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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Obsolete since Gecko 31 (Firefox 31 / Thunderbird 31 / SeaMonkey 2.28)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Summary
Returns the window to the previous item in the history. This was a Gecko-specific method. Use the standard history.back method instead.
Syntax
window.back()Example
function goBack() {
if ( canGoBack ) window.back();
}
Specification
This is not part of any specification.