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The <string>
CSS data type represents a string. It is formed by a Unicode characters delimited by either double (") or single (') quotes. A double quoted string cannot contain double quotes unless escaped using a backslash (\). The same practice applies for single quoted strings, they cannot contain single quotes unless escaped using a backslash (\). The backslash character must be escaped to be part of the string.
New lines are not accepted unless escaped by using a line feed character such as \A or \00000a. However, strings can span over several lines. In that case, the new line must be escaped using a \ as the last character of the line.
Characters can be described using their Unicode code point in hexadecimal, when escaped using \. \27 represents the single quote (').
Examples
/* Simple quote escaping */ "Awesome string with double quotes" "Awesome string with \" escaped double quotes" 'Awesome string with single quotes' "Awesome string with \' escaped single quotes" /* New line in a string */ "Awesome string with \Aline break" /* String spanning over two lines (these two strings are exactly the same) */ "A really long \ awesome string" "A really long awesome string"
Specifications
Specification | Status | Comment |
---|---|---|
CSS Values and Units Module Level 3 The definition of '<string>' in that specification. |
Candidate Recommendation | No significant change from CSS Level 2 (Revision 1) |
CSS Level 2 (Revision 1) The definition of '<string>' in that specification. |
Recommendation | Explicitly defined; allows 6-digit Unicode escaped characters |
CSS Level 1 The definition of '<string>' in that specification. |
Recommendation | Implicitly defined; allows 4-digit Unicode escaped characters |
Browser Compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 1.0 | 1.0 (1.0) | (Yes) | (Yes) | 1.0 (85) |
\xx | 1.0 | 1.0 (1.0) | 6.0 | (Yes) | 1.0 (85) |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
\xx | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |