The first example of the accordion command is the accordion effect command: image online instance address: the pure HTML source code of the accordion command does not use AngularJS is as follows: copy the Code <div class = "accordion" id = "accordion2"> <div class = "accordion-group"> <div class = "accordion-heading"> <a class =" accordion-toggle "data-toggle =" collapse "data-parent =" # accordion2 "href =" # collapseOne "> Collapsible Group Item #1 </a> </div> <div id = "collapseOne" class = "accordion-body collapse in"> <div class = "accordion-inner"> Anim pariatur cliche... </div> <div class = "accordion-group"> <div class = "accordion-heading"> <a class = "accordion-toggle "data-toggle =" collapse "data-parent =" # accordion2 "href =" # collapseTwo "> Collapsible Group Item #2 </a> </div> <div id = "collapseTwo" class = "accordion-body collapse"> <div class = "accordion-inner"> Anim pariatur cliche... </div> copy the above pure HTML source code. Organ effect, but it is only a few marks, contains a large number of links and IDs, is not conducive to maintenance. Using AngularJS custom commands combined with the following HTML source code can also achieve the expected results: copy the Code <body ng-app = "btst">