JavaScript ã®ä¾å¤ "null (or undefined) has no properties" ã¯ã null ããã³ undefined ã®ããããã£ã«ã¢ã¯ã»ã¹ãããã¨ããã¨ãã«çºçãã¾ãããããã¯ããããã£ãä½ãæã¡ã¾ããã
TypeError: Unable to get property {x} of undefined or null reference (Edge)
TypeError: null has no properties (Firefox)
TypeError: undefined has no properties (Firefox)
null 㨠undefined ã«ãã¢ã¯ã»ã¹å¯è½ãªããããã£ã¯ããã¾ããã
null.foo;
// TypeError: null has no properties
undefined.bar;
// TypeError: undefined has no properties
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