Test which characters in javascript are OK in variable names

gistfile1.js

// Easier than looking up in documentation... :-)

function test(chars) {
    for (var i = 0; i < chars.length; i++) {
        testSole(chars[i]);
        testStart(chars[i]);
        testMiddle(chars[i]);
    }
    
    function testSole(c) {
        doTest(c, c, "as sole character");
    }
    
    function testStart(c) {
        doTest(c, c + "good", "as starting character");
    }
    
    function testMiddle(c) {
        doTest(c, "good" + c + "good", "as middle character");
    }
    
    function doTest(char, key, description) {
        var ob = makeTestOb(key);
        var ok = false;
        try {
            ok = eval("ob." + key + "();");
        }
        catch (err) {
        }
        console.log(char + " is " + (ok ? "OK" : "broken") + " " + description);
    }
    
    function makeTestOb(key) {
        var res = {};
        res[key] = testFn;
        return res;
    }
    
    function testFn() {
        return true;
    }
}

test("$|~_-");