我有这个URL:

site.fwx?position=1&archiveid=5000&columns=5&rows=20&sorting=ModifiedTimeAsc

我需要的是能够改变'行' url参数值我指定的东西,让我们说10。如果“行”不存在,我需要将它添加到url的末尾,并添加我已经指定的值(10)。


当前回答

我写了一个小的帮助函数,它适用于任何选择。你所需要做的就是将类"redirectOnChange"添加到任何选择元素,这将导致页面重新加载一个新的/更改的querystring参数,等于选择的id和值,例如:

<select id="myValue" class="redirectOnChange"> 
    <option value="222">test222</option>
    <option value="333">test333</option>
</select>

上面的例子会加上“?”myValue=222"或"?myValue=333”(如果存在其他参数,则使用“&”),然后重新加载页面。

jQuery:

$(document).ready(function () {

    //Redirect on Change
    $(".redirectOnChange").change(function () {
        var href = window.location.href.substring(0, window.location.href.indexOf('?'));
        var qs = window.location.href.substring(window.location.href.indexOf('?') + 1, window.location.href.length);
        var newParam = $(this).attr("id") + '=' + $(this).val();

        if (qs.indexOf($(this).attr("id") + '=') == -1) {
            if (qs == '') {
                qs = '?'
            }
            else {
                qs = qs + '&'
            }
            qs = qs + newParam;

        }
        else {
            var start = qs.indexOf($(this).attr("id") + "=");
            var end = qs.indexOf("&", start);
            if (end == -1) {
                end = qs.length;
            }
            var curParam = qs.substring(start, end);
            qs = qs.replace(curParam, newParam);
        }
        window.location.replace(href + '?' + qs);
    });
});

其他回答

我认为你需要查询插件。

例如:

window.location.search = jQuery.query.set("rows", 10);

不管行当前的状态如何,这都可以工作。

我也在找同样的东西,发现:https://github.com/medialize/URI.js,这是相当不错:)

- - -更新

我找到了一个更好的包:https://www.npmjs.org/package/qs,它还处理get参数中的数组。

一种现代的方法是使用基于URLSearchParams的本地标准。所有主流浏览器都支持它,除了IE,因为IE提供了腻子

const paramsString = "site.fwx?position=1&archiveid=5000&columns=5&rows=20&sorting=ModifiedTimeAsc"
const searchParams = new URLSearchParams(paramsString);
searchParams.set('rows', 10);
console.log(searchParams.toString()); // return modified string.

我只是写了一个简单的模块来处理读取和更新当前url查询参数。

使用示例:

import UrlParams from './UrlParams'

UrlParams.remove('foo') //removes all occurences of foo=?
UrlParams.set('foo', 'bar') //set all occurences of foo equal to bar
UrlParams.add('foo', 'bar2') //add bar2 to foo result: foo=bar&foo=bar2
UrlParams.get('foo') //returns bar
UrlParams.get('foo', true) //returns [bar, bar2]

下面是我的代码UrlParams.(js/ts):

class UrlParams {

    /**
     * Get params from current url
     * 
     * @returns URLSearchParams
     */
    static getParams(){
        let url = new URL(window.location.href)
        return new URLSearchParams(url.search.slice(1))
    }

    /**
     * Update current url with params
     * 
     * @param params URLSearchParams
     */
    static update(params){
        if(`${params}`){
            window.history.replaceState({}, '', `${location.pathname}?${params}`)
        } else {
            window.history.replaceState({}, '', `${location.pathname}`)
        }
    }

    /**
     * Remove key from url query
     * 
     * @param param string
     */
    static remove(param){
        let params = this.getParams()
        if(params.has(param)){
            params.delete(param)
            this.update(params)
        }
    }

    /**
     * Add key value pair to current url
     * 
     * @param key string
     * @param value string
     */
    static add(key, value){
        let params = this.getParams()
        params.append(key, value)
        this.update(params)
    }

    /**
     * Get value or values of key
     * 
     * @param param string
     * @param all string | string[]
     */
    static get(param, all=false){
        let params = this.getParams()
        if(all){
            return params.getAll(param)
        }
        return params.get(param)
    }

    /**
     * Set value of query param
     * 
     * @param key string
     * @param value string
     */
    static set(key, value){
        let params = this.getParams()
        params.set(key, value)
        this.update(params)
    }

