如何使用javascript在特定數組對象中添加單個屬性

-4

對於每個具有按鈕的技能數組對象。例如：如果我點擊skill_id En77如何爲該特定技能數組對象添加一個屬性（certification_category）。如何使用javascript在特定數組對象中添加單個屬性

{ 

"_id": "employee_skill_doc", 
"_rev": "532-927e8b9f17cfea9642a0380e0fa9a0e3", 
"skills": [ 
    { 
     "skill_name": "SDS/2", 
     "skill_id": "En77", 
     "skill_set_id": "c16", 
     "skill_set": "Structural Analysis", 
     "skill_sub_ID": "b07", 
     "skill_cat_ID": "a01" 
    }, 
    { 
     "skill_name": "Adobe Flash Catalyst", 
     "skill_id": "Te369", 
     "skill_set_id": "c90", 
     "skill_set": "Prototyping Tools", 
     "skill_sub_ID": "b26", 
     "skill_cat_ID": "a03" 

    } 

])

這裏提到的預期輸出

{ 

"_id": "employee_skill_doc", 
"_rev": "532-927e8b9f17cfea9642a0380e0fa9a0e3", 
"skills": [ 
    { 
     "skill_name": "SDS/2", 
     "skill_id": "En77", 
     "skill_set_id": "c16", 
     "skill_set": "Structural Analysis", 
     "skill_sub_ID": "b07", 
     "skill_cat_ID": "a01", 
     「certification_category」:」1」 
    }, 

    { 
     "skill_name": "Adobe Flash Catalyst", 
     "skill_id": "Te369", 
     "skill_set_id": "c90", 
     "skill_set": "Prototyping Tools", 
     "skill_sub_ID": "b26", 
     "skill_cat_ID": "a03" 

    }] 
}

來源

2014-09-04 Nithya

您可以使用obj.prop ='value'.... – 2014-09-04 10:39:15

爲什麼downvotes爲？ – 2014-09-04 10:46:31

這將做你想做的。不好的做法使用下劃線標記。不需要用引號括起對象鍵。

var length = objName.skills.length, 
    i; 

for (i = 0; i < length; i++) { 
    if (objName.skills[i].skill_id === 'En77') { 
     objName.skills[i].certification_category = '1'; 
     break; 
    } 
}

來源

2014-09-04 10:45:15 Cathal

下面的循環將找到與給定的skill_id技能，然後你可以添加任何你想要的。

for(i = 0; i<blah.skills.length; i++){ 

    var skill = blah.skills[i]; 

    if(skill.skill_id == "En77"){ 

     skill.certification_category = "1"; 
     /// add whatever you want 
     break; 
    } 

}

來源

2014-09-04 10:45:25

如何使用javascript在特定數組對象中添加單個屬性

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