前端之gojs插件的基本使用

gojs是一個前端插件，可以通過代碼動態的生成流程圖，各自展示圖

參考網址:https://gojs.net/latest/index.html

如果你想使用，需要先下載對應的文件

我們能用的到的其實就三個文件

"""
gojs.js  			需要導入的js文件
go-debug.js   會幫你打印錯誤日志
	上面兩個文件就類似於一個是壓縮的一個是沒有壓縮的
	
Figures.js
	gojs.js內部只帶了基本的圖形 如果你想用更多的如下則需要導入該文件
"""

基本使用

先用div占據一塊區域，之后在該區域內生成對應的圖標及各種流程圖

<div id="myDiagramDiv" style="width:500px; height:350px; background-color: #DAE4E4;"></div>
<script src="go.js"></script>

<script>
  var $ = go.GraphObject.make;
  // 第一步：創建圖表
  var myDiagram = $(go.Diagram, "myDiagramDiv"); // 創建圖表，用於在頁面上畫圖
  // 第二步：創建一個節點，內容為jason
  var node = $(go.Node, $(go.TextBlock, {text: "蔡徐坤"}));
  // 第三步：將節點添加到圖表中
  myDiagram.add(node)
</script>

重要概念

• TextBlock 文本
• Shape 圖形
• Node 圖形與文本結合
• Link 箭頭

TextBlock

<div id="myDiagramDiv" style="width:500px; height:350px; background-color: #DAE4E4;"></div>
<script src="go.js"></script>
<script>
    var $ = go.GraphObject.make;
    // 第一步：創建圖表
    var myDiagram = $(go.Diagram, "myDiagramDiv"); // 創建圖表，用於在頁面上畫圖
    var node1 = $(go.Node, $(go.TextBlock, {text: "蔡徐坤"}));
    myDiagram.add(node1);
    var node2 = $(go.Node, $(go.TextBlock, {text: "蔡徐坤", stroke: 'red'}));
    myDiagram.add(node2);
    var node3 = $(go.Node, $(go.TextBlock, {text: "蔡徐坤", background: 'yellow'}));
    myDiagram.add(node3);
</script>

Shape

<div id="myDiagramDiv" style="width:500px; height:350px; background-color: #DAE4E4;"></div>
<script src="go.js"></script>
<script src="Figures.js"></script>
<script>
    var $ = go.GraphObject.make;
    // 第一步：創建圖表
    var myDiagram = $(go.Diagram, "myDiagramDiv"); // 創建圖表，用於在頁面上畫圖

    var node1 = $(go.Node,
        $(go.Shape, {figure: "Ellipse", width: 40, height: 40})
    );
     myDiagram.add(node1);

     var node2 = $(go.Node,
        $(go.Shape, {figure: "RoundedRectangle", width: 40, height: 40, fill: 'green',stroke:'red'})
    );
    myDiagram.add(node2);

    var node3 = $(go.Node,
        $(go.Shape, {figure: "Rectangle", width: 40, height: 40, fill: null})
    );
    myDiagram.add(node3);

    var node5 = $(go.Node,
        $(go.Shape, {figure: "Club", width: 40, height: 40, fill: 'red'})
    );
    myDiagram.add(node5);
</script>

Node

<div id="myDiagramDiv" style="width:500px; height:350px; background-color: #DAE4E4;"></div>
<script src="go.js"></script>
<script src="Figures.js"></script>
<script>
    var $ = go.GraphObject.make;
    // 第一步：創建圖表
    var myDiagram = $(go.Diagram, "myDiagramDiv"); // 創建圖表，用於在頁面上畫圖

    var node1 = $(go.Node,
         "Vertical",  // 垂直方向
        {
            background: 'yellow',
            padding: 8
        },
        $(go.Shape, {figure: "Ellipse", width: 40, height: 40,fill:null}),
        $(go.TextBlock, {text: "蔡徐坤"})
    );
    myDiagram.add(node1);

    var node2 = $(go.Node,
        "Horizontal",  // 水平方向
        {
            background: 'white',
            padding: 5
        },
        $(go.Shape, {figure: "RoundedRectangle", width: 40, height: 40}),
        $(go.TextBlock, {text: "蔡徐坤"})
    );
    myDiagram.add(node2);

    var node3 = $(go.Node,
        "Auto",  // 居中
        $(go.Shape, {figure: "Ellipse", width: 80, height: 80, background: 'green', fill: 'red'}),
        $(go.TextBlock, {text: "蔡徐坤"})
    );
    myDiagram.add(node3);

