Visjs网络图使用滚轮和Shift键缩放存在问题。

使用Vis js提供的事件监听器，捕获鼠标滑轮和Shift键事件，在限制缩放倍数的前提下，更新网络图的缩放比例。具体代码实现如下：

var container = document.getElementById('mynetwork');

// create a network var data = { nodes: nodes, edges: edges }; var options = {}; var network = new vis.Network(container, data, options);

// add event listener container.addEventListener('wheel', function (e) { var scale = network.getScale(); var newScale = scale + (e.deltaY > 0 ? -0.05 : 0.05);

// limit zoom range if (newScale < 0.6 || newScale > 1.4) { return; }

network.moveTo({scale: newScale}); });

container.addEventListener('keydown', function (e) { if (e.shiftKey) { container.addEventListener('wheel', function (e) { e.preventDefault(); var scale = network.getScale(); var newScale = scale + (e.deltaY > 0 ? -0.05 : 0.05);

  // limit zoom range
  if (newScale < 0.6 || newScale > 1.4) {
    return;
  }

  // update network zoom
  network.moveTo({scale: newScale});
});

} });

container.addEventListener('keyup', function (e) { if (e.shiftKey) { container.removeEventListener('wheel', function (e) {}); } });