从接口定义可以看到Document、DocumentFragment、Element都实现了NodeSelector接口。即这三种类型的元素都拥有者两个方法。querySelector和querySelectorAll的参数须是符合css selector的字符串。不同的是querySelector返回的是一个对象,querySelectorAll返回的一个集合 (NodeList)。 可以500 ...
小程序 使用selectorQuery.selectAll(selector) 小程序 使用selectorQuery.selectAll(selector)获取在当前页面下选择匹配选择器 selector 的所有 ...
--> So this method is used in cases when you want to select the 1st elements our of many or if you want to select a particular element or a uinque element Note when we are using queryselector and we ...
querySelector es un método que devuelve el primer elemento que coincide con un selector CSS especificado en el documento. Este método puede seleccionar elementos por su clase, id, etiqueta, atributos, ...
The complete source code, a demo of the file selection feature implementation, and a detailed explanation of the differences between NodeList and HTMLCollection are available in the following blog ...