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javascript - 使用 jQuery 的 D3.js 图的节点搜索栏

转载 作者:行者123 更新时间:2023-11-27 22:52:20 26 4
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我有一个网页,它使用 D3 javascript 库显示力定向图(具有其他功能)。我正在尝试添加一个节点搜索栏(使用 jQuery),当我搜索节点的属性之一(名称、clusterID 等,在 json 文件的节点部分中找到)时,它会突出显示该节点。

因此,我的网页已正确显示图表上方的搜索栏,但搜索按钮未正确突出显示节点。每次在搜索栏中输入字符时,我都会收到一条 Chrome 控制台消息:VM84:1 Uncaught SyntaxError: Unexpected token < in JSON at position 0 。完整的信息位于问题的底部。此外,当我单击搜索按钮搜索其中一个节点的已知名称属性时,控制台中没有任何反应。

我似乎无法让 jQuery 和 D3 代码一起工作,特别是 $() 中的自动完成功能。 jQuery 函数和 searchNode graph.js 中的函数文件。

有人可以帮我吗?下面是 jsFiddle 链接、构建网页的 html 和 javascript 文件以及 Chrome 控制台消息的屏幕截图。感谢您的帮助!

jsFiddle:http://jsfiddle.net/spw1016/mc5Lprcr/

Chrome 控制台完整错误: enter image description here

在搜索栏中输入后的完整错误消息:

Uncaught SyntaxError: Unexpected token < in JSON at position 0    VM89:1 

parseJSON @ jquery-1.9.1.min.js:3
transformResult @ jquery.autocomplete.min.js:10
processResponse @ jquery.autocomplete.min.js:21
(anonymous function) @ jquery.autocomplete.min.js:19
c @ jquery-1.9.1.min.js:3
fireWith @ jquery-1.9.1.min.js:3
k @ jquery-1.9.1.min.js:5
r @ jquery-1.9.1.min.js:5

index.html:

<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
overflow:hidden;
overflow:hidden;
margin:0;
}

text {
font-family: sans-serif;
pointer-events: none;
}
</style>
<head lang="en">
<title>Graph Visualization</title>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="js/jquery.autocomplete.min.js"></script>
<script type="text/javascript" src="js/currency-autocomplete.js"></script>
</head>
<body>
<div class="ui-widget">
<input id="search">
<button type="button" .onclick="searchNode()">Search</button>
</div>
</body>
<script src="graph.js"></script>
</html>

graph.js:

var w = window.innerWidth;
var h = window.innerHeight;

var keyc = true, keys = true, keyt = true, keyr = true, keyx = true, keyd = true, keyl = true, keym = true, keyh = true, key1 = true, key2 = true, key3 = true, key0 = true

var focus_node = null, highlight_node = null;

var text_center = false;
var outline = false;

var min_score = 1;
var max_score = 10;

/*
var color = d3.scale.linear()
.domain(1, 10)
.range(["lime", "yellow", "red"]);
*/

var color = d3.scale.linear()
.domain([min_score, (min_score+max_score)/2, max_score])
.range(["lime", "yellow", "red"]);

var highlight_color = "blue";
var highlight_trans = 0.1;

var size = d3.scale.pow().exponent(1)
.domain([1,100])
.range([8,24]);

var force = d3.layout.force()
.linkDistance(60)
.charge(-300)
.size([w,h]);

var default_node_color = "#ccc";
//var default_node_color = "rgb(3,190,100)";
var default_link_color = "#888";
var nominal_base_node_size = 8;
var nominal_text_size = 10;
var max_text_size = 24;
var nominal_stroke = 1.5;
var max_stroke = 4.5;
var max_base_node_size = 36;
var min_zoom = 0.1;
var max_zoom = 7;
var svg = d3.select("body").append("svg");
var zoom = d3.behavior.zoom().scaleExtent([min_zoom,max_zoom])
var g = svg.append("g");
svg.style("cursor","move");
/*
var request = new XMLHttpRequest();
request.open("GET", "graph.json", false);
request.send(null)
var graph = JSON.parse(request.responseText);
*/

