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This article mainly introduces "how to use the parents () method in jquery". In the daily operation, I believe that many people have doubts about how to use the parents () method in jquery. The editor has consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use the parents () method in jquery". Next, please follow the editor to study!

In jquery, the parents () method is used to get the ancestor element of each element in the current matching element collection with the syntax of "$(selector) .ancestor (filter)", and the parameter "filter" is optional to specify a selector expression that narrows the search for ancestral elements.

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

In jquery, the parents () method is used to get the ancestor element of each element in the current set of matching elements.

Ancestors were fathers, grandfathers, great-grandfathers, and so on.

DOM tree: this method traverses the ancestors of the DOM element up from the parent element to all paths of the document root element ().

Grammar

The $(selector) .describe (filter) parameter description filter is optional. Specifies a selector expression that narrows the search for ancestral elements.

Note: if you want to return multiple ancestors, separate each expression with a comma.

Note: if the filter parameter is empty, this method selects all ancestors in the element collection from all paths directly from the parent element to the sum. So it is useful to pass a selector expression that narrows down the search results.

Example 1: all ancestor elements returned:

.ancestors * {display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px;} $(document) .ready (function () {$("span"). Parents (). Css ({"color": "red", "border": "2px solid red"});}) Body (great-grandparent node) div (great-grandfather node) ul (grandfather node) li (direct parent node) span

Example 2: narrow the search

.ancestors * {display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px;} $(document) .ready (function () {$("span"). Parents ("ul"). Css ({"color": "red", "border": "2px solid red"});}) Body (great-grandparent node) div (great-grandfather node) ul (grandfather node) li (direct parent node) span

At this point, the study on "how to use the parents () method in jquery" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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