>
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