Created
May 2, 2018 20:39
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Example of ES6 Default Function Parameters
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| /* ES5 */ | |
| function dogExplainsCats (behaviour, reason) { | |
| if (reason === undefined) { | |
| reason = 'evil'; | |
| } | |
| return 'Why cats ' + behaviour + '? Because cats ' + reason + '.'; | |
| } | |
| dogExplainsCats('poke you in face when sleeping'); | |
| // > 'Why cats poke you in face when sleeping? Because cats evil.' | |
| /* >= ES6 */ | |
| function dogExplainsCats (behaviour, reason = 'evil') { | |
| return `Why cats #{behaviour}? Because cats #{reason}!`; | |
| } | |
| dogExplainsCats('poke you in face when sleeping'); | |
| // > 'Why cats poke you in face when sleeping? Because cats evil.' |
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