右键单击d3.js元素：如何防止出现浏览器上下文菜单

I have some d3.js element plotted, eg:

 // draw rectangle 
  svg.selectAll(".rect").append("rect")
        .attr("y", 10)
        .attr("x", 10)
        .attr("height", 5)
        .attr("width", 5)
        .on("contextmenu", function (d, i) {  
    // react on right-clicking
 });

and it works fine but also opens browser's context menu. How I can prevent that from happening?

Add d3.event.preventDefault(); to your function.

 // draw rectangle 
  svg.selectAll(".rect").append("rect")
        .attr("y", 10)
        .attr("x", 10)
        .attr("height", 5)
        .attr("width", 5)
        .on("contextmenu", function (d, i) {
            d3.event.preventDefault();
           // react on right-clicking
        });

I understood and giving below code for you, check it and ask if you need any thing more...

document.onmousedown=disableclick;
status="Right Click Disabled";
Function disableclick(event)
{
  if(event.button==2)
   {
     alert(status);
     return false;    
   }
}