{"version":"1.0","type":"rich","title":"新增按钮","description":"This example demonstrates how to dynamically add and remove content blocks in a web page. Clicking the “新增” button creates a new row containing a text span and a “删除” delete button; clicking any delete button removes its corresponding row, but only if more than one row remains. The implementation uses plain JavaScript with the `document.createElement`, `appendChild`, and `addEventListener` methods to manipulate the DOM, and the page structure is defined in a single HTML file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4ee6abc7b4274feeb3f8f53f37bfb497?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}