How to use the jQuery basic selector

This article mainly shows you "how to use jQuery basic selector", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use jQuery basic selector" this article.

Form input: query all input elements under form, including descendant relationships

Form > input: query all input elements under form, with paternity and no descendant relationship

Form+input: query the first input element at the same level as form, which is sibling

Form~input: query all input elements at the same level as form, which is sibling

/ / 1) find the number of all input elements under the form form / / alert ($("form input"). Size ()); / 2) find the number of all child input elements under the form form / / alert ($("form > input"). Size ()); / / 3) find the value attribute value / / alert ($("form+input"). Val ()) of the first input element of the form form sibling / / 4) find the number of input elements at the same level as the form form alert ($("form~input"). Size ()); the above is all the content of the article "how to use the jQuery basic selector". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!