在我以往的认知中,我觉得firstChild不就是指向某个dom节点的第一个子节点嘛!这种认知成立的前提是该节点没有被appendChild引用,当结合appendChild使用时,就变得很有趣了。 为了说明上面这个观点,我做了如下例子:将app元素的第一个子节点插入到foot中,插入前firstChild指向app中的input元素,插入后再访问firstChild却指...
The TreeWalker.firstChild() method moves the current Node to the first visible child of the current node, and returns the found child. It also moves the current node to this child. If no such child exists, returns null and the current node is not changed. Syntax node = treeWalker.firstCh...
一个POJO持久化以后就是PO直接用它传递、传递过程中就是DTO直接用来对应表示层就是VO DAO：data acces...
It’s worth noting that thesetStartandsetEndmethods work differently if the node passed as the first argument is a text node or not. For text nodes, the offset corresponds to the number of characters within the node. For other nodes, the offset corresponds to the number of child nodes wit...
day03_js学习笔记_03_js的事件、js的BOM、js的DOM === ===
return require('child_process').execSync(cmd).toString().trim() } var versionRequirements = [ { name: 'node', currentVersion: semver.clean(process.version), versionRequirement: packageConfig.engines.node }, ] if (shell.which('npm')) { versionRequirements.push({ name: 'npm', currentVersion...
underlyingmarkup taskwe ll add initializationmethod ourplugin which widgetrequires Engage Thrusters First allwe should add followingcode directly after Upconstructor function uploaderjs Up prototype init function var widget stringswidget config strings container article class up heading header appendTo containe...
{ border-right: 1px solid #AD66D5; border-bottom: none; display: inline-block; padding: 0 5px; font-size: 1.6em; } nav li:last-child a { border-right: none; } } @media (min-width: 600px) { html { background: #eee; height: 100%; } body { width: 600px; height: inherit...