Programmer Think

1. Find elements: (1). There are 4 kinds of element objects that can be obtained directly without searching: document.documentElement - document.head - document.body - document.forms[i] - (2). If you have obtained an element object, when you find the element object around you, you can use the search by the relationship between nodes: 2 ...

Browser architectureJavaScript runs in the browser, BOM is the bridge between JavaScript code and browser, and DOM is used to operate various tag elements.BOM includes window, history, location, documentDOM includes Document (whole Document), Element (label Element), CharacterData (character data) and Attr (attribute), which can be further divi ...

DOM and Bom DOMBOMDocument object modelBrowser object modelTreat the document as a * * * object***Treat the browser as a * * * object***The top-level object of DOM is DocumentThe top-level object of BOM is windowDOM is mainly used to manipulate page elementsBOM s are objects that interact with browser windowsDOM is the W3C Standard Specificati ...