I'm using regex in JavaScript to split a long string and force a word wrap, but learned that some browsers (Safari in particular) don't support positive lookbehinds. Is there a more browser-friendly way to get the same result as this:
if (text.length > 45) {
return text.split(/(?<=^(?:.{45})+)(?!$)/).join("\r\n");
}
Use
return text.replace(/(.{45})(?!$)/g, "$1\r\n");
See regex proof.
EXPLANATION
NODE EXPLANATION
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( group and capture to \1:
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.{45} any character except \n (45 times)
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) end of \1
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(?! look ahead to see if there is not:
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$ before an optional \n, and the end of
the string
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) end of look-ahead