原文:http://www.upwqy.com/details/251.html
var myObj = [{ "goods_id":1,'count':2},{ "goods_id":2,'count':4}]; var j1 = { "goods_id":3,'count':5} var isset = 0; for (x in myObj) { for (j in myObj[x]) { if( myObj[x][j] == 3){ myObj[x]['count'] = 5; isset = 1; break; } } } if(!isset){ myObj.push(j1) } console.log(myObj)
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