blocks|key|2593531|text|通过将代码替换为以下代码，得到了解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2593532|$.urlParam+=+function(name){
++++var+results+=+new+RegExp('[\?&]'+%2B+name+%2B+'=([%5E&#]*)').exec(window.location.href);
++++if+(results+==+null){
+++++++return+null;
++++}
++++else+{
+++++++return+decodeURI(results[1])+%7C%7C+0;
++++}
}|code-block|syntax|javascript|2593533|所以，例如"example.com?param1=name¶m2=&id=6“|2593534|$.urlParam('param1');++//+name
$.urlParam('id');++++++//+6
$.urlParam('param2');++//+null|2593535|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Got a solution by replacing the code with the following:

<pre><code>$.urlParam = function(name){
 var results = new RegExp('[\?&amp;]' + name + '=([^&amp;#]*)').exec(window.location.href);
 if (results == null){
 return null;
 }
 else {
 return decodeURI(results[1]) || 0;
 }
}
</code></pre>

So for example "example.com?param1=name&amp;param2=&amp;id=6"

<pre><code>$.urlParam('param1'); // name
$.urlParam('id'); // 6
$.urlParam('param2'); // null
</code></pre>

blocks|key|1299705|text|Odhikari的答案是(部分)填充：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1299706|(function+(w)+{

++++w.URLSearchParams+=+w.URLSearchParams+%7C%7C+function+(searchString)+{
++++++++var+self+=+this;
++++++++self.searchString+=+searchString;
++++++++self.get+=+function+(name)+{
++++++++++++var+results+=+new+RegExp('[\?&]'+%2B+name+%2B+'=([%5E&#]*)').exec(self.searchString);
++++++++++++if+(results+==+null)+{
++++++++++++++++return+null;
++++++++++++}
++++++++++++else+{
++++++++++++++++return+decodeURI(results[1])+%7C%7C+0;
++++++++++++}
++++++++};
++++}

})(window)|code-block|syntax|javascript|1299707|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Odhikari's answer as a (partial) polyfill:

<pre><code>(function (w) {

 w.URLSearchParams = w.URLSearchParams || function (searchString) {
 var self = this;
 self.searchString = searchString;
 self.get = function (name) {
 var results = new RegExp('[\?&amp;]' + name + '=([^&amp;#]*)').exec(self.searchString);
 if (results == null) {
 return null;
 }
 else {
 return decodeURI(results[1]) || 0;
 }
 };
 }

})(window)
</code></pre>

blocks|key|1299733|text|我在尝试使用URLSearchParams时遇到了类似的问题，在使用Internet时尝试制作AXIOS+Post。这和你的描述有点不同，但我想在这里发布我的决议，以防万一。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1299734|这里是我的AXIOS贴子代码，它适用于边缘、Chrome和火狐，但在IE上给出了错误|1299735|SCRIPT5009:+URLSearchParams未定义|blockquote|1299736|++++++++let+axiosConfig+=+{
++++++++++++headers:+{
++++++++++++++++'Content-Type':+'application/x-www-form-urlencoded'
++++++++++++}
++++++++};++++++++++++
++++++++//+Putting+together+the+data+to+be+passed+to+local+servlet.
++++++++const+params+=+new+URLSearchParams();
++++++++params.append('var1',+this.state.data1);
++++++++params.append('var2',+this.state.data2);

++++++++var+urlToPost+=+'https://localhost:8080/someLocalServlet/doSomething';

++++++++var+self+=+this;++
++++++++axios.post(urlToPost,+params,+axiosConfig)
++++++++++++.then((res)+=>+{
++++++++++++++++//+Handling+Response+from+Servlet.
++++++++++++++++console.log("AXIOS+POST+RESPONSE+RECEIVED:+",+res);

++++++++++++})
++++++++++++.catch((err)+=>+{
++++++++++++++++//+Handler+exception+error+thrown+by+Servlet.
++++++++++++++++console.log("AXIOS+POST+ERROR:+",+err);

++++++++++++})+++++|code-block|syntax|javascript|1299737|为了使它与IE一起工作，我使用了jQuery来完成Post，并使用var对象代替了下面的if语句检查用户是否在IE上：|1299738|++++if((navigator.userAgent.indexOf("MSIE")+!==+-1+)+%7C%7C+(!!document.documentMode+===+true+))+{+//IF+IE+>+10
++++++++var+myObject+=+{
++++++++++++var1:+this.state.data1,
++++++++++++var2:+this.state.data2
++++++++};
++++++++var+urlToPostTo+=+'https://localhost:8080/someLocalServlet/doSomething';

