效果图
使用html+css+js，无图片，没用Canvas
demo:
<!DOCTYPE html>
<html>
<head><link href="draw.css" rel="stylesheet" /><script src="draw.js" type="text/javascript"></script>
</head>
<body><div class="diamond" style="top:100px;left: 100px;"><span class="diamond-text">开始</span></div><!-- 下箭头 --><div class="arrow-down" style="top:195px;left:140px;"><span></span></div><div class="rectangle" style="top:275px;left: 100px;"><span class="rectangle-text">步骤一</span></div><div class="arrow-down" style="top:325px;left:140px;"><span></span></div><div class="rectangle" style="top:405px;left: 100px;"><span class="rectangle-text">步骤二</span></div><div class="arrow-down" style="top:455px;left:140px;"><span></span></div><div class="diamond" style="top:550px;left: 100px;"><span class="diamond-text">分叉节点</span></div><div><div class="arrow-down" style="top:645px;left:140px;"><span></span></div><div class="rectangle" style="top:725px;left: 100px;"><span class="rectangle-text">步骤三</span></div></div><div><div class="arrow-horizontal-down" style="top:590px;left:195px;"><div></div><span></span></div><div class="rectangle" style="top:725px;left: 230px;"><span class="rectangle-text">步骤四</span></div></div></body>
</html>
css:
/* 椭圆 */
.ellipse {width: 100px;height: 50px;background-color: #6495ED;border-radius: 100px;text-align: center;position: absolute;
}.ellipse-text {width: 80px;height: 50px;margin-top: 10px;
}/* 菱形，长宽91.28 */
.diamond {width: 80px;height: 80px;transform: rotate(45deg);background-color: #bfa;position: absolute;
}.diamond-text{width: 60px;margin-top: 10px;display: inline-block;transform: rotate(-45deg);text-align: center;
}/* 长方形 */
.rectangle{width: 92px;height: 50px;border: 1px;border-color: black;background-color: aquamarine;text-align: center;position: absolute;
}/* 向下箭头 */
.arrow-down {width: 2px;height: 80px;background-color: black;position: absolute;
}.arrow-down span {width: 0;height: 0;border-left: 5px solid transparent;border-right: 5px solid transparent;border-top: 10px solid black;position: relative;top:81px;left:-4px;
}/* 折线箭头 */
.arrow-horizontal-down {width: 150px;height: 2px;background-color: black;position: absolute;z-index: -1;
}.arrow-horizontal-down div{width: 2px;height: 125px;left:150px;background-color: black;position: relative;
}.arrow-horizontal-down span {width: 0;height: 0;border-left: 5px solid transparent;border-right: 5px solid transparent;border-top: 10px solid black;position: relative;top:10px;left:146px;
}/* 横线 */
.horizontal-line{width: 100px;height: 2px;background-color: black;position: absolute;z-index: -1;
}
js 代码 可以动态生成流程图
// json 节点数据
// let data = 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t(1)","apptid":"ihrm_attendanceleave","children":[1374],"LengtheningTime":0},{"id":1697,"name":"HRBPIII","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1378],"LengtheningTime":0},{"id":1698,"name":"HRBPIV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1382],"LengtheningTime":0},{"id":1699,"name":"人力资源备案","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1552],"LengtheningTime":0},{"id":1700,"name":"HRBPV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1557],"LengtheningTime":0},{"id":1701,"name":"发行中心负责人I","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1612],"LengtheningTime":0},{"id":1702,"name":"发行中心负责人II","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1696],"LengtheningTime":0},{"id":1703,"name":"发行中心负责人III","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1697],"LengtheningTime":0},{"id":1704,"name":"发行中心负责人IV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1698],"LengtheningTime":0},{"id":1705,"name":"发行中心负责人V","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1700],"LengtheningTime":0},{"id":1928,"name":"美术负责人I","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2265],"LengtheningTime":0},{"id":1929,"name":"美术负责人II","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2266],"LengtheningTime":0},{"id":1930,"name":"美术负责人III","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2267],"LengtheningTime":0},{"id":1931,"name":"美术负责人IV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2268],"LengtheningTime":0},{"id":1932,"name":"美术负责人V","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2269],"LengtheningTime":0},{"id":1974,"name":"HRBPI","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1975],"LengtheningTime":0},{"id":1975,"name":"人力与行政负责人I","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1981],"LengtheningTime":0},{"id":1976,"name":"人力资源备案II","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2067],"LengtheningTime":0},{"id":1979,"name":"人力资源备案IV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2175],"LengtheningTime":0},{"id":1980,"name":"人力资源备案V","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2176],"LengtheningTime":0},{"id":1981,"name":"史延斌I","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1403],"LengtheningTime":0},{"id":1982,"name":"史延斌II","