}
export default UrlParams
export { UrlParams }
     // usage: clear ; cd src/js/node/js-unit-tests/01-set-url-param ; npm test ; cd -
     // prereqs: , nodejs , mocha
     // URI = scheme:[//authority]path[?paramName1=paramValue1&paramName2=paramValue2][#fragment]
     // call by: uri = uri.setUriParam("as","md")
     String.prototype.setUriParam = function (paramName, paramValue) {
        var uri = this
        var fragment = ( uri.indexOf('#') === -1 ) ? '' : uri.split('#')[1]
        uri = ( uri.indexOf('#') === -1 ) ? uri : uri.split('#')[0]
        if ( uri.indexOf("?") === -1 ) { uri = uri + '?&' }
        uri = uri.replace ( '?' + paramName , '?&' + paramName)
        var toRepl = (paramValue != null) ? ('$1' + paramValue) : ''
        var toSrch = new RegExp('([&]' + paramName + '=)(([^&#]*)?)')
        uri = uri.replace(toSrch,toRepl)
        if (uri.indexOf(paramName + '=') === -1 && toRepl != '' ) {
           var ampersandMayBe = uri.endsWith('&') ? '' : '&'
           uri = uri + ampersandMayBe + paramName + "=" + String(paramValue)
        }
        uri = ( fragment.length == 0 ) ? uri : (uri+"#"+fragment) //may-be re-add the fragment
        return uri
     }

     var assert = require('assert');
     describe('replacing url param value', function () {

        // scheme://authority/path[?p1=v1&p2=v2#fragment
        // a clean url
        it('http://org.com/path -> http://org.com/path?&prm=tgt_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ? with num value
        it('http://org.com/path?prm=src_v -> http://org.com/path?&prm=tgt_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?bid=57'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ? but string value
        it('http://org.com/path?prm=src_v -> http://org.com/path?&prm=tgt_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?bid=boo-bar'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=boo-bar-baz'
           var uriActual = uri.setUriParam("bid","boo-bar-baz")
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ?& but string value
        it('http://org.com/path?&prm=src_v -> http://org.com/path?&prm=tgt_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=5'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ? with other param
        it('http://org.com/path?prm=src_v&other_p=other_v -> http://org.com/path?&prm=tgt_v&other_p=other_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?bid=5&other_p=other_v'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10&other_p=other_v'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ?& with other param
        it('http://org.com/path?&prm=src_v&other_p=other_v -> http://org.com/path?&prm=tgt_v&other_p=other_v', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=5&other_p&other_v'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10&other_p&other_v'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ? with other param with fragment
        it('http://org.com/path?prm=src_v&other_p=other_v#f -> http://org.com/path?&prm=tgt_v&other_p=other_v#f', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?bid=5&other_p=other_v#f'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10&other_p=other_v#f'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // has the url param existing after the ?& with other param with fragment
        it('http://org.com/path?&prm=src_v&other_p=other_v#f -> http://org.com/path?&prm=tgt_v&other_p=other_v#f', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=5&other_p&other_v#f'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=10&other_p&other_v#f'
           var uriActual = uri.setUriParam("bid",10)
           assert.equal(uriActual, uriExpected);
        });

        // remove the param-name , param-value pair
        it('http://org.com/path?prm=src_v&other_p=other_v#f -> http://org.com/path?&prm=tgt_v&other_p=other_v#f', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?bid=5&other_p=other_v#f'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&other_p=other_v#f'
           var uriActual = uri.setUriParam("bid",null)
           assert.equal(uriActual, uriExpected);
        });

        // remove the param-name , param-value pair
        it('http://org.com/path?&prm=src_v&other_p=other_v#f -> http://org.com/path?&prm=tgt_v&other_p=other_v#f', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?&bid=5&other_p=other_v#f'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&other_p=other_v#f'
           var uriActual = uri.setUriParam("bid",null)
           assert.equal(uriActual, uriExpected);
        });

        // add a new param name , param value pair
        it('http://org.com/path?prm=src_v&other_p=other_v#f -> http://org.com/path?&prm=tgt_v&other_p=other_v#f', function (){
           var uri = 'http://site.eu:80/qto/view/devops_guide_doc?&other_p=other_v#f'
           var uriExpected = 'http://site.eu:80/qto/view/devops_guide_doc?&other_p=other_v&bid=foo-bar#f'
           var uriActual = uri.setUriParam("bid","foo-bar")
           assert.equal(uriActual, uriExpected);
        });

     });