如何在d3中获取变量属性

Question

How do I return a specific attribute of a variable using d3?

For example, I want to select an element by mouseover, and pass on the selection to a function, but only if the element's id is a particular name.

Something like this?

d3.select("body").on("mouseover", function(){ 
    if (d3.select(this).attr("id") == "correct") {
        enableInteraction(d3.select(this));
    }
});

Answer 1

Yes. Select this and then use the usual functions to access properties.