javascript 获取url参数, Get URL Parameters With JavaScript

 

有个url如下:

http://example.com/?product=shirt&color=blue&newuser&size=m

我们该如何获取from这个参数的值呢?

 

方法一:

function getAllUrlParams(url) {

  // get query string from url (optional) or window
  var queryString = url ? url.split('?')[1] : window.location.search.slice(1);

  // we'll store the parameters here
  var obj = {};

  // if query string exists
  if (queryString) {

    // stuff after # is not part of query string, so get rid of it
    queryString = queryString.split('#')[0];

    // split our query string into its component parts
    var arr = queryString.split('&');

    for (var i = 0; i < arr.length; i++) {
      // separate the keys and the values
      var a = arr[i].split('=');

      // set parameter name and value (use 'true' if empty)
      var paramName = a[0];
      var paramValue = typeof (a[1]) === 'undefined' ? true : a[1];

      // (optional) keep case consistent
      paramName = paramName.toLowerCase();
      if (typeof paramValue === 'string') paramValue = paramValue.toLowerCase();

      // if the paramName ends with square brackets, e.g. colors[] or colors[2]
      if (paramName.match(/\[(\d+)?\]$/)) {

        // create key if it doesn't exist
        var key = paramName.replace(/\[(\d+)?\]/, '');
        if (!obj[key]) obj[key] = [];

        // if it's an indexed array e.g. colors[2]
        if (paramName.match(/\[\d+\]$/)) {
          // get the index value and add the entry at the appropriate position
          var index = /\[(\d+)\]/.exec(paramName)[1];
          obj[key][index] = paramValue;
        } else {
          // otherwise add the value to the end of the array
          obj[key].push(paramValue);
        }
      } else {
        // we're dealing with a string
        if (!obj[paramName]) {
          // if it doesn't exist, create property
          obj[paramName] = paramValue;
        } else if (obj[paramName] && typeof obj[paramName] === 'string'){
          // if property does exist and it's a string, convert it to an array
          obj[paramName] = [obj[paramName]];
          obj[paramName].push(paramValue);
        } else {
          // otherwise add the property
          obj[paramName].push(paramValue);
        }
      }
    }
  }

  return obj;
}

 

用法:

getAllUrlParams().product; // 'shirt'
getAllUrlParams().color; // 'blue'
getAllUrlParams().newuser; // true
getAllUrlParams().nonexistent; // undefined
getAllUrlParams('http://test.com/?a=abc').a; // 'abc'

 

方法二:

javascript 获取url参数, Get URL Parameters With JavaScript
javascript 获取url参数, Get URL Parameters With JavaScript
function getUrlVars() {
    var vars = {};
    var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
        vars[key] = value;
    });
    return vars;
}

用法:

var number = getUrlVars()["x"];
var mytext = getUrlVars()["text"];

 

拓展:

function getUrlParam(parameter, defaultvalue){
    var urlparameter = defaultvalue;
    if(window.location.href.indexOf(parameter) > -1){
        urlparameter = getUrlVars()[parameter];
        }
    return urlparameter;
}

 

用法:

var mytext = getUrlParam('text','Empty');

 

其他参数获取介绍:

//设置或获取对象指定的文件名或路径。
alert(window.location.pathname);

//设置或获取整个 URL 为字符串。
alert(window.location.href);

//设置或获取与 URL 关联的端口号码。
alert(window.location.port);

//设置或获取 URL 的协议部分。
alert(window.location.protocol);

//设置或获取 href 属性中在井号“#”后面的分段。
alert(window.location.hash);

//设置或获取 location 或 URL 的 hostname 和 port 号码。
alert(window.location.host);

//设置或获取 href 属性中跟在问号后面的部分。
alert(window.location.search);

 

本文:javascript 获取url参数, Get URL Parameters With JavaScript

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