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January 27, 2017 04:20
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Get the line of source code that generated an element for jsfiddle/etc purposes
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| <!doctype html><script onload="document.scripts[0].remove()"> | |
| var html = | |
| `<html> | |
| <head> | |
| <title>Test page</title> | |
| <style> | |
| input:hover { | |
| outline: 3px solid red; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <input type=button onclick="dumpLines()" value="dump lines" /> | |
| </body> | |
| </html>`; | |
| var htmlLines = html.split("\n"); | |
| for(var lineIndex = 0; lineIndex < htmlLines.length; lineIndex++) { | |
| document.writeln(htmlLines[lineIndex]); | |
| for(var i = document.all.length; i--;) { | |
| if(document.all[i].sourceLine == undefined) { | |
| document.all[i].sourceLine = 1+lineIndex; | |
| } else { | |
| break; | |
| } | |
| } | |
| } | |
| function dumpLines() { | |
| var text = "Elements and their computed source line:\n"; | |
| for(var i = 0; i<document.all.length; i++) { | |
| text += ('- ' + document.all[i].tagName + ': ' + document.all[i].sourceLine) + "\n"; | |
| } | |
| alert(text); | |
| } | |
| </script> |
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Lines are 0 indexed, I should have added a +1 but ok you guys got the idea :D