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Поддержка for(i in object) в IE7 и IE8


freeneutron
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for...in Statement

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards. Also supported in Windows Store apps. See Version Information.

©ссылко
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Немножко не в тему.

1. Создаем собственный конструктор, в прототипе заводим два свойства, создаем объект, пытаемся распечатать с помощью for in, все OK

2. Добавляем в объект собственное свойство (одноименное со свойством из прототипа). Распечатываем, все OK

3. Удаляем собственное свойство, распечатываем. В нормальных браузерах распечатываются оба свойства из прототипа, как и должно быть. В IE 6 - только одно. А как в IE 7, 8, ...? У меня их нет, попробовать негде.


function MyObj() {}
MyObj.prototype.a = 1;
MyObj.prototype.b = 2;

var test = new MyObj();
for( var i in test )
document.write( "test["+i+"]="+test[i]+"<br>" );
test.a = 100;
for( var i in test )
document.write( "test["+i+"]="+test[i]+"<br>" );
delete test.a;
for( var i in test )
document.write( "test["+i+"]="+test[i]+"<br>" );

Edited by rgl
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