Javascript 実装状況と深刻なバグ

(function(){
    var a = {};
    (function(){
        print('0:' + typeof document);
        print('1:' + typeof a, typeof a === 'object');
    })();
    print('2:' + typeof a, typeof a === 'object');
    (function(){
        print('3:' + typeof a, typeof a === 'object');
    })();
})();

(function(){
    var a = {};
    (function(){
        print('1:' + typeof a, typeof a === 'object');
    })();
    (function(){
        print('2:' + typeof a, typeof a === 'object');
    })();
    if(true){
        function b(){
            print('3:' + typeof a, typeof a === 'object');
            (function(){
                print('4:' + typeof a, typeof a === 'object');
            })();
            var c=0;
        };
    };
    b();
    (function(){
        print('5:' + typeof a, typeof a === 'object');
    })();

    (function(){
        a.d = function(){
            print('6:' + typeof a, typeof a === 'object');
        };
        a.d();
        a.e = function(f){
            print('7:' + f(), f() === 'object');
        };
        a.e(
            function(){
                return typeof a;
            }
        );
        (function(){
            print('8:' + typeof a, typeof a === 'object');
        })();
    })();
})();

(function(){
    var a = {}, i = 0;
    (function b(){
        print(++i + ':' + typeof a, typeof a === 'object');
        print(++i + ':' + typeof b, typeof b === 'function');
    })();
    shouldThrowError = true;
    b();
})();

var Y, db, F = window;
(function(qa){
    (Y = function(I) {
        qa(I);
    });
    function _(){};
})(print);
Y('1 : Good!');

(function(qa){
    Y = function(I) {
        qa(I);
    };
    // function _(){};
})(print);
Y('2 : Good!');

(function(qa){
    (Y = function(I) {
        qa(I);
    });
    // function _(){};
})(print);
Y('3 : Good!');

a:{
    // syntax error in Opera 7.x
    print('Good!');
};

(function(){
    // error in Opera 7.03
    print('Good!');
})();

print('1:uneval()', typeof window.uneval === 'function');

print('1:' + typeof null, typeof null === 'object');

print('1:' + ({} instanceof Object), {} instanceof Object);
print('2:' + (null instanceof Object), !(null instanceof Object));

try {
    print('Try!');
} catch(O_o){
    throw new Error('...');
}
print('Good!');

print('1:' + ('toString' in {}), 'toString' in {});
print('2:' + ('length' in []), 'length' in []);
print('3:' + ('length' in {}), !('length' in {}));

var key;
for(key in null){};
print('Good!');

var re = /reg/;
print('Good!');

var re = /reg/gi;
print('Good!');

var re = /reg/m;
print('Good!');

var re = /reg/y;
print('Good!');

print('1: Object.prototype.__proto__', {}.__proto__ === Object.prototype);

print('1: Object.prototype.watch', typeof Object.prototype.watch === 'function');
print('2: Object.prototype.unwatch', typeof Object.prototype.unwatch === 'function');

print('1: Object.prototype.__defineGetter__', typeof Object.prototype.__defineGetter__ === 'function');
print('2: Object.prototype.__defineSetter__', typeof Object.prototype.__defineSetter__ === 'function');
print('3: Object.prototype.__lookupGetter__', typeof Object.prototype.__lookupGetter__ === 'function');
print('4: Object.prototype.__lookupSetter__', typeof Object.prototype.__lookupSetter__ === 'function');

var obj = {1: 'Good!'};
print('1:' + obj[1]);

var obj = {'1': 'Good!'};
print('1:' + obj[1]);

var obj = {'': 'Good!'};
print('1:' + obj[''], obj[''] === 'Good!');
obj[''] = 'Good!';
print('2:' + obj[''], obj[''] === 'Good!');
obj= {'': 'Good!'};
print('3:' + obj[''], obj[''] === 'Good!');
for(var k in obj){
    print('4:{"' + k + '" : "' + obj[k] + '"}', k === '');
};

var str = 'Good!';
print('1:' + str[0] + str[1] + str[2] + str[3] + str[4], str[0] === 'G');

window.__apply = Function.prototype;
print('1:' + ('' + window));
print('2:' + (typeof window.__apply), typeof window.__apply === 'function');
print('3:' + (delete window.__apply));
print('4:' + window.__apply, window.__apply === void 0);

window.frames[0].__apply = Function.prototype;
print('1:' + ('' + window.frames[0]));
print('2:' + (typeof window.frames[0].__apply), typeof window.frames[0].__apply === 'function');
print('3:' + (delete window.frames[0].__apply));
print('4:' + window.frames[0].__apply, window.frames[0].__apply === void 0);

document.__apply = Function.prototype;
print('1:' + ('' + document));
print('2:' + (typeof document.__apply), typeof document.__apply === 'function');
print('3:' + (delete document.__apply));
print('4:' + document.__apply, document.__apply === void 0);

