D3 - Mouseover rect width












1















I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html



I have a mouseover event when hovering over the bars



I trying to get the width and x pos of the bar when over it so I can position the tooltip



How can I get the width and x pos when over the bar.



Is this a problem with 'this' in Angular



d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {

const xPos = d3.select(this).attr('x');
const rectWidth = d3.select(this).attr('width');

console.log(xPos)

let html = ''
html += '<div class="">'+d.color+'</div>'
html += '<div class="tooltip-block">'+d.day+'</div>'

d3.select('.chart-tooltip')
.style("left", d3.event.pageX + 5 + "px")
.style("top", d3.event.pageY - 25 + "px")
.html(html)

d3.select('.chart-tooltip').style("display", null)
})

.on("mouseout", ()=>{
d3.select('.chart-tooltip').style("display", "none")
.transition()
.duration(500)
})









share|improve this question























  • First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

    – CRayen
    Nov 20 '18 at 12:48











  • This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

    – ttmt
    Nov 20 '18 at 13:13











  • What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

    – Zim
    Nov 20 '18 at 13:23













  • Using a normal function I cant access things like this.margin.top. I'll post a separate question

    – ttmt
    Nov 20 '18 at 13:27











  • As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

    – David Lemon
    Nov 20 '18 at 14:03
















1















I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html



I have a mouseover event when hovering over the bars



I trying to get the width and x pos of the bar when over it so I can position the tooltip



How can I get the width and x pos when over the bar.



Is this a problem with 'this' in Angular



d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {

const xPos = d3.select(this).attr('x');
const rectWidth = d3.select(this).attr('width');

console.log(xPos)

let html = ''
html += '<div class="">'+d.color+'</div>'
html += '<div class="tooltip-block">'+d.day+'</div>'

d3.select('.chart-tooltip')
.style("left", d3.event.pageX + 5 + "px")
.style("top", d3.event.pageY - 25 + "px")
.html(html)

d3.select('.chart-tooltip').style("display", null)
})

.on("mouseout", ()=>{
d3.select('.chart-tooltip').style("display", "none")
.transition()
.duration(500)
})









share|improve this question























  • First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

    – CRayen
    Nov 20 '18 at 12:48











  • This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

    – ttmt
    Nov 20 '18 at 13:13











  • What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

    – Zim
    Nov 20 '18 at 13:23













  • Using a normal function I cant access things like this.margin.top. I'll post a separate question

    – ttmt
    Nov 20 '18 at 13:27











  • As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

    – David Lemon
    Nov 20 '18 at 14:03














1












1








1








I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html



I have a mouseover event when hovering over the bars



I trying to get the width and x pos of the bar when over it so I can position the tooltip



How can I get the width and x pos when over the bar.



Is this a problem with 'this' in Angular



d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {

const xPos = d3.select(this).attr('x');
const rectWidth = d3.select(this).attr('width');

console.log(xPos)

let html = ''
html += '<div class="">'+d.color+'</div>'
html += '<div class="tooltip-block">'+d.day+'</div>'

d3.select('.chart-tooltip')
.style("left", d3.event.pageX + 5 + "px")
.style("top", d3.event.pageY - 25 + "px")
.html(html)

d3.select('.chart-tooltip').style("display", null)
})

.on("mouseout", ()=>{
d3.select('.chart-tooltip').style("display", "none")
.transition()
.duration(500)
})









share|improve this question














I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html



I have a mouseover event when hovering over the bars



I trying to get the width and x pos of the bar when over it so I can position the tooltip



How can I get the width and x pos when over the bar.



Is this a problem with 'this' in Angular



d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {

const xPos = d3.select(this).attr('x');
const rectWidth = d3.select(this).attr('width');

console.log(xPos)

let html = ''
html += '<div class="">'+d.color+'</div>'
html += '<div class="tooltip-block">'+d.day+'</div>'

d3.select('.chart-tooltip')
.style("left", d3.event.pageX + 5 + "px")
.style("top", d3.event.pageY - 25 + "px")
.html(html)

d3.select('.chart-tooltip').style("display", null)
})

.on("mouseout", ()=>{
d3.select('.chart-tooltip').style("display", "none")
.transition()
.duration(500)
})






javascript angular d3.js






share|improve this question













share|improve this question











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asked Nov 20 '18 at 12:31









ttmtttmt

2,0721152101




2,0721152101













  • First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

    – CRayen
    Nov 20 '18 at 12:48











  • This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

    – ttmt
    Nov 20 '18 at 13:13











  • What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

    – Zim
    Nov 20 '18 at 13:23













  • Using a normal function I cant access things like this.margin.top. I'll post a separate question

    – ttmt
    Nov 20 '18 at 13:27











  • As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

    – David Lemon
    Nov 20 '18 at 14:03



















  • First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

    – CRayen
    Nov 20 '18 at 12:48











  • This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

    – ttmt
    Nov 20 '18 at 13:13











  • What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

    – Zim
    Nov 20 '18 at 13:23













  • Using a normal function I cant access things like this.margin.top. I'll post a separate question

    – ttmt
    Nov 20 '18 at 13:27











  • As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

    – David Lemon
    Nov 20 '18 at 14:03

















First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48





First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48













This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13





This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13













What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23







What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23















Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27





Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27













As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03





As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03












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