Short and simple.
constbar={x:5,};const{x:foo}=bar;console.log(foo);// 5This can be useful when you need to destructure a value that has a similar or same name as an existing variable. E.g.,
constcars=[{car:true,van:false,make:'Honda',year:2001,color:'Red',},{car:true,van:false,make:'Nissan',year:2000,color:'Blue',}];cars.map(car=>{const{car:isCar}=car;console.log(isCar);});Top comments(2)
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This is very nice and works well. I just wonder where this alias stuff is officially documented, because I found anything (except some post on StackOverflow but without any official reference).
Raúl Sánchez•
- LocationDenver, CO
- EducationB.S. of Computer Science @ University of Denver
- WorkSoftware Engineer Lead
- Joined
You can find it on the officialMDN site. It's under a section called Assigning to new variable names
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