</script>

Link

<div id="myDiagramDiv" style="width:500px; min-height:450px; background-color: #DAE4E4;"></div>
    <script src="go.js"></script>
    <script>
        var $ = go.GraphObject.make;

        var myDiagram = $(go.Diagram, "myDiagramDiv",
            {layout: $(go.TreeLayout, {angle: 0})}
        ); // 創建圖表，用於在頁面上畫圖

        var startNode = $(go.Node, "Auto",
            $(go.Shape, {figure: "Ellipse", width: 40, height: 40, fill: '#79C900', stroke: '#79C900'}),
            $(go.TextBlock, {text: '開始', stroke: 'white'})
        );
        myDiagram.add(startNode);

        var downloadNode = $(go.Node, "Auto",
            $(go.Shape, {figure: "RoundedRectangle", height: 40, fill: 'red', stroke: '#79C900'}),
            $(go.TextBlock, {text: '下載代碼', stroke: 'white'})
        );
        myDiagram.add(downloadNode);

        var startToDownloadLink = $(go.Link,
            {fromNode: startNode, toNode: downloadNode},
            $(go.Shape, {strokeWidth: 1}),
            $(go.Shape, {toArrow: "OpenTriangle", fill: null, strokeWidth: 1})
        );
        myDiagram.add(startToDownloadLink);
    </script>

上述代碼只需要看懂即可，無需掌握

數據綁定的方式

<div id="diagramDiv" style="width:100%; min-height:450px; background-color: #DAE4E4;"></div>

    <script src="go.js"></script>
    <script>
        var $ = go.GraphObject.make;
        var diagram = $(go.Diagram, "diagramDiv",{
            layout: $(go.TreeLayout, {
                angle: 0,
                nodeSpacing: 20,
                layerSpacing: 70
            })
        });

        // 先創建一個模版
        diagram.nodeTemplate = $(go.Node, "Auto",
            $(go.Shape, {
                figure: "RoundedRectangle",
                fill: 'yellow',
                stroke: 'yellow'
            }, new go.Binding("figure", "figure"), new go.Binding("fill", "color"), new go.Binding("stroke", "color")),
            $(go.TextBlock, {margin: 8}, new go.Binding("text", "text"))
        );

        // 先創建一個模版
        diagram.linkTemplate = $(go.Link,
            {routing: go.Link.Orthogonal},
            $(go.Shape, {stroke: 'yellow'}, new go.Binding('stroke', 'link_color')),
            $(go.Shape, {toArrow: "OpenTriangle", stroke: 'yellow'}, new go.Binding('stroke', 'link_color'))
        );

        // 數據格式是列表套字典 也就意味着可以從后端構造數據
        var nodeDataArray = [
            {key: "start", text: '開始', figure: 'Ellipse', color: "lightgreen"},
            {key: "download", parent: 'start', text: '下載代碼', color: "lightgreen", link_text: '執行中...'},
            {key: "compile", parent: 'download', text: '本地編譯', color: "lightgreen"},
            {key: "zip", parent: 'compile', text: '打包', color: "red", link_color: 'red'},
            {key: "c1", text: '服務器1', parent: "zip"},
            {key: "c11", text: '服務重啟', parent: "c1"},
            {key: "c2", text: '服務器2', parent: "zip"},
            {key: "c21", text: '服務重啟', parent: "c2"},
            {key: "c3", text: '服務器3', parent: "zip"},
            {key: "c31", text: '服務重啟', parent: "c3"}
        ];
        diagram.model = new go.TreeModel(nodeDataArray);

        // 動態控制節點顏色變化  先找到節點之后改變
        var node = diagram.model.findNodeDataForKey("zip");
        diagram.model.setDataProperty(node, "color", "lightgreen");
    </script>

如何去除自帶的水印

修改go.js/go-debug.js中的源碼

1.查找一個字符串:7eba17a4ca3b1a8346，注釋所在行

/*a.kr=b.V[Ra("7eba17a4ca3b1a8346")][Ra("78a118b7")](b.V,Jk,4,4);*/

2.添加新的代碼

a.kr=function(){return true};