++++++++$.post(urlToPost,+myObject,+
++++++++++++function(result)+{++
++++++++++++++++alert(+"success"+);
++++++++++++})
++++++++++++++.done(function(result)+{
++++++++++++++++alert(+"second+success"+);
++++++++++++++})
++++++++++++++.fail(function(result)+{
++++++++++++++++alert(+"error"+);
++++++++++++++})
++++++++++++++.always(function(result)+{
++++++++++++++++++++alert(+"finished"+);
++++++++++++++});++++++++
++++}+else+{
+++++++//+use+the+AXIOS+POST+code+above
++++}|1299739|为了得到jQuery，我必须做|1299740|npm安装jquery|1299741|然后，在我的React文件之上导入了以下内容：|1299742|import+$+from+'jquery';+
import+{+polyfill+}+from+'es6-promise';+polyfill();|1299743|entityMap^0|6|F|1B|5|0|5|5|0|0|0|G|6|X|3|15|I|0|0|0|F|0|0|B|0|0|N|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1B|8|@]|D|@]|E|$]]|$1|K|3|L|5|M|7|1C|8|@]|D|@]|E|$N|O]]|$1|P|3|Q|5|6|7|1D|8|@$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]|$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|R|3|S|5|M|7|1K|8|@]|D|@]|E|$N|O]]|$1|T|3|U|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|V|3|W|5|J|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|X|3|Y|5|6|7|1R|8|@$9|1S|A|1T|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|M|7|1U|8|@]|D|@]|E|$N|O]]|$1|11|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]]|12|$]]

I have had a similar issue when trying to use URLSearchParams when trying to make an AXIOS Post when using Internet Explorer. So its a little different from your description, but I'd like to post my resolution here just in case.

Here's my AXIOS post code from my React app that works just fine for Edge, Chrome and Firefox, but on IE it gives me the error 

<blockquote>
 SCRIPT5009: URLSearchParams is undefined
</blockquote>

:

<pre><code> let axiosConfig = {
 headers: {
 'Content-Type': 'application/x-www-form-urlencoded'
 }
 }; 
 // Putting together the data to be passed to local servlet.
 const params = new URLSearchParams();
 params.append('var1', this.state.data1);
 params.append('var2', this.state.data2);

 var urlToPost = 'https://localhost:8080/someLocalServlet/doSomething';

 var self = this; 
 axios.post(urlToPost, params, axiosConfig)
 .then((res) =&gt; {
 // Handling Response from Servlet.
 console.log("AXIOS POST RESPONSE RECEIVED: ", res);

 })
 .catch((err) =&gt; {
 // Handler exception error thrown by Servlet.
 console.log("AXIOS POST ERROR: ", err);

 }) 
</code></pre>

To get it to work with IE I used jQuery to do the Post and used a var object instead of URLSearchParams.
The if statement below checks to see if the user is on IE :

<pre><code> if((navigator.userAgent.indexOf("MSIE") !== -1 ) || (!!document.documentMode === true )) { //IF IE &gt; 10
 var myObject = {
 var1: this.state.data1,
 var2: this.state.data2
 };
 var urlToPostTo = 'https://localhost:8080/someLocalServlet/doSomething';

 $.post(urlToPost, myObject, 
 function(result) { 
 alert( "success" );
 })
 .done(function(result) {
 alert( "second success" );
 })
 .fail(function(result) {
 alert( "error" );
 })
 .always(function(result) {
 alert( "finished" );
 }); 
 } else {
 // use the AXIOS POST code above
 }
</code></pre>

To get the jQuery, I did have to do 

<blockquote>
 npm install jquery
</blockquote>

Then on top of my React file I imported the following:

<pre><code>import $ from 'jquery'; 
import { polyfill } from 'es6-promise'; polyfill();
</code></pre>

blocks|key|2593586|text|如果有人在2019年发现这一点，corejs现在也支持URLSearchParams作为一个多填充，所以您可以只停留在corejs，而不必自己酿造东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2593587|import+'core-js/features/url-search-params';|code-block|syntax|javascript|2593588|https://github.com/zloirock/core-js#url-and-urlsearchparams|offset|length|2593589|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|1N|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|T|8|@]|9|@$I|U|J|V|1|W]]|A|$]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|H]]]]

If anyone finds this in 2019, corejs now also supports URLSearchParams as a polyfill, so you can just stay with corejs and don't have to brew together something yourselves. 