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1976],"LengtheningTime":0},{"id":1983,"name":"史延斌III","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2068],"LengtheningTime":0},{"id":1984,"name":"人力资源备案III","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2174],"LengtheningTime":0},{"id":1985,"name":"史延斌IV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1979],"LengtheningTime":0},{"id":1986,"name":"史延斌V","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1980],"LengtheningTime":0},{"id":2067,"name":"部门助理备案","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1613],"LengtheningTime":0},{"id":2068,"name":"部门助理备案","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1984],"LengtheningTime":0},{"id":2107,"name":"程序中心副总经理I","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1404],"LengtheningTime":0},{"id":2108,"name":"程序中心副总经理II","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1405],"LengtheningTime":0},{"id":2109,"name":"程序中心副总经理III","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1406],"LengtheningTime":0},{"id":2110,"name":"程序中心副总经理IV","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1407],"LengtheningTime":0},{"id":2111,"name":"程序中心副总经理V","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[1556],"LengtheningTime":0},{"id":2120,"name":"程序中心副总经理","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2122],"LengtheningTime":0},{"id":2122,"name":"程序BP1","type":"diamond","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2123,2125,2159,2161],"LengtheningTime":0},{"id":2123,"name":"人力与行政负责人","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","children":[2179],"LengtheningTime":0},{"id":2125,"name":"程序中心总经理","type":"rectangle","click":"alert(1)","apptid":"ihrm_attendanceleave","childre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let data = 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偏移数值
let offsetNum = {ellipseTop :51,ellipseLeft :40,diamondTop :95,diamondLeft :40,rectangleTop :50,rectangleLeft :40,arrowTop :80,arrowLeft :0,brokenLineTop:135,brokenLineLeft:80
}// 开始创建
function BeginDraw(){CreateNode(data[0],100,100);
}// 循环创建子节点
function CreateChildNode(lastNode,lastTop,lastLeft){// 一个子节点if(lastNode.children.length > 0){CreateVerticalArrow(lastNode,lastTop,lastLeft);}// 多个子节点if(lastNode.children.length > 1){let beginTop = GetOffsetTop(lastNode) / 2 + lastTop - 10;let beginLeft = GetOffsetLeft(lastNode) * 2 + lastLeft + 15;for (let c = 1;c < lastNode.children.length;c++) {CreateBrokenArrow(beginTop,beginLeft,lastNode.children[c]);beginLeft = beginLeft + 140;}}
}// 创建节点
function CreateNode(node,top,left){let div = document.createElement("div");div.className = node.type;div.style.top = top + "px";div.style.left = left + "px";let span = document.createElement("span");span.innerText = node.name;span.className = node.type + "-text";div.appendChild(span);div.onclick = function() {// 使用eval执行方法eval(node.click);};document.body.append(div);CreateChildNode(node,top,left);
}// 创建竖线箭头+节点
function CreateVerticalArrow(lastNode,nodeTop,nodeLeft){// 竖线箭头toplet arrowtop = GetOffsetTop(lastNode) + nodeTop;// 竖线箭头leftlet arrowleft = GetOffsetLeft(lastNode) + nodeLeft;let div = document.createElement("div");div.className = "arrow-down";div.style.top = arrowtop + "px";div.style.left = arrowleft + "px";let span = document.createElement("span");div.appendChild(span);document.body.append(div);for (let key in data) {if(lastNode.children[0] == data[key].id){// 新节点toplet newNodeTop = arrowtop + offsetNum.arrowTop;if(data[key].type == "diamond"){newNodeTop = newNodeTop + 15;}CreateNode(data[key],newNodeTop,nodeLeft);}}
}// 创建折线箭头+节点
function CreateBrokenArrow(arrowTop,arrowLeft,childnum){let div = document.createElement("div");div.className = "arrow-horizontal-down";div.style.top = arrowTop + "px";div.style.left = (arrowLeft - 70) + "px";let ndiv = document.createElement("div");let span = document.createElement("span");div.appendChild(ndiv);div.appendChild(span);document.body.append(div);for (let key in data) {if(childnum == data[key].id){// 新节点toplet newNodeTop = arrowTop + offsetNum.brokenLineTop;// 新节点Leftlet newNodeLeft = arrowLeft + offsetNum.brokenLineLeft - GetOffsetLeft(data[key]);if(data[key].type == "diamond"){newNodeTop = newNodeTop + 15;}CreateNode(data[key],newNodeTop,newNodeLeft);}}
}// 获取Top偏移量
function GetOffsetTop(lastNode){if(lastNode.type == "arrow"){return offsetNum.arrowTop;}else if(lastNode.type == "diamond"){return offsetNum.diamondTop;}else if(lastNode.type == "rectangle"){return offsetNum.rectangleTop;}else if(lastNode.type == "ellipse"){return offsetNum.ellipseTop;}return 100;
}// 获取Left偏移量
function GetOffsetLeft(lastNode){if(lastNode.type == "arrow"){return offsetNum.arrowLeft;}else if(lastNode.type == "diamond"){return offsetNum.diamondLeft;}else if(lastNode.type == "rectangle"){return offsetNum.rectangleLeft;}else if(lastNode.type == "ellipse"){return offsetNum.ellipseLeft;}return 0;
}
动态生成效果
