How to use Dom elements in jQuery?

DOM is an interface that has nothing to do with browsers, platforms, and languages. You can use this interface to easily access all standard components in the page. This article introduces you to the jquery dom element operation method. Friends who need it can refer to it

Dom is the abbreviation of Document Object Model, which means document object model. DOM is an interface that is independent of browsers, platforms, and languages. You can use this interface to easily access all standard components in the page. DOM operations can be divided into three aspects: DOM Core, HTM-DOM and CSS-DOM.

jquery gets the parent node, sibling node, and inserts content into the node.

①$("#test1").parent() // 父节点
②$("#test1").next() //下一个节点 
③$("#test1").append(&#39;<p class="error_info"><span class="Validform_checktip"></span></p>&#39;); //在节点内插入内容。 
④匹配到指定的元素
$("#test1").parent().next().find(".error_info");

Summary: When writing js, we must first determine whether to use javaScript or jquery, because the two writing methods are different and the method names are also different and cannot be mixed.

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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