Javascript 如何运行<;脚本>;从一个按钮
我是新的网页设计,我正在使用javascript库绘制一棵树。我的问题是,它是在加载页面时自动绘制的。我想有一个按钮,并在绘画上点击,但我找不到如何做到这一点。尝试将函数传递给javascript文件,但当传递它时,我不知道在html文件中如何调用它 这是小提琴Javascript 如何运行<;脚本>;从一个按钮,javascript,d3.js,Javascript,D3.js,我是新的网页设计,我正在使用javascript库绘制一棵树。我的问题是,它是在加载页面时自动绘制的。我想有一个按钮,并在绘画上点击,但我找不到如何做到这一点。尝试将函数传递给javascript文件,但当传递它时,我不知道在html文件中如何调用它 这是小提琴 变量treeData=[ { “名称”:“顶级”, “父项”:“null”, “儿童”:[ { “名称”:“2级:A”, “父级”:“顶级”, “儿童”:[ { “姓名”:“人子”, “父级”:“级别2:A” }, { “姓名”:“A
变量treeData=[
{
“名称”:“顶级”,
“父项”:“null”,
“儿童”:[
{
“名称”:“2级:A”,
“父级”:“顶级”,
“儿童”:[
{
“姓名”:“人子”,
“父级”:“级别2:A”
},
{
“姓名”:“A的女儿”,
“父级”:“级别2:A”
}
]
},
{
“名称”:“2级:B级”,
“父级”:“顶级”
}
]
}
];
//*************生成树形图*****************
var margin={顶部:40,右侧:120,底部:20,左侧:120},
宽度=960-margin.right-margin.left,
高度=500-margin.top-margin.bottom;
var i=0;
var tree=d3.layout.tree().size([height,width]);
var diagonal=d3.svg.diagonal().projection(函数(d){return[d.x,d.y];});
var svg=d3.选择(“正文”).追加(“svg”)
.attr(“宽度”,宽度+边距。右侧+边距。左侧)
.attr(“高度”,高度+边距。顶部+边距。底部)。追加(“g”)
.attr(“转换”、“平移”(+margin.left+)、“+margin.top+”);
根=树数据[0];
更新(根);
函数更新(源){
//计算新的树布局。
var nodes=tree.nodes(root).reverse(),
链接=树。链接(节点);
//为固定深度的.nodes.forEach(函数(d){d.y=d.depth*100;})进行规范化;
//声明节点…
var node=svg.selectAll(“g.node”).data(节点,函数(d){returnd.id | |(d.id=++i)});
//输入节点。
var nodeEnter=node.enter().append(“g”).attr(“类”、“节点”)
.attr(“转换”,函数(d){
返回“translate”(“+d.x+”,“+d.y+”);});
nodeEnter.append(“circle”).attr(“r”,10).style(“fill”,“#fff”);
nodeEnter.append(“text”).attr(“y”,函数(d){
返回d.children | | d.| U children?-18:18;})
.attr(“dy”,“.35em”)
.attr(“文本锚定”、“中间”)
.text(函数(d){返回d.name;})
.样式(“填充不透明度”,1);
//声明链接…
var link=svg.selectAll(“path.link”)
.data(链接,函数(d){返回d.target.id;});
//输入链接。
link.enter()插入(“路径”,“g”)
.attr(“类”、“链接”)
.attr(“d”,对角线);
}
调用按钮的最简单方法是
<button onclick="update()">Update</button>
更新
调用按钮的最简单方法是
<button onclick="update()">Update</button>
更新
您可以使用Javascript函数包装代码,并使用按钮的onclick
属性启动代码
检查下面的代码,看看它是如何工作的
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Collapsible Tree Example</title>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text { font: 12px sans-serif; }
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
</head>
<body>
<!-- load the d3.js library -->
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
function renderTree() {
var treeData = [
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = {top: 40, right: 120, bottom: 20, left: 120},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0;
var tree = d3.layout.tree().size([height, width]);
var diagonal = d3.svg.diagonal().projection(function(d) { return [d.x, d.y]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom).append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.nodes.forEach(function(d) { d.y = d.depth * 100; });
// Declare the nodes…
var node = svg.selectAll("g.node").data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter the nodes.
