考虑:
http://example.com/page.html?returnurl=%2Fadmin
对于page.html内的js，它如何检索GET参数?
对于上面的简单例子，func('returnurl')应该是/admin。
但它也应该适用于复杂的查询字符串…
当前回答
这是另一个基于Kat和Bakudan例子的例子，但让它更通用一点。
function getParams ()
{
var result = {};
var tmp = [];
location.search
.substr (1)
.split ("&")
.forEach (function (item)
{
tmp = item.split ("=");
result [tmp[0]] = decodeURIComponent (tmp[1]);
});
return result;
}
location.getParams = getParams;
console.log (location.getParams());
console.log (location.getParams()["returnurl"]);
其他回答
一种更花哨的方法::)
var options = window.location.search.slice(1)
.split('&')
.reduce(function _reduce (/*Object*/ a, /*String*/ b) {
b = b.split('=');
a[b[0]] = decodeURIComponent(b[1]);
return a;
}, {});
在这里，我用这段代码将GET参数转换为一个对象，以便更容易地使用它们。
// Get Nav URL
function getNavUrl() {
// Get URL
return window.location.search.replace("?", "");
};
function getParameters(url) {
// Params obj
var params = {};
// To lowercase
url = url.toLowerCase();
// To array
url = url.split('&');
// Iterate over URL parameters array
var length = url.length;
for(var i=0; i<length; i++) {
// Create prop
var prop = url[i].slice(0, url[i].search('='));
// Create Val
var value = url[i].slice(url[i].search('=')).replace('=', '');
// Params New Attr
params[prop] = value;
}
return params;
};
// Call of getParameters
console.log(getParameters(getNavUrl()));
Window.location.search将返回?上。下面的代码将删除?，使用split将键/值数组分开，然后将命名属性分配给params对象:
function getSearchParameters() {
var prmstr = window.location.search.substr(1);
return prmstr != null && prmstr != "" ? transformToAssocArray(prmstr) : {};
}
function transformToAssocArray( prmstr ) {
var params = {};
var prmarr = prmstr.split("&");
for ( var i = 0; i < prmarr.length; i++) {
var tmparr = prmarr[i].split("=");
params[tmparr[0]] = tmparr[1];
}
return params;
}
var params = getSearchParameters();
然后，您可以通过调用params.test从http://myurl.com/?test=1获取测试参数。
这个解决方案处理URL解码:
var params = function() {
function urldecode(str) {
return decodeURIComponent((str+'').replace(/\+/g, '%20'));
}
function transformToAssocArray( prmstr ) {
var params = {};
var prmarr = prmstr.split("&");
for ( var i = 0; i < prmarr.length; i++) {
var tmparr = prmarr[i].split("=");
params[tmparr[0]] = urldecode(tmparr[1]);
}
return params;
}
var prmstr = window.location.search.substr(1);
return prmstr != null && prmstr != "" ? transformToAssocArray(prmstr) : {};
}();
用法:
console.log('someParam GET value is', params['someParam']);
我创建了一个简单的JavaScript函数来从URL访问GET参数。
只要包含这个JavaScript源代码，就可以访问get参数。 例如:在http://example.com/index.php?language=french中，语言变量可以通过$_GET["language"]访问。类似地，所有参数的列表将作为数组存储在变量$_GET_Params中。JavaScript和HTML都在下面的代码片段中提供:
<!DOCTYPE html> <html> <body> <!-- This script is required --> <script> function $_GET() { // Get the Full href of the page e.g. http://www.google.com/files/script.php?v=1.8.7&country=india var href = window.location.href; // Get the protocol e.g. http var protocol = window.location.protocol + "//"; // Get the host name e.g. www.google.com var hostname = window.location.hostname; // Get the pathname e.g. /files/script.php var pathname = window.location.pathname; // Remove protocol part var queries = href.replace(protocol, ''); // Remove host part queries = queries.replace(hostname, ''); // Remove pathname part queries = queries.replace(pathname, ''); // Presently, what is left in the variable queries is : ?v=1.8.7&country=india // Perform query functions if present if (queries != "" && queries != "?") { // Remove question mark '?' queries = queries.slice(1); // Split all the different queries queries = queries.split("&"); // Get the number of queries var length = queries.length; // Declare global variables to store keys and elements $_GET_Params = new Array(); $_GET = {}; // Perform functions per query for (var i = 0; i < length; i++) { // Get the present query var key = queries[i]; // Split the query and the value key = key.split("="); // Assign value to the $_GET variable $_GET[key[0]] = [key[1]]; // Assign value to the $_GET_Params variable $_GET_Params[i] = key[0]; } } } // Execute the function $_GET(); </script> <h1>GET Parameters</h1> <h2>Try to insert some get parameter and access it through JavaScript</h2> </body> </html>
