// Add two characters using scary black magic
spanText = $span.text();
d = findDivergenceIndex( origText, spanText );
- spanTextNew = spanText.substr( 0, d ) + origText[d] + origText[d] + '...';
+ spanTextNew = spanText.slice( 0, d ) + origText[d] + origText[d] + '...';
assert.gt( spanTextNew.length, spanText.length, 'Verify that the new span-length is indeed greater' );