var nodeEnter = node.enter().append("g").attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"; });
nodeEnter.append("circle").attr("r", 10).style("fill", "#fff");
nodeEnter.append("text").attr("y", function(d) {
return d.children || d._children ? -18 : 18; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("fill-opacity", 1);
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", diagonal);
}
}
</script>
<input type="button" value="Render" onclick="renderTree();">
</body>
</html>
可折叠树示例
.节点圆{
填充:#fff;
笔画:钢蓝;
笔画宽度:3px;
}
.node文本{font:12px无衬线;}
.链接{
填充:无;
冲程:#ccc;
笔画宽度:2px;
}
函数renderTree(){
变量treeData=[
{
“名称”:“顶级”,
“父项”:“null”,
“儿童”:[
{
“名称”:“2级:A”,
“父级”:“顶级”,
“儿童”:[
{
“姓名”:“人子”,
“父级”:“级别2:A”
},
{
“姓名”:“A的女儿”,
“父级”:“级别2:A”
}
]
},
{
“名称”:“2级:B级”,
“父级”:“顶级”
}
]
}
];
//*************生成树形图*****************
var margin={顶部:40,右侧:120,底部:20,左侧:120},
宽度=960-margin.right-margin.left,
高度=500-margin.top-margin.bottom;
var i=0;
var tree=d3.layout.tree().size([height,width]);
var diagonal=d3.svg.diagonal().projection(函数(d){return[d.x,d.y];});
var svg=d3.选择(“正文”).追加(“svg”)
.attr(“宽度”,宽度+边距。右侧+边距。左侧)
.attr(“高度”,高度+边距。顶部+边距。底部)。追加(“g”)
.attr(“转换”、“平移”(+margin.left+)、“+margin.top+”);
根=树数据[0];
更新(根);
函数更新(源){
//计算新的树布局。
var nodes=tree.nodes(root).reverse(),
链接=树。链接(节点);
//为固定深度的.nodes.forEach(函数(d){d.y=d.depth*100;})进行规范化;
//声明节点…
var node=svg.selectAll(“g.node”).data(节点,函数(d){returnd.id | |(d.id=++i)});
//输入节点。
var nodeEnter=node.enter().append(“g”).attr(“类”、“节点”)
.attr(“转换”,函数(d){
返回“translate”(“+d.x+”,“+d.y+”);});
nodeEnter.append(“circle”).attr(“r”,10).style(“fill”,“#fff”);
nodeEnter.append(“text”).attr(“y”,函数(d){
返回d.children | | d.| U children?-18:18;})
.attr(“dy”,“.35em”)
.attr(“文本锚定”、“中间”)
.text(函数(d){返回d.name;})
.样式(“填充不透明度”,1);
//声明链接…
var link=svg.selectAll(“path.link”)
.data(链接,函数(d){返回d.target.id;});
//输入链接。
link.enter()插入(“路径”,“g”)
.attr(“类”、“链接”)
.attr(“d”,对角线);
}
}
您可以使用Javascript函数包装代码,并使用按钮的onclick
属性启动代码
检查下面的代码,看看它是如何工作的
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Collapsible Tree Example</title>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text { font: 12px sans-serif; }
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
</head>
<body>
<!-- load the d3.js library -->
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
function renderTree() {
var treeData = [
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = {top: 40, right: 120, bottom: 20, left: 120},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0;
var tree = d3.layout.tree().size([height, width]);
var diagonal = d3.svg.diagonal().projection(function(d) { return [d.x, d.y]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom).append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.nodes.forEach(function(d) { d.y = d.depth * 100; });
// Declare the nodes…
var node = svg.selectAll("g.node").data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter the nodes.
var nodeEnter = node.enter().append("g").attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"; });
nodeEnter.append("circle").attr("r", 10).style("fill", "#fff");
nodeEnter.append("text").attr("y", function(d) {
return d.children || d._children ? -18 : 18; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("fill-opacity", 1);
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", diagonal);
}
}
</script>
<input type="button" value="Render" onclick="renderTree();">
</body>
</html>
可折叠树示例
.节点圆{
填充:#fff;
笔画:钢蓝;
笔画宽度:3px;
}
.node文本{font:12px无衬线;}
.链接{
填充:无;
冲程:#ccc;
笔画宽度:2px;
}
函数renderTree(){
变量treeData=[
{
“名称”:“顶级”,
“父项”:“null”,
“儿童”:[
{
“名称”:“2级:A”,
“父级”:“顶级”,
“儿童”:[
{
“姓名”:“人子”,
“父级”:“级别2:A”
},
{
“姓名”:“A的女儿”,
“家长
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.tree {
margin-bottom: 10px;
overflow: auto;
}
function go(){
var treeData =
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A",
"children": []
},
{
"name": "Daughter of A",
"parent": "Level 2: A",
"children": []
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level",
"children": []
}
]
};
BuildVerticaLTree(treeData,"#tree");
}
function BuildVerticaLTree(treeData, treeContainerDom) {
var margin = {
top: 40,
right: 120,
bottom: 20,
left: 120
};
var width = 960 - margin.right - margin.left;
var height = 960 - margin.top - margin.bottom;
var i = 0,
duration = 750;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) {
return [d.x, d.y];
});
var svg = d3.select(treeContainerDom).append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData;
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 100;
});
// Declare the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter the nodes.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + source.x0 + "," + source.y0 + ")";
}).on("click", nodeclick);
nodeEnter.append("circle")
.attr("r", 10)
.attr("stroke", function(d) {
return d.children || d._children ? "steelblue" : "#00c13f";
})
.style("fill", function(d) {
return d.children || d._children ? "lightsteelblue" : "#fff";
});
//.attr("r", 10)
//.style("fill", "#fff");
nodeEnter.append("text")
.attr("y", function(d) {
return d.children || d._children ? -18 : 18;
})
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) {
return d.name;
})
.style("fill-opacity", 1e-6);
// Transition nodes to their new position.
//horizontal tree
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
nodeUpdate.select("circle")
.attr("r", 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.x + "," + source.y + ")";
})
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) {
return d.target.id;
});
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal({
source: o,
target: o
});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {
x: source.x,
y: source.y
};
return diagonal({
source: o,
target: o
});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function nodeclick(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}