d3.json("graph.json", function(error, graph) {

var linkedByIndex = {};
graph.links.forEach(function(d) {
linkedByIndex[d.source + "," + d.target] = true;
});

function isConnected(a, b) {
return linkedByIndex[a.index + "," + b.index] || linkedByIndex[b.index + "," + a.index] || a.index == b.index;
}

function hasConnections(a) {
for (var property in linkedByIndex) {
s = property.split(",");
if ((s[0] == a.index || s[1] == a.index) && linkedByIndex[property]) return true;
}
return false;
}

force
.nodes(graph.nodes)
.links(graph.links)
.start();

var link = g.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width",nominal_stroke)
.style("stroke", default_link_color)


var node = g.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")

.call(force.drag)


node.on("dblclick.zoom", function(d) { d3.event.stopPropagation();
var dcx = (window.innerWidth/2-d.x*zoom.scale());
var dcy = (window.innerHeight/2-d.y*zoom.scale());
zoom.translate([dcx,dcy]);
g.attr("transform", "translate("+ dcx + "," + dcy + ")scale(" + zoom.scale() + ")");


});


var tocolor = "fill";
var towhite = "stroke";
if (outline) {
tocolor = "stroke"
towhite = "fill"
}

var circle = node.append("path")


.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)||nominal_base_node_size,2); })
.type(function(d) { return d.type; }))

.style("fill", function(d) {return color(d.clusterID);})
.style("stroke-width", nominal_stroke)
.style(towhite, "white");


var text = g.selectAll(".text")
.data(graph.nodes)
.enter().append("text")
.attr("dy", ".35em")
.style("font-size", nominal_text_size + "px")

if (text_center)
text.text(function(d) { return d.name; })
.style("text-anchor", "middle");
else
text.attr("dx", function(d) {return (size(d.size)||nominal_base_node_size);})
.text(function(d) { return '\u2002'+d.name; });

node.on("mouseover", function(d) {
set_highlight(d);
})
.on("mousedown", function(d) { d3.event.stopPropagation();
focus_node = d;
set_focus(d)
if (highlight_node === null) set_highlight(d)}).on("mouseout", function(d) {
exit_highlight();});

d3.select(window).on("mouseup",
function() {
if (focus_node!==null)
{
focus_node = null;
if (highlight_trans<1)
{

circle.style("opacity", 1);
text.style("opacity", 1);
link.style("opacity", 1);
}
}

if (highlight_node === null) exit_highlight();
});

function exit_highlight()
{
highlight_node = null;
if (focus_node===null)
{
svg.style("cursor","move");
if (highlight_color!="white")
{
circle.style(towhite, "white");
text.style("font-weight", "normal");
link.style("stroke", function(o) {return (isNumber(o.score) && o.score>=0)?color(o.score):default_link_color});
}

}
}

function set_focus(d)
{
if (highlight_trans<1) {
circle.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});

text.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});

link.style("opacity", function(o) {
return o.source.index == d.index || o.target.index == d.index ? 1 : highlight_trans;
});
}
}


function set_highlight(d)
{
svg.style("cursor","pointer");
if (focus_node!==null) d = focus_node;
highlight_node = d;

if (highlight_color!="white")
{
circle.style(towhite, function(o) {
return isConnected(d, o) ? highlight_color : "white";});
text.style("font-weight", function(o) {
return isConnected(d, o) ? "bold" : "normal";});
link.style("stroke", function(o) {
return o.source.index == d.index || o.target.index == d.index ? highlight_color : ((isNumber(o.score) && o.score>=0)?color(o.score):default_link_color);

});
}
}


zoom.on("zoom", function() {

var stroke = nominal_stroke;
if (nominal_stroke*zoom.scale()>max_stroke) stroke = max_stroke/zoom.scale();
link.style("stroke-width",stroke);
circle.style("stroke-width",stroke);

var base_radius = nominal_base_node_size;
if (nominal_base_node_size*zoom.scale()>max_base_node_size) base_radius = max_base_node_size/zoom.scale();
circle.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)*base_radius/nominal_base_node_size||base_radius,2); })
.type(function(d) { return d.type; }))

