将一些PHP代码转换为javascript（foreach等效）

Question

  

可能重复：
  For each in a array. How to do that in javascript?

嘿，我需要一些帮助，找到从PHP到javascript的每个等价物的好处。我尝试过使用jQuery.each（），但我不确定我是否正确使用了它。

以下是我需要转换的代码。我需要修复每个foreach到javascript。

if(calculate){
    // got complete, calculate possible solution
    // use decimals?  Does this work in the form?
foreach(values as valName1 => val1){
    foreach(operands as op1){
        foreach(values as valName2 => val2){
            if(valName2 == valName1)
                continue;
            foreach(operands as op2){
                foreach(values as valName3 => val3){
                    if(valName3 == valName1 ||
                       valName3 == valName2)
                        continue;
                    foreach(operands as op3){
                        foreach(values as valName4 => val4){
                            if(valName4 == valName1 ||
                               valName4 == valName2 ||
                               valName4 == valName3)
                                continue;
                            foreach(operands as op4){
                                foreach(values as valName5 => val5){
                                    if(valName5 == valName1 ||
                                       valName5 == valName2 ||
                                       valName5 == valName3 ||
                                       valName5 == valName4)
                                        continue;
                                    parentheses = -1;
                                    if(solve(val5, op4, val4, op3, val3, op2,
                                             val2, op1, val1, solution, parentheses)){
                                        count++;
                                            // Note that since solve() just returns the first result, we won't
                                            // display all possible parentheses ordering when there are multiple
                                            // solutions
                                        if(find_all){
                                            document.write(Solution(val5, op4, val4, op3, val3, op2,
                                                          val2, op1, val1, solution, parentheses, find_all);
                                        }
                                        else{
                                            document.write(Solution(val5, op4, val4, op3, val3, op2,
                                                          val2, op1, val1, solution, parentheses, find_all);
                                            break;
                                        }
                                    }
                                    parentheses = -1;
                                }
                                parentheses = -1;
                                if(!find_all && count) break;
                            }
                            if(!find_all && count) break;
                        }
                        if(!find_all && count) break;
                    }
                    if(!find_all && count) break;
                }
                if(!find_all && count) break;
            }
            if(!find_all && count) break;
        }
        if(!find_all && count) break;
    }
    if(!find_all && count) break;
}

if(!count || find_all){
    document.write( "Found " . count . " solutions.";
}

}

Answer 1

如果您正在寻找处理数据集的函数（例如foreach），underscore.js是一个不错的选择。