我有以下网址:
http://www.mysite.co.uk/?location=mylocation1
我需要的是从URL中获取location
的值到变量中,然后在jQuery代码中使用它:
var thequerystring = "getthequerystringhere"
$('html,body').animate({scrollTop: $("div#" + thequerystring).offset().top}, 500);
有没有人知道如何使用JavaScript或jQuery获取该值?
答案 0 :(得分:466)
来自:http://jquery-howto.blogspot.com/2009/09/get-url-parameters-values-with-jquery.html
这就是你所需要的:)
以下代码将返回包含URL参数的JavaScript对象:
// Read a page's GET URL variables and return them as an associative array.
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
例如,如果您有URL:
http://www.example.com/?me=myValue&name2=SomeOtherValue
此代码将返回:
{
"me" : "myValue",
"name2" : "SomeOtherValue"
}
你可以这样做:
var me = getUrlVars()["me"];
var name2 = getUrlVars()["name2"];
答案 1 :(得分:156)
要从当前网址检索整个查询字符串,从?
字符开始,您可以使用
location.search
https://developer.mozilla.org/en-US/docs/DOM/window.location
示例:
// URL = https://example.com?a=a%20a&b=b123
console.log(location.search); // Prints "?a=a%20a&b=b123"
关于检索特定的查询字符串参数,尽管存在URLSearchParams
和URL
等类,但目前Internet Explorer不支持它们,应该避免使用它们。相反,你可以尝试这样的事情:
/**
* Accepts either a URL or querystring and returns an object associating
* each querystring parameter to its value.
*
* Returns an empty object if no querystring parameters found.
*/
function getUrlParams(urlOrQueryString) {
if ((i = urlOrQueryString.indexOf('?')) >= 0) {
const queryString = urlOrQueryString.substring(i+1);
if (queryString) {
return _mapUrlParams(queryString);
}
}
return {};
}
/**
* Helper function for `getUrlParams()`
* Builds the querystring parameter to value object map.
*
* @param queryString {string} - The full querystring, without the leading '?'.
*/
function _mapUrlParams(queryString) {
return queryString
.split('&')
.map(function(keyValueString) { return keyValueString.split('=') })
.reduce(function(urlParams, [key, value]) {
if (Number.isInteger(parseInt(value)) && parseInt(value) == value) {
urlParams[key] = parseInt(value);
} else {
urlParams[key] = decodeURI(value);
}
return urlParams;
}, {});
}
您可以使用以上内容:
// Using location.search
let urlParams = getUrlParams(location.search); // Assume location.search = "?a=1&b=2b2"
console.log(urlParams); // Prints { "a": 1, "b": "2b2" }
// Using a URL string
const url = 'https://example.com?a=A%20A&b=1';
urlParams = getUrlParams(url);
console.log(urlParams); // Prints { "a": "A A", "b": 1 }
// To check if a parameter exists, simply do:
if (urlParams.hasOwnProperty('parameterName') {
console.log(urlParams.parameterName);
}
答案 2 :(得分:26)
使用jQuery和JS直接执行此操作的简单方法,只需在Chrome或Firefox中查看控制台即可查看输出...
var queries = {};
$.each(document.location.search.substr(1).split('&'),function(c,q){
var i = q.split('=');
queries[i[0].toString()] = i[1].toString();
});
console.log(queries);
答案 3 :(得分:17)
看看这个stackoverflow answer。
function getParameterByName(name, url) {
if (!url) url = window.location.href;
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
results = regex.exec(url);
if (!results) return null;
if (!results[2]) return '';
return decodeURIComponent(results[2].replace(/\+/g, " "));
}
您可以使用该方法设置动画:
即:
var thequerystring = getParameterByName("location");
$('html,body').animate({scrollTop: $("div#" + thequerystring).offset().top}, 500);
答案 4 :(得分:1)
我们这样做......
String.prototype.getValueByKey = function (k) {
var p = new RegExp('\\b' + k + '\\b', 'gi');
return this.search(p) != -1 ? decodeURIComponent(this.substr(this.search(p) + k.length + 1).substr(0, this.substr(this.search(p) + k.length + 1).search(/(&|;|$)/))) : "";
};