Created
April 5, 2017 05:15
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Create new scope in javascript
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| function func() { | |
| for (var i = 0; i < 10; i++) { | |
| setTimeout(function() { | |
| console.log('i:' + i); | |
| }, 0); | |
| } | |
| } | |
| // func(); | |
| function solution1() { | |
| for (let i = 0; i < 10; i++) { | |
| setTimeout(function() { | |
| console.log('i:' + i); | |
| }, 0); | |
| } | |
| } | |
| // solution1(); | |
| function solution2() { | |
| for (var i = 0; i < 10; i++) { | |
| var fn = function(index){ console.log('i:' + index);}; | |
| setTimeout(fn.bind(null, i), 0); | |
| } | |
| } | |
| // solution2(); | |
| function solution3() { | |
| for (var i = 0; i < 10; i++) { | |
| var fn = function(index){ console.log('i:' + index);}; | |
| (function(index) { | |
| setTimeout(() => {fn(index);}, 0); | |
| })(i); | |
| } | |
| } | |
| // solution3(); | |
| function solution4() { | |
| for (var i = 0; i < 10; i++) { | |
| try { | |
| throw i; | |
| } catch(index) { | |
| setTimeout(function() { | |
| console.log('i:' + index); | |
| }, 0); } | |
| } | |
| } | |
| // solution4(); | |
| function solution5() { | |
| for (var i = 0; i < 10; i++) { | |
| var fn = function(index){ console.log('i:' + index);}; | |
| setTimeout(fn, 0, i); | |
| } | |
| } | |
| // solution5(); | |
| var solution6fn = function (index){ console.log('i:' + index);}; | |
| function solution6() { | |
| for (var i = 0; i < 10; i++) { | |
| setTimeout("solution6fn(" + i + ")", 0); | |
| } | |
| } | |
| //solution6(); |
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