如何使用 JavaScript 从 URL 读取 GET 数据? [英] How to read GET data from a URL using JavaScript?
问题描述
我正在尝试将数据从一个页面传递到另一个页面.
I'm trying to pass data from one page to another.
www.mints.com?name=something
www.mints.com?name=something
如何使用 JavaScript 读取name
?
How to read name
using JavaScript?
推荐答案
请在使用前查看这个,更当前的解决方案像下面这样的自定义解析函数,或第三方库.
Please see this, more current solution before using a custom parsing function like below, or a 3rd party library.
下面的代码有效并且在<的情况下仍然有用code>URLSearchParams 不可用,但它是在 JavaScript 没有可用的原生解决方案的时候编写的.在现代浏览器或 Node.js 中,更喜欢使用内置功能.</p><小时>
The a code below works and is still useful in situations where URLSearchParams
is not available, but it was written in a time when there was no native solution available in JavaScript. In modern browsers or Node.js, prefer to use the built-in functionality.
function parseURLParams(url) {
var queryStart = url.indexOf("?") + 1,
queryEnd = url.indexOf("#") + 1 || url.length + 1,
query = url.slice(queryStart, queryEnd - 1),
pairs = query.replace(/+/g, " ").split("&"),
parms = {}, i, n, v, nv;
if (query === url || query === "") return;
for (i = 0; i < pairs.length; i++) {
nv = pairs[i].split("=", 2);
n = decodeURIComponent(nv[0]);
v = decodeURIComponent(nv[1]);
if (!parms.hasOwnProperty(n)) parms[n] = [];
parms[n].push(nv.length === 2 ? v : null);
}
return parms;
}
使用如下:
var urlString = "http://www.example.com/bar?a=a+a&b%20b=b&c=1&c=2&d#hash";
urlParams = parseURLParams(urlString);
它返回一个像这样的对象:
which returns a an object like this:
{
"a" : ["a a"], /* param values are always returned as arrays */
"b b": ["b"], /* param names can have special chars as well */
"c" : ["1", "2"] /* an URL param can occur multiple times! */
"d" : [null] /* parameters without values are set to null */
}
所以
parseURLParams("www.mints.com?name=something")
给予
{name: ["something"]}
<小时>
编辑:此答案的原始版本使用了基于正则表达式的 URL 方法-解析.它使用了一个较短的函数,但该方法存在缺陷,我将其替换为合适的解析器.
EDIT: The original version of this answer used a regex-based approach to URL-parsing. It used a shorter function, but the approach was flawed and I replaced it with a proper parser.
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