Question

I’m trying to keep a jslint exclusion as close to the error as possible to not hide any errors by mistake. The unused parameter in the example is x in function f2 and I would like to only exclude this occurrence.

The first example, excluding the surrounding function works, but will hide other errors if any:

/*jslint unparam: true*/
function test1() {
    var f1 = function (x) {
            alert(x);
        },
        f2 = function (x) {};

    f1(0);
    f2(0);
}
/*jslint unparam: false*/

Surrounding the var statement also works, but will hide errors in f1:

function test2() {
    /*jslint unparam: true*/
    var f1 = function (x) {
            alert(x);
        },
        f2 = function (x) {};
    /*jslint unparam: false*/

    f1(0);
    f2(0);
}

This one generates an error: “Expected an identifier and instead saw ‘/*jslint’ (a reserved word).”.

function test3() {
    var f1 = function (x) {
            alert(x);
        },
        /*jslint unparam: true*/
        f2 = function (x) {};
        /*jslint unparam: false*/

    f1(0);
    f2(0);
}

The question is, where in the source are you allowed to have jslint directives?

Answer 1

Only excluding one of the functions in the same var declaration is not possible. As said in the comment, only complete statements can have jslint directives; ended up with the following:

function test4() {
    var f1, f2;

    f1 = function (x) {
        alert(x);
    };

    /*jslint unparam: true*/
    f2 = function (x) {};
    /*jslint unparam: false*/

    f1(0);
    f2(0);
}