Kontrollerar ifall Javascript-koden är korrekt enligt Webperf-communityts egna Javascript-test. Testet är ett "lint"-test för att avgöra om det är korrekt Javascript och följer webbstandard.
Betyg: 2.61 av 5
- JS är dålig.
Webbstandard
- `< script>` in: #1: Webbsida , antal grupperade fel: 3 ( 4.40 betyg )
- `< script>` in: #1: Webbsida , antal fel: 38 ( 1.00 betyg )
- X is not defined. (totalt 36 st)
- Unexpected console statement. (totalt 1 st)
- X is defined but never used. (totalt 1 st)
- `< script src="...">` in: #1: Webbsida , antal grupperade fel: 4 ( 4.20 betyg )
- `< script src="...">` in: #1: Webbsida , antal fel: 298 ( 1.00 betyg )
- X is not defined. (totalt 155 st)
- X is defined but never used. (totalt 126 st)
- Unexpected console statement. (totalt 13 st)
- Parsing error: X in strict mode (totalt 4 st)
- `< script>` in: #21: BWodX9v7QXI, antal grupperade fel: 1 ( 4.80 betyg )
- `< script>` in: #21: BWodX9v7QXI, antal fel: 2 ( 4.60 betyg )
- X is not defined. (totalt 2 st)
- `< script>` in: #38: k-cu4wDfazo, antal grupperade fel: 1 ( 4.80 betyg )
- `< script>` in: #38: k-cu4wDfazo, antal fel: 2 ( 4.60 betyg )
- X is not defined. (totalt 2 st)
- `content-type=".*javascript.*"` in: #19: gtm.js, antal grupperade fel: 3 ( 4.40 betyg )
- `content-type=".*javascript.*"` in: #19: gtm.js, antal fel: 443 ( 1.00 betyg )
- X is defined but never used. (totalt 363 st)
- X is assigned a value but never used. (totalt 70 st)
- X is not defined. (totalt 10 st)
- `content-type=".*javascript.*"` in: #62: www-embed-playe, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #62: www-embed-playe, antal fel: 538 ( 1.00 betyg )
- X is defined but never used. (totalt 447 st)
- X is assigned a value but never used. (totalt 74 st)
- X is not defined. (totalt 12 st)
- Unexpected console statement. (totalt 5 st)
- `content-type=".*javascript.*"` in: #63: base.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #63: base.js, antal fel: 768 ( 1.00 betyg )
- X is defined but never used. (totalt 651 st)
- X is assigned a value but never used. (totalt 86 st)
- X is not defined. (totalt 16 st)
- Unexpected console statement. (totalt 15 st)
- `content-type=".*javascript.*"` in: #64: embed.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #64: embed.js, antal fel: 769 ( 1.00 betyg )
- X is defined but never used. (totalt 651 st)
- X is assigned a value but never used. (totalt 86 st)
- X is not defined. (totalt 17 st)
- Unexpected console statement. (totalt 15 st)
- `content-type=".*javascript.*"` in: #65: base.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #65: base.js, antal fel: 999 ( 1.00 betyg )
- X is defined but never used. (totalt 855 st)
- X is assigned a value but never used. (totalt 98 st)
- Unexpected console statement. (totalt 25 st)
- X is not defined. (totalt 21 st)
- `content-type=".*javascript.*"` in: #68: ad-status.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #68: ad-status.js, antal fel: 999 ( 1.00 betyg )
- X is defined but never used. (totalt 855 st)
- X is assigned a value but never used. (totalt 98 st)
- Unexpected console statement. (totalt 25 st)
- X is not defined. (totalt 21 st)
- `content-type=".*javascript.*"` in: #69: ad-status.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #69: ad-status.js, antal fel: 999 ( 1.00 betyg )
- X is defined but never used. (totalt 855 st)
- X is assigned a value but never used. (totalt 98 st)
- Unexpected console statement. (totalt 25 st)
- X is not defined. (totalt 21 st)
- `content-type=".*javascript.*"` in: #70: remote.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #70: remote.js, antal fel: 1084 ( 1.00 betyg )
- X is defined but never used. (totalt 882 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 78 st)
- Unexpected console statement. (totalt 25 st)
- `content-type=".*javascript.*"` in: #71: rqDMfREJsMUq8q-, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #71: rqDMfREJsMUq8q-, antal fel: 1084 ( 1.00 betyg )
- X is defined but never used. (totalt 882 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 78 st)
- Unexpected console statement. (totalt 25 st)
- `content-type=".*javascript.*"` in: #81: cast-sender.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #81: cast-sender.js, antal fel: 1088 ( 1.00 betyg )
- X is defined but never used. (totalt 886 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 78 st)
- Unexpected console statement. (totalt 25 st)
- `content-type=".*javascript.*"` in: #85: captions.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #85: captions.js, antal fel: 1093 ( 1.00 betyg )
- X is defined but never used. (totalt 890 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 79 st)
- Unexpected console statement. (totalt 25 st)
- `content-type=".*javascript.*"` in: #86: endscreen.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #86: endscreen.js, antal fel: 1094 ( 1.00 betyg )
- X is defined but never used. (totalt 890 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 80 st)
- Unexpected console statement. (totalt 25 st)
- `content-type=".*javascript.*"` in: #95: cast-sender.js, antal grupperade fel: 4 ( 4.20 betyg )
- `content-type=".*javascript.*"` in: #95: cast-sender.js, antal fel: 1103 ( 1.00 betyg )
- X is defined but never used. (totalt 898 st)
