<el-tree ref="ftree" :data="mytree" :props="defaultProps" node-key="id" :render-content="renderContent"> </el-tree>
2. Get the tree object through refs in the method
var tree = this.$refs.ftree
3. Find the node according to the key, and then modify the children array
refreshContent: function(tree, id){ for(var i=0; i<tree.children.length; i++) { if(tree.children[i]["id"] == id){ tree.children[i]["name"] = "Content to be modified"; var value = tree.children[i]; tree.children.splice(i, 1, value); return true; } else if(tree.children[i].children != null && tree.children[i].children.length > 0){ var flag = this.refreshContent(tree.children[i], id); if(flag){ // If it is not updated layer by layer, the interface content will not be refreshed var value = tree.children[i]; tree.splice(i, 1, value); return true; } } } }