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\u4e00.\u4e8b\u4ef6\u6d41<\/p>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

1.\u4e8b\u4ef6\u6355\u83b7 <\/p>\n\n\n\n

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\u89e6\u53d1\u65b9\u5f0f:\u5728DOM.addEventListener()\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u4f20\u5165true<\/strong> \u8fd9\u91cc\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u9ed8\u8ba4\u4e3afalse \u5373\u5192\u6ce1\u9636\u6bb5\u89e6\u53d1<\/p>\n\n\n\n

2.\u4e8b\u4ef6\u5192\u6ce1<\/p>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\u4e8c.\u4e8b\u4ef6\u89e3\u7ed1<\/p>\n\n\n\n

L0\u4e8b\u4ef6\u89e3\u7ed1 \u76f4\u63a5\u8bbe\u4e3anull\u5373\u53ef<\/p>\n\n\n\n

L2\u4e8b\u4ef6\u89e3\u7ed1 \u9700\u8981\u4f7f\u7528 DOM.removeEventListener(‘click’,fn)<\/strong>\u8bed\u53e5 <\/p>\n\n\n\n

\u533f\u540d\u51fd\u6570\u65e0\u6cd5\u89e3\u7ed1<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

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1.mouseenter\/mouseleave — >\u6ca1\u6709\u5192\u6ce1\u6548\u679c!!!<\/strong> (\u63a8\u8350)<\/p>\n\n\n\n

2.mouseover\/mouseout — >\u6709\u5192\u6ce1\u6548\u679c!<\/p>\n\n\n\n

\u4e0b\u9762\u901a\u8fc7\u7b80\u5355\u4f8b\u5b50\u89e3\u91ca\u5192\u6ce1\u6548\u679c\u662f\u600e\u4e48\u6837\u7684<\/p>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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2.clientWidth\u548cclientHeight <\/p>\n\n\n\n

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3.offsetWidth\u548coffsetHeight <\/p>\n\n\n\n

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\u52a0\u6cb9!!!<\/p>\n","protected":false},"excerpt":{"rendered":"

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