attrSet method

Selection attrSet(String name, Union2<EachCallback<String?>, String>? value)

Sets the attribute with the specified name to the specified value on the selected elements and returns this selection.

selection.attrSet("color", "red".u22);

If the value is a constant, all elements are given the same attribute value; otherwise, if the value is a function, it is evaluated for each selected element, in order, being passed the current datum (d), the current index (i), and the current group (nodes), with thisArg as the current DOM element (nodes[i]). The function’s return value is then used to set each element’s attribute. A null value will remove the specified attribute.

Implementation

Selection attrSet(String name, Union2<EachCallback<String?>, String>? value) {
  var fullname = g.namespace(name);

  return each(
    value?.split(
          (callback) => fullname.split(
            (fullname) => attrFunctionNS(fullname, callback),
            (name) => attrFunction(name, callback),
          ),
          (value) => fullname.split(
            (fullname) => attrConstantNS(fullname, value),
            (name) => attrConstant(name, value),
          ),
        ) ??
        fullname.split(
          (fullname) => attrRemoveNS(fullname),
          (name) => attrRemove(name),
        ),
  );
}