是否有一个快速和简单的方法来编码JavaScript对象到字符串，我可以通过GET请求传递?
没有jQuery，没有其他框架-只有纯JavaScript:)
当前回答
另一种方法(没有递归对象):
getQueryString = function(obj)
{
result = "";
for(param in obj)
result += ( encodeURIComponent(param) + '=' + encodeURIComponent(obj[param]) + '&' );
if(result) //it's not empty string when at least one key/value pair was added. In such case we need to remove the last '&' char
result = result.substr(0, result.length - 1); //If length is zero or negative, substr returns an empty string [ref. http://msdn.microsoft.com/en-us/library/0esxc5wy(v=VS.85).aspx]
return result;
}
alert( getQueryString({foo: "hi there", bar: 123, quux: 2 }) );
其他回答
对用户187291接受的解决方案的一个小修改:
serialize = function(obj) {
var str = [];
for(var p in obj){
if (obj.hasOwnProperty(p)) {
str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
}
}
return str.join("&");
}
检查对象上的hasOwnProperty使JSLint和JSHint高兴，它防止意外序列化对象的方法或其他东西，如果对象不是一个简单的字典。有关JavaScript编程语言的代码约定的语句，请参阅上一段。
Ramda:
R.pipe(R.toPairs, R.map(R.join('=')), R.join('&'))({a: 'b', b: 'a'})
Use:
Object.keys(obj).reduce(function(a,k){a.push(k+'='+encodeURIComponent(obj[k]));return a},[]).join('&')
我喜欢这句话，但我敢打赌，如果它在语义上符合公认的答案，它将是一个更受欢迎的答案:
function serialize( obj ) {
let str = '?' + Object.keys(obj).reduce(function(a, k){
a.push(k + '=' + encodeURIComponent(obj[k]));
return a;
}, []).join('&');
return str;
}
看起来好一点
objectToQueryString(obj, prefix) {
return Object.keys(obj).map(objKey => {
if (obj.hasOwnProperty(objKey)) {
const key = prefix ? `${prefix}[${objKey}]` : objKey;
const value = obj[objKey];
return typeof value === "object" ?
this.objectToQueryString(value, key) :
`${encodeURIComponent(key)}=${encodeURIComponent(value)}`;
}
return null;
}).join("&");
}
另一种方法(没有递归对象):
getQueryString = function(obj)
{
result = "";
for(param in obj)
result += ( encodeURIComponent(param) + '=' + encodeURIComponent(obj[param]) + '&' );
if(result) //it's not empty string when at least one key/value pair was added. In such case we need to remove the last '&' char
result = result.substr(0, result.length - 1); //If length is zero or negative, substr returns an empty string [ref. http://msdn.microsoft.com/en-us/library/0esxc5wy(v=VS.85).aspx]
return result;
}
alert( getQueryString({foo: "hi there", bar: 123, quux: 2 }) );
