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	 3ea318ca8b
			
		
	
	
		3ea318ca8b
		
	
	
	
	
		
			
			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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