[英]Prevent mouseout action after click on an element with D3.js
我想在用戶單擊此元素時阻止元素的mouseout操作。 舉個例子,看看這個JSFiddle (即使我點擊標簽,圓圈也會消失)。
有沒有一種簡單的方法來實現我的目標與d3.js? 謝謝!
JSFiddle示例代碼:
var svg = d3.select("#content")
.append("svg")
.attr("width", 600)
.attr("height", 400);
var g = svg.append("g");
var text = g.append("text")
.text("Click me")
.style("fill", "Blue")
.attr("x", 50)
.attr("y", 50)
.on("mouseover", mouseover)
.on("mouseout", mouseout)
.on("click", click);
var circle = g.append("circle")
.style("fill", "Orange")
.attr("cx", 150)
.attr("cy", 90)
.attr("r", 15)
.classed("hide", true)
.classed("someClass", true);
function mouseover(p){
d3.selectAll("circle.someClass").classed("hide", false);
}
function mouseout(p){
d3.selectAll("circle.someClass").classed("hide", true);
}
function click(p){
d3.selectAll("circle.someClass").classed("hide", false);
}
如果您計划只有一個控制圓圈的元素,請使用“標記”。 有條件地注冊/取消注冊事件是不是一個好主意。
檢查你的小提琴的這個更新版本:
https://jsfiddle.net/cze9rqf7/
var svg = d3.select("#content")
.append("svg")
.attr("width", 600)
.attr("height", 400);
var g = svg.append("g");
var text = g.append("text")
.text("Click me")
.style("fill", "Blue")
.attr("x", 50)
.attr("y", 50)
.on("mouseover", mouseover)
.on("mouseout", mouseout)
.on("click", click);
var circle = g.append("circle")
.style("fill", "Orange")
.attr("cx", 150)
.attr("cy", 90)
.attr("r", 15)
.classed("hide", true)
.classed("someClass", true);
var isClicked = false;
function mouseover(p){
d3.selectAll("circle.someClass").classed("hide", false);
}
function mouseout(p){
if(!isClicked) {
d3.selectAll("circle.someClass").classed("hide", true);
}
}
function click(p){
isClicked = !isClicked;
d3.selectAll("circle.someClass").classed("hide", false);
}
編輯評論
如果您需要“記住”每個元素的狀態,而不是使用全局,那么您應該對這些元素使用數據綁定:
var text = g.append("text")
.datum({isClicked: false})
.text("Click me")
...
function mouseout(p){
// p is the data-bound object
if(!p.isClicked) {
var className = d3.select(this).attr("class");
d3.selectAll("circle."+className).classed("hide", true);
}
}
function click(p){
// on click edit the data-bound object
p.isClicked = !p.isClicked;
var className = d3.select(this).attr("class");
d3.selectAll("circle."+className).classed("hide", false);
}
這里更新了小提琴。
這是一個沒有任何“旗幟”的答案:
鑒於您有許多標簽,一個選項是刪除單擊元素的mouseout
:
d3.select(this).on("mouseout", null);
這是您更新的小提琴: https : //jsfiddle.net/gerardofurtado/38p18pLt/
和Stack片段中的相同代碼:
var svg = d3.select("body") .append("svg") .attr("width", 600) .attr("height", 400); var g = svg.append("g"); var text = g.append("text") .text("Click me") .style("fill", "Blue") .attr("x", 50) .attr("y", 50) .classed("someClass", true) .on("mouseover", mouseover) .on("mouseout", mouseout) .on("click", click); var text2 = g.append("text") .text("Click me") .style("fill", "Blue") .attr("x", 50) .attr("y", 150) .classed("someClass2", true) .on("mouseover", mouseover) .on("mouseout", mouseout) .on("click", click); var circle = g.append("circle") .style("fill", "Orange") .attr("cx", 150) .attr("cy", 90) .attr("r", 15) .classed("hide", true) .classed("someClass", true); var circle2 = g.append("circle") .style("fill", "Green") .attr("cx", 250) .attr("cy", 90) .attr("r", 15) .classed("hide", true) .classed("someClass2", true); function mouseover(p) { var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", false); } function mouseout(p) { var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", true); } function click(p) { d3.select(this).on("mouseout", null); var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", false); }
.hide { display: none; } text { cursor: pointer; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
您還可以切換單擊,使mouseout
再次工作:
if(d3.select(this)[0][0].__onmouseout){
d3.select(this).on("mouseout", null);
} else {
d3.select(this).on("mouseout", mouseout);
}
這是“切換”功能的小提琴: https : //jsfiddle.net/gerardofurtado/4zb9gL9r/1/
和Stack片段中的相同代碼:
var svg = d3.select("body") .append("svg") .attr("width", 600) .attr("height", 400); var g = svg.append("g"); var text = g.append("text") .text("Click me") .style("fill", "Blue") .attr("x", 50) .attr("y", 50) .classed("someClass", true) .on("mouseover", mouseover) .on("mouseout", mouseout) .on("click", click); var text2 = g.append("text") .text("Click me") .style("fill", "Blue") .attr("x", 50) .attr("y", 150) .classed("someClass2", true) .on("mouseover", mouseover) .on("mouseout", mouseout) .on("click", click); var circle = g.append("circle") .style("fill", "Orange") .attr("cx", 150) .attr("cy", 90) .attr("r", 15) .classed("hide", true) .classed("someClass", true); var circle2 = g.append("circle") .style("fill", "Green") .attr("cx", 250) .attr("cy", 90) .attr("r", 15) .classed("hide", true) .classed("someClass2", true); function mouseover(p) { var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", false); } function mouseout(p) { var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", true); } function click(p) { if (d3.select(this)[0][0].__onmouseout) { d3.select(this).on("mouseout", null); } else { d3.select(this).on("mouseout", mouseout); } var className = d3.select(this).attr("class"); d3.selectAll("circle." + className).classed("hide", false); }
.hide { display: none; } text { cursor: pointer; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
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