我有一个带有一些GET参数的URL,如下所示:

www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5 

我需要得到c的全部值。我试图读取URL,但只得到m2。如何使用JavaScript执行此操作?


当前回答

这个问题的答案太多了,所以我再加一个。

/**
 * parses and returns URI query parameters 
 * 
 * @param {string} param parm
 * @param {bool?} asArray if true, returns an array instead of a scalar 
 * @returns {Object|Array} 
 */
function getURIParameter(param, asArray) {
    return document.location.search.substring(1).split('&').reduce(function(p,c) {
        var parts = c.split('=', 2).map(function(param) { return decodeURIComponent(param); });
        if(parts.length == 0 || parts[0] != param) return (p instanceof Array) && !asArray ? null : p;
        return asArray ? p.concat(parts.concat(true)[1]) : parts.concat(true)[1];
    }, []);
}

用法:

getURIParameter("id")  // returns the last id or null if not present
getURIParameter("id", true) // returns an array of all ids

这将处理空参数(那些没有“=value”的键)、标量和基于数组的值检索API的公开以及正确的URI组件解码。

其他回答

我尽可能喜欢速记:

网址:example.com/mortgage_calc.htm?pmts=120&intr=6.8&prin=10000

香草Javascript:

for ( var vObj = {}, i=0, vArr = window.location.search.substring(1).split('&');
        i < vArr.length; v = vArr[i++].split('='), vObj[v[0]] = v[1] ){}
// vObj = {pmts: "120", intr: "6.8", prin: "10000"}

以下是用于将url查询参数解析为Object的angularJs源代码:

函数tryDecodeURIComponent(值){尝试{返回decodeURIComponent(value);}捕获(e){//忽略任何无效的uri组件}}函数isDefined(value){return typeof value!==“undefined”;}函数parseKeyValue(keyValue){keyValue=keyValue.replace(/^\?/,“”);var obj={},key_value,key;var iter=(keyValue||“”).split('&');对于(var i=0;i<iter.length;i++){var kV值=iter[i];if(kV值){key_value=kV值。替换(/\+/g,“%20”)。拆分(“=”);key=tryDecodeURIComponent(key_value[0]);if(isDefined(键)){var val=isDefined(key_value[1])?tryDecodeURIComponent(key_value[1]):true;if(!hasOwnProperty.call(obj,key)){obj[key]=val;}else-if(isArray(obj[key])){obj[key].push(val);}其他{obj[key]=[obj[key],val];}}}};返回obj;}警报(JSON.stringify(parseKeyValue('?a=1&b=3&c=m2-m3-m4-m5')));

您可以将此函数添加到window.location:

window.location.query = function query(arg){
  q = parseKeyValue(this.search);
  if (!isDefined(arg)) {
    return q;
  }      
  if (q.hasOwnProperty(arg)) {
    return q[arg];
  } else {
    return "";
  }
}

// assuming you have this url :
// http://www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5

console.log(window.location.query())

// Object {a: "1", b: "3", c: "m2-m3-m4-m5"}

console.log(window.location.query('c'))

// "m2-m3-m4-m5"

您可以添加一个输入框,然后要求用户将值复制到其中……这非常简单:

<h1>Hey User! Can you please copy the value out of the location bar where it says like, &m=2? Thanks! And then, if you could...paste it in the box below and click the Done button?</h1>
<input type='text' id='the-url-value' />
<input type='button' value='This is the Done button. Click here after you do all that other stuff I wrote.' />

<script>
//...read the value on click

好吧,但说真的。。。我发现了这段代码,它似乎很有用:

http://www.developerdrive.com/2013/08/turning-the-querystring-into-a-json-object-using-javascript/

function queryToJSON() {
    var pairs = location.search.slice(1).split('&');

    var result = {};
    pairs.forEach(function(pair) {
        pair = pair.split('=');
        result[pair[0]] = decodeURIComponent(pair[1] || '');
    });

    return JSON.parse(JSON.stringify(result));
}

var query = queryToJSON();

优雅、实用的解决方案

让我们创建一个包含URL参数名作为关键字的对象,然后我们可以通过其名称轻松提取参数:

// URL: https://example.com/?test=true&orderId=9381  

// Build an object containing key-value pairs
export const queryStringParams = window.location.search
  .split('?')[1]
  .split('&')
  .map(keyValue => keyValue.split('='))
  .reduce<QueryStringParams>((params, [key, value]) => {
    params[key] = value;
    return params;
  }, {});

type QueryStringParams = {
  [key: string]: string;
};


// Return URL parameter called "orderId"
return queryStringParams.orderId;
// 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;
}

// Usage for URL: http://my.site.com/location?locationId=53cc272c0364aefcb78756cd&shared=false
var id = getUrlVars()["locationId"];

从这里得到:http://jquery-howto.blogspot.ru/2009/09/get-url-parameters-values-with-jquery.html