Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
escape() is not
strictly deprecated (as in "removed from the Web standards"), it is defined in
of the ECMA-262 standard, whose introduction states:
… All of the language features and behaviors specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification. … … Programmers should not use or assume the existence of these features and behaviors when writing new ECMAScript code. …
escape() function computes a
new string in which certain characters have been replaced by a hexadecimal escape
Note: This function was used mostly for URL queries (the part of a
?)—not for escaping ordinary String literals,
which use the format
two hexadecimal digits, and the form
used for higher-plane Unicode characters.)
Escaped characters in String literals can be expanded by replacing the
%, then using the
A string to be encoded.
A new string in which certain characters have been escaped.
escape function is a property of the global object. Special
characters are encoded with the exception of:
The hexadecimal form for characters, whose code unit value is
less, is a two-digit escape sequence:
%xx. For characters with a
greater code unit, the four-digit format
escape('abc123'); // "abc123" escape('äöü'); // "%E4%F6%FC" escape('ć'); // "%u0107" // special characters escape('@*_+-./'); // "@*_+-./"
|ECMAScript Language Specification |
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