1.解决vue项目中import @/符号下有波浪线的问题

https://blog.csdn.net/weixin_48095370/article/details/115477678
1.首先打开webstorm中file->setting,之后找到language&frameworks中javascript的webpack选项
2.之后点开找到项目目录\node_modules\@vue\cli-service\webpack.config.js 后点应用即可。

1、根据子id 找出完整的父级数组

  1. // 查找父元素
  2.             getParentNodes(id, tree) {
  3.                 this._getParentNodes([], id, tree);
  4.                 return this.nodes;
  5.             },
  6.             _getParentNodes(his, targetId, tree) {
  7.                 tree.some((list) => {
  8.                     const children = list.childVO || [];
  9.                     if (list.id == targetId) {
  10.                         his.push(list.id);
  11.                         this.nodes = his;
  12.                         return true;
  13.                     } else if (children.length > 0) {
  14.                         const history = [...his];
  15.                         history.push(list.id);
  16.                         return this._getParentNodes(history, targetId, children);
  17.                     }
  18.                 })
  19.             },
  22.       this.postOrGroupId1 = this.getParentNodes(this.form1.groupId,this.postList);

1、多个文件下载用window.open不行

https://blog.csdn.net/m0_37792830/article/details/103992796

单个文件下载

  1. window.open(url)

多个文件下载
多个文件下载用window.open不行，你会发现他只下载了一个，并不是所有。

  1. let triggerDelay = 100;
  2. let removeDelay = 1000;
  3. this.urlList.forEach((url, index) => {
  4.   this.createIFrame(url, index * triggerDelay, removeDelay);
  5. });
  7. // 这里是创建iframe的方法
  8. function createIFrame(url, triggerDelay, removeDelay) {
  9.    //动态添加iframe，设置src，然后删除
  10.    setTimeout(function() {
  11.      var frame = document.createElement("iframe");
  12.      frame.src = url;
  13.      frame.style.display = "none";
  14.      document.body.appendChild(frame);
  15.      setTimeout(function() {
  16.        frame.remove();
  17.      }, removeDelay);
  18.    }, triggerDelay);
  19.  },

2、解决element-ui 中upload组件使用多个时无法绑定对应的元素

https://www.jianshu.com/p/6a4d0c6e26c2

3、vue项目添加Cropper.js实现裁剪功能

https://www.cnblogs.com/xingzoudecd/p/14028622.html

3.element-ui日期组件DatePicker设置日期选择范围Picker Options

https://www.cnblogs.com/steamed-twisted-roll/p/9755651.html