是否有一种通过jQuery（或不使用）检索查询字符串值的无插件方法？
如果是，怎么办？如果没有，是否有插件可以这样做？
当前回答
以下是我正在使用的：
/**
* Examples:
* getUrlParams()['myparam'] // url defaults to the current page
* getUrlParams(url)['myparam'] // url can be just a query string
*
* Results of calling `getUrlParams(url)['myparam']` with various urls:
* example.com (undefined)
* example.com? (undefined)
* example.com?myparam (empty string)
* example.com?myparam= (empty string)
* example.com?myparam=0 (the string '0')
* example.com?myparam=0&myparam=override (the string 'override')
*
* Origin: http://stackoverflow.com/a/23946023/2407309
*/
function getUrlParams (url) {
var urlParams = {} // return value
var queryString = getQueryString()
if (queryString) {
var keyValuePairs = queryString.split('&')
for (var i = 0; i < keyValuePairs.length; i++) {
var keyValuePair = keyValuePairs[i].split('=')
var paramName = keyValuePair[0]
var paramValue = keyValuePair[1] || ''
urlParams[paramName] = decodeURIComponent(paramValue.replace(/\+/g, ' '))
}
}
return urlParams // functions below
function getQueryString () {
var reducedUrl = url || window.location.search
reducedUrl = reducedUrl.split('#')[0] // Discard fragment identifier.
var queryString = reducedUrl.split('?')[1]
if (!queryString) {
if (reducedUrl.search('=') !== false) { // URL is a query string.
queryString = reducedUrl
}
}
return queryString
} // getQueryString
} // getUrlParams
在最后一种情况下，返回“override”而不是“0”使其与PHP一致。在IE7中工作。
其他回答
function GET() {
var data = [];
for(x = 0; x < arguments.length; ++x)
data.push(location.href.match(new RegExp("/\?".concat(arguments[x],"=","([^\n&]*)")))[1])
return data;
}
example:
data = GET("id","name","foo");
query string : ?id=3&name=jet&foo=b
returns:
data[0] // 3
data[1] // jet
data[2] // b
or
alert(GET("id")[0]) // return 3
我认为这是实现这一点的准确和简洁的方法（修改自http://css-tricks.com/snippets/javascript/get-url-variables/):
function getQueryVariable(variable) {
var query = window.location.search.substring(1), // Remove the ? from the query string.
vars = query.split("&"); // Split all values by ampersand.
for (var i = 0; i < vars.length; i++) { // Loop through them...
var pair = vars[i].split("="); // Split the name from the value.
if (pair[0] == variable) { // Once the requested value is found...
return ( pair[1] == undefined ) ? null : pair[1]; // Return null if there is no value (no equals sign), otherwise return the value.
}
}
return undefined; // Wasn't found.
}
关于这个问题的顶级答案的问题是，不支持在#后面放置参数，但有时也需要获得这个值。
我修改了答案，让它解析带有哈希符号的完整查询字符串：
var getQueryStringData = function(name) {
var result = null;
var regexS = "[\\?&#]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec('?' + window.location.href.split('?')[1]);
if (results != null) {
result = decodeURIComponent(results[1].replace(/\+/g, " "));
}
return result;
};
以下是我正在使用的：
/**
* Examples:
* getUrlParams()['myparam'] // url defaults to the current page
* getUrlParams(url)['myparam'] // url can be just a query string
*
* Results of calling `getUrlParams(url)['myparam']` with various urls:
* example.com (undefined)
* example.com? (undefined)
* example.com?myparam (empty string)
* example.com?myparam= (empty string)
* example.com?myparam=0 (the string '0')
* example.com?myparam=0&myparam=override (the string 'override')
*
* Origin: http://stackoverflow.com/a/23946023/2407309
*/
function getUrlParams (url) {
var urlParams = {} // return value
var queryString = getQueryString()
if (queryString) {
var keyValuePairs = queryString.split('&')
for (var i = 0; i < keyValuePairs.length; i++) {
var keyValuePair = keyValuePairs[i].split('=')
var paramName = keyValuePair[0]
var paramValue = keyValuePair[1] || ''
urlParams[paramName] = decodeURIComponent(paramValue.replace(/\+/g, ' '))
}
}
return urlParams // functions below
function getQueryString () {
var reducedUrl = url || window.location.search
reducedUrl = reducedUrl.split('#')[0] // Discard fragment identifier.
var queryString = reducedUrl.split('?')[1]
if (!queryString) {
if (reducedUrl.search('=') !== false) { // URL is a query string.
queryString = reducedUrl
}
}
return queryString
} // getQueryString
} // getUrlParams
在最后一种情况下，返回“override”而不是“0”使其与PHP一致。在IE7中工作。
Node.js的源代码中有一个健壮的实现https://github.com/joyent/node/blob/master/lib/querystring.js
TJ的qs也执行嵌套参数解析https://github.com/visionmedia/node-querystring
