CodeQL documentation

Missing space in string concatenation

ID: js/missing-space-in-concatenation
Kind: problem
Severity: warning
Precision: very-high
   - readability
Query suites:
   - javascript-security-and-quality.qls

Click to see the query in the CodeQL repository

Splitting a long string literal over multiple lines can often aid readability, but this also makes it difficult to notice whether a space is missing where the strings are concatenated.


Check the string literal to see whether it has the intended text. In particular, look for missing spaces near line breaks.


The following example shows a text literal that is split over two lines and omits a space character between the two words at the line break.

var s = "This text is" +
  "missing a space.";