首頁猿問 js數(shù)組中刪除重復(fù)對象...

js數(shù)組中刪除重復(fù)對象有什么快速的方法

JavaScript

慕工程0101907 2019-04-21 20:21:10

varterm_gpa=[{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'1'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2013-2014',term:'2'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'},{year:'2014-2015',term:'1'}]比如上面那個要變成varterm_gpa=[{year:'2013-2014',term:'1'},{year:'2013-2014',term:'2'},{year:'2014-2015',term:'1'}]

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狐的傳說

TA貢獻1804條經(jīng)驗獲得超3個贊

varunique={};term_gpa.forEach(function(gpa){unique[JSON.stringify(gpa)]=gpa});term_gpa=Object.keys(unique).map(function(u){returnJSON.parse(u)});

反對回復(fù) 2019-04-21

慕姐4208626

TA貢獻1852條經(jīng)驗獲得超7個贊

最快的方法是利用字典，遍歷一次你的數(shù)組，將year和term設(shè)為數(shù)組的鍵：varmyArr=[];for(variteminterm_gpa){myArr[':'+item.year+':'+item.term]=item;};OK,myArr就是你要的去重的數(shù)組了。

反對回復(fù) 2019-04-21