jsplumb/browder-ui 删除所有连线的方法

[klren0312]

const jsplumbInst = jsplumb.newInstance({container: '...'})
// ...
const arr = jsplumbInst.connections
if (arr.length > 0) {
  for (let i = arr.length - 1; i >= 0; i--) {
    jsplumbInst.deleteConnection(arr[0], { force: true })
  }
}
//...