SVG d3 | can I add inline style dynamically?

Question

I need to add an inline style to my SVG dynamically. I have 1000+ SVG charts that I must save as PNGs. These will then be hosted for the end customer (who is not allowed to see the full data behind the charts). When I convert the charts they must keep their formatting.

The SVGs will be added dynamically and I need to add the (same) style declaration to each one. This is ugly but only temporary till I generate the PNGs. I've got inline style / export working manually.

My latest effort is this:

addStyle(svg);

function addStyle(svg) {

  var style = svg.append("style")
    .attr("type","text/css")
    .attr("float","left");
}

It adds a style /style element but within comments. And it ignores the float: left; whether I add it as .attr() or .style().

EDIT: added CSS code. The CSS I need to add is this for the charts:

g.axis path {
    fill: none;
    stroke: dimgray;
    stroke-width: 0.5px;

}
g.axis g.tick line {
    stroke: dimgray;
    stroke-width: 1px;
}

g.grid g.tick line {
    stroke: lightgray;
    stroke-width: 0.5px;
}

path.lineF.cons,
path.line.cons {
    stroke: white;
    fill: none;
    stroke-width: 2px;
}


text.import {
    fill: #FF376F; /* pink */
}


rect.import {
    fill: #FF376F; /* pink */
    stroke: white;
    stroke-width: 1px;
    cursor: pointer;

}
text.export {
    fill: #0F86FF;/* blue */

}

rect.export {
    fill: #0F86FF;/* blue */
    stroke: white;
    stroke-width: 1px;
    cursor: pointer;

}

rect.prod2.area,
path.area {
    fill: #0F86FF;
    opacity: 0.8;
}

path.areaF.prod,
rect.prod.area,
path.area.prod {
    fill: black;
    opacity: 0.4;
}

div.chart {
    width: 100%;
}

div.chart svg#svg2 {
    width: 100%;
    height: 20000px;
}

div.chart svg {
    width: 100%;
    height: 15000px;
}

text {
    fill: dimgray;
/*  font-size: 14px; */
    font-size: 90%;
/*  font-size: 1vw; */
}


text.title {
/*  font-size: 20px; */
    font-size: 130%;
    font-size: 1.4vw;
    fill: dimgray;
}


text.titleMain {
    fill: white;
    font-size: 28px;
/*
    font-size: 2.5%;
    font-size: 2.5vw;
*/
}

text.label {
    font-size: 12px;
}

rect.titleRect {
    fill: #1D5185;
}


text.source {
    font-size: 9pt;
    fill: gainsboro;
    font-style: italic;
}

rect.opRate {
    fill: black;
    opacity: 0.6;
}

path.line.opRate {
    stroke: #B7FF0F; /* lime */
    stroke-width: 3px;
    fill: none;
}

text.opRate {
    fill: #B7FF0F;
}


path.arP2 {
    stroke-width: 2px;
    fill: none;
    stroke: black;
}


text.gr0 {
    fill: #0F86FF;
}

text.gr2 {
    fill: #FF376F;
}

text.gr1 {
    fill: #06B04A;

}

path.gr0 {
    stroke: #0F86FF;
    stroke-width: 2px;
    fill: none;
}
path.gr2 {
    stroke: #FF376F;
    stroke-width: 2px;
    fill: none;
}
path.gr1 {
    stroke: #06B04A;
    stroke-width: 2px;
    fill: none;
}

rect.negativeGrowth {
    fill: black;
    opacity: 0.1;
}

For the tables, the CSS is this:

text.source {
    font-size: 9pt;
    fill: gainsboro;
    font-style: italic;
}



rect.th {
    fill: #0F86FF;
    stroke: white;
    stroke-width: 1px;
}

rect.td {
    stroke: white;
    stroke-width: 1px;
    fill: #C8E0F9;
}

text.tdLabel {

    fill: black;
}

text.th {
    fill: white;
}

text.tableTitle {
    fill: #1D5185;
    font-size: 1.5%;
    font-size: 1.5vw;
}

Is it possible to do what I'm trying to do?

Answer 1

svg.append("style").text(cssText)

should do it. Where cssText would be a string containing all your CSS.

that creates a style tag in the DOM and sets its text content to be the CSS you need.