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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                javaScript是由幾部分組成 <br/> <br/> ECMAScript 簡稱【ES】,他是由歐洲計算機協會,大概每年的六月中旬定制的語法規范。 <br/> <br/> DOM:全稱【document object model】 即為文檔對象模型 <br/> BOM:全稱【browser object model】 即為瀏覽器對象模型 節點樹 概述:節點即為標簽 節點之間的關系,我們稱之為節點樹 DOM document object model :文檔對象模型,可以理解為是整個節點樹最外層的根元素。 ![](https://img.kancloud.cn/d8/31/d8315b6565889352abe4600c854ead17_849x590.png)
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