<pre><code>import 'core-js/features/url-search-params';
</code></pre>

<a href="https://github.com/zloirock/core-js#url-and-urlsearchparams" rel="noreferrer">https://github.com/zloirock/core-js#url-and-urlsearchparams</a>

blocks|key|2630792|text|class+UrlSearchParams+{
++constructor(query)+{
++++this.query+=+query;
++}
++getSearchObject+=+()+=>+{
++++const+{+query+}+=+this;
++++return+query
++++?+(/%5E[?#]/.test(query)+?+query.slice(1)+:+query)
++++++.split("&")
++++++.reduce((params,+param)+=>+{
++++++++let+[key,+value]+=+param.split("=");
++++++++params[key]+=+value
++++++++++?+decodeURIComponent(value.replace(/\%2B/g,+"+"))
++++++++++:+"";
++++++++return+params;
++++++},+{})
++:+{};
++};
++getAll+=+()+=>+{
++++const+searchParams+=+this.getSearchObject();
++++return+searchParams;
++}
++get+=+param+=>+{
++++const+searchParams+=+this.getSearchObject();
++++return+searchParams[param];
++};
++setUrl+=+(param,+value)+=>+{
++++const+searchParams+=+this.getSearchObject();
++++searchParams[param]+=+value;
++++return+Object.keys(searchParams)
++++.map(key+=>+key+%2B+"="+%2B+searchParams[key])
++++.join("&");
++};
}

export+default+UrlSearchParams;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2630793|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>class UrlSearchParams {
 constructor(query) {
 this.query = query;
 }
 getSearchObject = () =&gt; {
 const { query } = this;
 return query
 ? (/^[?#]/.test(query) ? query.slice(1) : query)
 .split("&amp;")
 .reduce((params, param) =&gt; {
 let [key, value] = param.split("=");
 params[key] = value
 ? decodeURIComponent(value.replace(/\+/g, " "))
 : "";
 return params;
 }, {})
 : {};
 };
 getAll = () =&gt; {
 const searchParams = this.getSearchObject();
 return searchParams;
 }
 get = param =&gt; {
 const searchParams = this.getSearchObject();
 return searchParams[param];
 };
 setUrl = (param, value) =&gt; {
 const searchParams = this.getSearchObject();
 searchParams[param] = value;
 return Object.keys(searchParams)
 .map(key =&gt; key + "=" + searchParams[key])
 .join("&amp;");
 };
}

export default UrlSearchParams;
</code></pre>

blocks|key|2630819|text|我能够通过使用url-搜索-params-多填充解决这个问题。只需导入正在使用URLSearchParams的文件中：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2630820|import+'url-search-params-polyfill';|code-block|syntax|javascript|2630821|现在，您对URLSearchParams的现有引用应该可以工作了！|2630822|entityMap|0|LINK|mutability|MUTABLE|url|https://www.npmjs.com/package/url-search-params-polyfill^0|7|H|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I was able to solve this by using <a href="https://www.npmjs.com/package/url-search-params-polyfill" rel="noreferrer">url-search-params-polyfill</a>. Just import into the file you're using URLSearchParams in:

<pre><code>import 'url-search-params-polyfill';
</code></pre>

And your existing references to URLSearchParams should now work!

I'm trying to execute the <a href="https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams" rel="noreferrer">URLSearchParams</a> but I get an error on IE 11 since it is not supported there. It's working perfectly in Chrome and Firefox.

How can I get the equivalent functionality in IE 11?
I am executing the code in Laravel 5.4.

Here is the line of code which I'm trying to execute.

<pre><code>var urlParams = new URLSearchParams(window.location.search);
</code></pre>

Error:

<blockquote>
 SCRIPT5009: 'URLSearchParams' is undefined
</blockquote>

SCRIPT5009: 'URLSearchParams' is undefined in IE 11

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试执行，但是在IE 11上我得到了一个错误，因为那里不支持它。它在Chrome和Firefox中运行得很好。如何在IE11中获得相应的功能？我正在执行Laravel5.4中的代码。这是我正在尝试执行的代码行。var urlParams = new URLSearchParams(window.location....

问SCRIPT5009：“URLSearchParams”在IE 11中未定义
EN

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问SCRIPT5009：“URLSearchParams”在IE 11中未定义EN