- X is assigned a value but never used. (totalt 99 st)
- X is not defined. (totalt 80 st)
- Unexpected console statement. (totalt 26 st)
Integritet & säkerhet
- `< script>` in: #1: Webbsida , antal grupperade fel: 4 ( 4.20 betyg )
- `< script>` in: #1: Webbsida , antal fel: 14 ( 2.20 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 8 st)
- Expected X and instead saw X. (totalt 4 st)
- Unnecessary escape character: \'. (totalt 1 st)
- Unnecessary escape character: \/. (totalt 1 st)
- `< script src="...">` in: #1: Webbsida , antal grupperade fel: 20 ( 1.00 betyg )
- `< script src="...">` in: #1: Webbsida , antal fel: 2717 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 1683 st)
- Expected X and instead saw X. (totalt 891 st)
- Do not access Object.prototype method X from target object. (totalt 36 st)
- Unnecessary X. (totalt 15 st)
- X is not modified in this loop. (totalt 13 st)
- Comparing to itself is potentially pointless. (totalt 12 st)
- The Function constructor is eval. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 10 st)
- Unnecessary escape character: \/. (totalt 9 st)
- Async arrow function has no X expression. (totalt 9 st)
- X is assigned to itself. (totalt 7 st)
- Unsafe usage of ThrowStatement. (totalt 6 st)
- Parsing error: X in strict mode (totalt 4 st)
- Script URL is a form of eval. (totalt 2 st)
- Unnecessary escape character: \=. (totalt 2 st)
- Unexpected string concatenation of literals. (totalt 2 st)
- Unnecessary escape character: \.. (totalt 1 st)
- Unnecessary escape character: \[. (totalt 1 st)
- Unnecessary escape character: \^. (totalt 1 st)
- Unnecessary escape character: \+. (totalt 1 st)
- `< script>` in: #21: BWodX9v7QXI, antal grupperade fel: 1 ( 4.80 betyg )
- `< script>` in: #21: BWodX9v7QXI, antal fel: 4 ( 4.20 betyg )
- Expected X and instead saw X. (totalt 4 st)
- `< script>` in: #38: k-cu4wDfazo, antal grupperade fel: 1 ( 4.80 betyg )
- `< script>` in: #38: k-cu4wDfazo, antal fel: 4 ( 4.20 betyg )
- Expected X and instead saw X. (totalt 4 st)
- `content-type=".*javascript.*"` in: #19: gtm.js, antal grupperade fel: 10 ( 3.00 betyg )
- `content-type=".*javascript.*"` in: #19: gtm.js, antal fel: 1473 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 1138 st)
- Expected X and instead saw X. (totalt 224 st)
- Do not access Object.prototype method X from target object. (totalt 97 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \/. (totalt 3 st)
- X is assigned to itself. (totalt 3 st)
- Comparing to itself is potentially pointless. (totalt 1 st)
- Unnecessary escape character: \?. (totalt 1 st)
- Script URL is a form of eval. (totalt 1 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #62: www-embed-playe, antal grupperade fel: 13 ( 2.40 betyg )
- `content-type=".*javascript.*"` in: #62: www-embed-playe, antal fel: 3211 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 2292 st)
- Expected X and instead saw X. (totalt 757 st)
- Do not access Object.prototype method X from target object. (totalt 115 st)
- X is assigned to itself. (totalt 17 st)
- Unnecessary X. (totalt 11 st)
- Comparing to itself is potentially pointless. (totalt 6 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \/. (totalt 3 st)
- Unnecessary escape character: \-. (totalt 2 st)
- Unnecessary escape character: \?. (totalt 1 st)
- Script URL is a form of eval. (totalt 1 st)
- Unnecessary escape character: \}. (totalt 1 st)
- Unnecessary escape character: \(. (totalt 1 st)
- `content-type=".*javascript.*"` in: #63: base.js, antal grupperade fel: 17 ( 1.60 betyg )
- `content-type=".*javascript.*"` in: #63: base.js, antal fel: 14335 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 9806 st)
- Expected X and instead saw X. (totalt 4244 st)
- Do not access Object.prototype method X from target object. (totalt 157 st)
- X is assigned to itself. (totalt 46 st)
- Unnecessary X. (totalt 25 st)
- Comparing to itself is potentially pointless. (totalt 11 st)
- Unnecessary escape character: \?. (totalt 11 st)
- Unnecessary escape character: \/. (totalt 7 st)
- Unnecessary escape character: \-. (totalt 6 st)
- Unnecessary escape character: \.. (totalt 6 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \). (totalt 4 st)
- Script URL is a form of eval. (totalt 3 st)
- Unnecessary escape character: \(. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- Unnecessary escape character: \[. (totalt 1 st)
- Unnecessary escape character: \^. (totalt 1 st)
- `content-type=".*javascript.*"` in: #64: embed.js, antal grupperade fel: 17 ( 1.60 betyg )
- `content-type=".*javascript.*"` in: #64: embed.js, antal fel: 14421 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 9884 st)
- Expected X and instead saw X. (totalt 4252 st)
- Do not access Object.prototype method X from target object. (totalt 157 st)
- X is assigned to itself. (totalt 46 st)
- Unnecessary X. (totalt 25 st)
- Comparing to itself is potentially pointless. (totalt 11 st)
- Unnecessary escape character: \?. (totalt 11 st)
- Unnecessary escape character: \/. (totalt 7 st)
- Unnecessary escape character: \-. (totalt 6 st)
- Unnecessary escape character: \.. (totalt 6 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \). (totalt 4 st)
- Script URL is a form of eval. (totalt 3 st)
