Simple selector, easy to operate!
In jQuery, selectors are a powerful feature that allow us to select elements on the page in different ways. However, sometimes we may encounter a common problem: the selector does not work properly when it contains spaces. This article will introduce you to this problem and provide a solution.
Problem analysis:
When we use selectors, we may use spaces to indicate hierarchical relationships between elements. For example, to select a child element under a parent element, you can use .parent .child. However, when we use spaces in the selector, jQuery interprets the selector as looking up the hierarchy rather than selecting child elements within the parent element.
solution:
To solve this problem, we can use different selectors or use the methods provided by jQuery to achieve our needs. Here are a few common solutions.
- Use the direct child selector (child selector): If you want to select a direct child element under a parent element, you can use
>the symbol to express it. For example, to select.parentthe direct child elements under an element.child, you can use.parent > .child.
$(".parent > .child").