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January 26, 2016 09:19
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Var and let
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| <!-- find the bug --> | |
| <html> | |
| <head> | |
| <script> | |
| "use strict"; | |
| function iny() { | |
| let body=document.getElementById("bod"); | |
| let nums=[1,2,3]; | |
| for (let lnum of nums) { | |
| let but=mkButton("Let button"+lnum); | |
| but.onclick=function() { | |
| alert("Clicked "+lnum); | |
| } | |
| } | |
| for (var vnum of nums) { | |
| var but=mkButton("Var button "+vnum); | |
| but.onclick=function() { | |
| alert("Clicked "+vnum); | |
| } | |
| } | |
| function mkButton(name) { | |
| var but=document.createElement("input"); | |
| but.type="button"; | |
| but.value=name; | |
| body.appendChild(but); | |
| return but; | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body onload="iny();" id="bod"> | |
| </body> | |
| </html> |
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