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I’ve a Java String with new lines(\n), say for example
String value = "This is a variable\n\nfrom\nJava";
Now I’ve to set this to a Javascript variable in a JSP file,
<script>var val = '<%= value %>';</script>
But because of the new lines in the above line, I’m getting javascript error “Unterminated String”.
Please help me.
Newlines will be only one issue. To properly escape the string for display as a JavaScript literal, you have to handle newlines and a wide variety of other characters (not least backslashes and whatever quotes you’re using). This isn’t hard, but it’s non-trivial. Effectively you need to search the string for a range of values (regular expressions are useful here) and substitute the JavaScript escape code (
\n, etc.) for it. To avoid charset issues, when doing this sort of thing I escape anything that isn’t ASCII into either the JavaScript named escape (\n) or a Unicode escape (\u1234).