将对象属性和值转换为String

Question

如何将JavaScript对象属性和值转换为字符串？

示例：

{
  name: "mark",
  age: "20"
  status: "single"
}

预期产出：

  

name：mark AND age：20 AND status：single

Answer 1

有很多方法可以做到这一点，迭代对象属性的所有变化。 E.g：

function propsAsString(obj) {
  return Object.keys(obj).map(function(k) { return k + ":" + obj[k] }).join(" AND ")
}

console.log(propsAsString({ name: "mark", age: "20", status: "single" }))
console.log(propsAsString({ color: "red", shape: "square" }))
console.log(propsAsString({ name: "mary" }))
console.log(propsAsString({ })) // outputs empty string

进一步阅读：

• Object.keys()
• .map()
• .join()

Answer 2

这是一个有效的解决方案。希望它有所帮助！

var someObject = {
        name: "mark",
        age: "20",
        status: "single"
    }
    var result = "";
    var counter = 0;
    for(var i in someObject){
        if(counter > 0){
         result += " AND ";
        }
        ++counter;
        result += i + ": "+someObject[i] + " ";
    }
    console.log(result);