- Unnecessary escape character: \(. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- Unnecessary escape character: \[. (totalt 1 st)
- Unnecessary escape character: \^. (totalt 1 st)
- `content-type=".*javascript.*"` in: #65: base.js, antal grupperade fel: 17 ( 1.60 betyg )
- `content-type=".*javascript.*"` in: #65: base.js, antal fel: 25545 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17398 st)
- Expected X and instead saw X. (totalt 7739 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 75 st)
- Unnecessary X. (totalt 39 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \/. (totalt 11 st)
- Unnecessary escape character: \-. (totalt 10 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #68: ad-status.js, antal grupperade fel: 17 ( 1.60 betyg )
- `content-type=".*javascript.*"` in: #68: ad-status.js, antal fel: 25545 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17398 st)
- Expected X and instead saw X. (totalt 7739 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 75 st)
- Unnecessary X. (totalt 39 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \/. (totalt 11 st)
- Unnecessary escape character: \-. (totalt 10 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #69: ad-status.js, antal grupperade fel: 17 ( 1.60 betyg )
- `content-type=".*javascript.*"` in: #69: ad-status.js, antal fel: 25545 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17398 st)
- Expected X and instead saw X. (totalt 7739 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 75 st)
- Unnecessary X. (totalt 39 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \/. (totalt 11 st)
- Unnecessary escape character: \-. (totalt 10 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #70: remote.js, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #70: remote.js, antal fel: 26325 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17860 st)
- Expected X and instead saw X. (totalt 8048 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 80 st)
- Unnecessary X. (totalt 40 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- eval can be harmful. (totalt 1 st)
- `content-type=".*javascript.*"` in: #71: rqDMfREJsMUq8q-, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #71: rqDMfREJsMUq8q-, antal fel: 26343 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17866 st)
- Expected X and instead saw X. (totalt 8059 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 80 st)
- Unnecessary X. (totalt 40 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- eval can be harmful. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #81: cast-sender.js, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #81: cast-sender.js, antal fel: 26365 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 17877 st)
- Expected X and instead saw X. (totalt 8070 st)
- Do not access Object.prototype method X from target object. (totalt 199 st)
- X is assigned to itself. (totalt 80 st)
- Unnecessary X. (totalt 40 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- eval can be harmful. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #85: captions.js, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #85: captions.js, antal fel: 26779 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 18171 st)
- Expected X and instead saw X. (totalt 8186 st)
- Do not access Object.prototype method X from target object. (totalt 203 st)
- X is assigned to itself. (totalt 80 st)
- Unnecessary X. (totalt 40 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- eval can be harmful. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #86: endscreen.js, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #86: endscreen.js, antal fel: 26926 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 18282 st)
- Expected X and instead saw X. (totalt 8222 st)
- Do not access Object.prototype method X from target object. (totalt 203 st)
- X is assigned to itself. (totalt 80 st)
- Unnecessary X. (totalt 40 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 16 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- eval can be harmful. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)
- `content-type=".*javascript.*"` in: #95: cast-sender.js, antal grupperade fel: 18 ( 1.40 betyg )
- `content-type=".*javascript.*"` in: #95: cast-sender.js, antal fel: 27106 ( 1.00 betyg )
- Expected an assignment or function call and instead saw an expression. (totalt 18367 st)
- Expected X and instead saw X. (totalt 8301 st)
- Do not access Object.prototype method X from target object. (totalt 208 st)
- X is assigned to itself. (totalt 87 st)
- Unnecessary X. (totalt 43 st)
- Unnecessary escape character: \?. (totalt 21 st)
- Comparing to itself is potentially pointless. (totalt 17 st)
- Unnecessary escape character: \/. (totalt 12 st)
- Unnecessary escape character: \.. (totalt 12 st)
- Unnecessary escape character: \-. (totalt 11 st)
- Unnecessary escape character: \). (totalt 8 st)
- Script URL is a form of eval. (totalt 5 st)
- X is not modified in this loop. (totalt 4 st)
- Unnecessary escape character: \(. (totalt 3 st)
- Unnecessary escape character: \[. (totalt 2 st)
- Unnecessary escape character: \^. (totalt 2 st)
- eval can be harmful. (totalt 2 st)
- Unnecessary escape character: \}. (totalt 1 st)