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How can I remove or replace SVG content?

I have a piece of JavaScript code which creates (using D3.js) an svg element which contains a chart. I want to update the chart based on new data coming from a web service using AJAX, the problem is that each time I click on the update button, it generates a new svg, so I want to remove the old one or update its content.

Here is a snippet from the JavaScript function where I create the svg:

var svg ="body")
        .attr("width", w)
        .attr("height", h);

How can I remove the old svg element or at least replace its content?


Here is the solution:"svg").remove();

This is a remove function provided by D3.js.