JS实现搜索某字段并其后面插入某值

for (var i = 0, len = cols_fields.length; i < len; i++){
    //搜索寻找field为issuccess，并在后面插入值
    if(cols_fields[i]['field']==='issuccess'){
        cols_fields.splice(i+1,0,{field: 'chjfl', title: '成交分类', search: true,width:150});
        break;
    }
}