(function(){
var element = document.createElement('span');
element.__apply = Function.prototype;
print('1:' + ('' + element));
print('2:' + (typeof element.__apply), typeof element.__apply === 'function');
print('3:' + (delete element.__apply));
print('4:' + element.__apply, element.__apply === void 0);
})();

print('1:atob', !!window.atob);
print('2:btoa', !!window.btoa);

print('1:encodeURI', !!window.encodeURI);
print('2:decodeURI', !!window.decodeURI);
print('3:encodeURIComponent', !!window.encodeURIComponent);
print('4:decodeURIComponent', !!window.decodeURIComponent);

print('1:JSON', !!window.JSON);

Function.prototype();
print('Good!');

print('1:Function.prototype.apply', typeof Function.prototype.apply === 'function');
print('1:Function.prototype.call', typeof Function.prototype.call === 'function');

print('1:Array.prototype.push', typeof Array.prototype.push === 'function');
print('1:Array.prototype.pop', typeof Array.prototype.pop === 'function');
print('1:Array.prototype.shift', typeof Array.prototype.shift === 'function');
print('1:Array.prototype.unshift', typeof Array.prototype.unshift === 'function');
print('1:Array.prototype.splice', typeof Array.prototype.splice === 'function');
print('1:Array.prototype.indexOf', typeof Array.prototype.indexOf === 'function');

var a = [];
shouldThrowError = true;
--a.length;
print('1:(--a.length)=' + a.length, a.length=== 0);

print('document.compatMode:' + document.compatMode);
print('window.scrollY:' + window.scrollY);
print('window.pageYOffset:' + window.pageYOffset);
var html = document.documentElement || document.getElementsByTagName('html');
print('html.scrollTop:' + html.scrollTop);
print('body.scrollTop:' + document.body.scrollTop);

print('document.compatMode:' + document.compatMode);
print('window.innerHeight:' + window.innerHeight);
var html = document.documentElement || document.getElementsByTagName('html');
print('html.offsetHeight:' + html.offsetHeight);
print('body.offsetHeight:' + document.body.offsetHeight);

print('document.compatMode:' + document.compatMode);
var html = document.documentElement || document.getElementsByTagName('html');
var body = document.body;
print('html.offsetHeight:' + html.offsetHeight);
print('html.scrollHeight:' + html.scrollHeight);
print('body.offsetHeight:' + document.body.offsetHeight);
print('body.scrollHeight:' + document.body.scrollHeight);
if( body.getBoundingClientRect ){
    var rect = html.getBoundingClientRect();
    print('html:' + (rect.bottom - rect.top));
    var rect = body.getBoundingClientRect();
    print('body:' + (rect.bottom - rect.top));
};

(function(){
function extend(a){
a.__apply = Function.prototype;
print('- ' + a);
print('1:' + a.__apply, a.__apply === void 0);
print('2: delete a.__apply', delete a.__apply === true);
print('3:' + a.__apply, a.__apply === void 0);
};
extend(0);
extend('A');
extend(NaN);
extend(Infinity);
})();

(function(){
function extend(a){
a.constructor.prototype.__apply = Function.prototype;
print('- ' + a);
print('1:' + (typeof a.__apply), typeof a.__apply === 'function');
print('2: delete a.__apply', delete a.__apply === true);
print('3:' + a.__apply, ('' + a.__apply).split('\n').join('').split('\r').join('').split(' ').join('') === 'function(){[nativecode]}');
print('4: delete a.constructor.prototype.__apply', (delete a.constructor.prototype.__apply) === true);
print('5:' + a.__apply, a.__apply === void 0);
};
extend(0);
extend('A');
extend(NaN);
extend(Infinity);
})();

(function(){
var a = {};
a.__apply = Function.prototype;
print('- ' + a);
print('1: delete a.__bad__', delete a.__bad__ === true);
print('2: delete a.__apply', delete a.__apply === true);
})();

print('1:' + window.addEventListener);
print('2:' + document.addEventListener);
print('3:' + document.body.addEventListener);

print('1:' + document.body.firstChild);
print('2:' + document.body.lastChild);
print('3:' + document.body.previousSibling);
print('4:' + document.body.nextSibling);
print('5:' + document.body.parentNode);
print('6:' + document.body.parentElement);
print('7:' + document.body.lastChild.previousSibling);
print('8:' + document.body.childNodes);
print('9:' + document.body.children);

(function(){
var noscripts = document.getElementsByTagName('noscript');
var noscript = noscripts[noscripts.length-1];
print('1:' + noscript.innerHTML);
print('2:' + noscript.innerText);
print('3:' + noscript.textContent);
print('4:' + (noscript.firstChild ? noscript.firstChild.data : ''));
print('5:' + (noscript.firstChild ? noscript.firstChild.textContent : ''));
print('6:' + (noscript.firstChild ? noscript.firstChild.nodeValue : ''));
print('7:' + (noscript.firstChild ? noscript.firstChild.wholeText : ''));
})();