//circle.attr("r", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); })
if (!text_center) text.attr("dx", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); });

var text_size = nominal_text_size;
if (nominal_text_size*zoom.scale()>max_text_size) text_size = max_text_size/zoom.scale();
text.style("font-size",text_size + "px");

g.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
});

svg.call(zoom);

resize();
//window.focus();
d3.select(window).on("resize", resize).on("keydown", keydown);

force.on("tick", function() {

node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
text.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });

link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });

node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
});


var optArray = [];
for (var i = 0; i < graph.nodes.length - 1; i++) {
optArray.push(graph.nodes[i].name);
}
optArray = optArray.sort();
$(function () {
$("#search").autocomplete({
source: optArray
});
});
function searchNode() {
//find the node
var selectedVal = document.getElementById('search').value;
//node = svg.selectAll(".node");
if (selectedVal == "none") {
node.style("stroke", "white").style("stroke-width", "1");
} else {
var selected = node.filter(function (d, i) {
return d.name != selectedVal;
});
selected.style("opacity", "0");
//var link = svg.selectAll(".link")
link.style("opacity", "0");
d3.selectAll(".node, .link").transition()
.duration(5000)
.style("opacity", 1);
}
}


function resize() {
var width = window.innerWidth, height = window.innerHeight;
svg.attr("width", width).attr("height", height);

force.size([force.size()[0]+(width-w)/zoom.scale(),force.size()[1]+(height-h)/zoom.scale()]).resume();
w = width;
h = height;
}

function keydown() {
if (d3.event.keyCode==32) { force.stop();}
else if (d3.event.keyCode>=48 && d3.event.keyCode<=90 && !d3.event.ctrlKey && !d3.event.altKey && !d3.event.metaKey)
{
switch (String.fromCharCode(d3.event.keyCode)) {
case "C": keyc = !keyc; break;
case "S": keys = !keys; break;
case "T": keyt = !keyt; break;
case "R": keyr = !keyr; break;
case "X": keyx = !keyx; break;
case "D": keyd = !keyd; break;
case "L": keyl = !keyl; break;
case "M": keym = !keym; break;
case "H": keyh = !keyh; break;
case "1": key1 = !key1; break;
case "2": key2 = !key2; break;
case "3": key3 = !key3; break;
case "0": key0 = !key0; break;
}

link.style("display", function(d) {
var flag = vis_by_type(d.source.type)&&vis_by_type(d.target.type)&&vis_by_node_score(d.source.score)&&vis_by_node_score(d.target.score)&&vis_by_link_score(d.score);
linkedByIndex[d.source.index + "," + d.target.index] = flag;
return flag?"inline":"none";});
node.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});
text.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});

if (highlight_node !== null)
{
if ((key0||hasConnections(highlight_node))&&vis_by_type(highlight_node.type)&&vis_by_node_score(highlight_node.score)) {
if (focus_node!==null) set_focus(focus_node);
set_highlight(highlight_node);}
else {exit_highlight();}
}
}
}
});


function vis_by_type(type)
{
switch (type) {
case "circle": return keyc;
case "square": return keys;
case "triangle-up": return keyt;
case "diamond": return keyr;
case "cross": return keyx;
case "triangle-down": return keyd;
default: return true;
}
}
function vis_by_node_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return keyh;
else if (score>=0.333) return keym;
else if (score>=0) return keyl;
}
return true;
}

function vis_by_link_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return key3;
else if (score>=0.333) return key2;
else if (score>=0) return key1;
}
return true;
}

function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}

最佳答案

搜索的问题是,当您在 onclick 前面附加一个点时,该函数没有被调用:

你正在做

<button type="button" .onclick="searchNode()">Search</button>

                      ^
|____ this is incorrect no need for a dot here.

这是屏幕截图:http://www.clipular.com/c/5115163935506432.png?k=HwZkU1_RriBsPlAfjsZWNzGcBSY

工作代码here

关于javascript - 使用 jQuery 的 D3.js 图的节点搜索栏,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37959231/

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