10 examples of 'how to get query string value in javascript' in JavaScript

230
function updateQueryString (key, value) {
231
  value = encodeURIComponent(value)
232
233
  var url = window.location.href.replace(/([?&])(?:q|h)=([^&]+)(&|$)/, function (all, pre, value, end) {
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    if (end === '&') {
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      return pre
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    }
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    return ''
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  })
239
  var re = new RegExp('([?&])' + key + '=.*?(&|#|$)(.*)', 'gi')
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  var hash
241
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  if (re.test(url)) {
243
    if (typeof value !== 'undefined' && value !== null) { return url.replace(re, '$1' + key + '=' + value + '$2$3') } else {
244
      hash = url.split('#')
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      url = hash[0].replace(re, '$1$3').replace(/(&|\?)$/, '')
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      if (typeof hash[1] !== 'undefined' && hash[1] !== null) { url += '#' + hash[1] }
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      return url
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    }
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  } else {
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    if (typeof value !== 'undefined' && value !== null) {
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      var separator = url.indexOf('?') !== -1 ? '&' : '?'
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      hash = url.split('#')
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      url = hash[0] + separator + key + '=' + value
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      if (typeof hash[1] !== 'undefined' && hash[1] !== null) { url += '#' + hash[1] }
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      return url
256
    } else { return url }
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  }
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}

82
function getQueryStringValue(key) {
83
  return decodeURIComponent(
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    window.location.search.replace(
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      new RegExp(
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        "^(?:.*[&\\?]" +
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          encodeURIComponent(key).replace(/[\.\+\*]/g, "\\$&") +
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          "(?:\\=([^&]*))?)?.*$",
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        "i"
90
      ),
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      "$1"
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    )
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  );
94
}

100
export function objectToQueryString(value: JSONObject): string {
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  const keys = Object.keys(value).filter(key => key.length > 0);
102
103
  if (!keys.length) {
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    return '';
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  }
106
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  return (
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    '?' +
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    keys
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      .map(key => {
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        const content = encodeURIComponent(String(value[key]));
112
113
        return key + (content ? '=' + content : '');
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      })
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      .join('&')
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  );
117
}

738
public getQueryText(): string {
739
    const filter = this.filters._query;
740
    return filter instanceof Filter
741
        ? filter.getValues()[0]
742
        : "";
743
}

58
export function getQueryValue(name, url) {
59
  if (!url) url = window.location.href;
60
  name = name.replace(/[\[\]]/g, "\\$&");
61
  const regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)");
62
  const results = regex.exec(url);
63
  if (!results) return null;
64
  if (!results[2]) return '';
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  return decodeURIComponent(results[2].replace(/\+/g, " "));
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}

334
function encodeQueryValue(key, value) {
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    return encodeURIComponent(key) +
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        "=" +
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        encodeURIComponent(typeof value === "object" ?
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            JSON.stringify(value) :
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            "" + value);
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}

2
function getQuery(querystring) {
3
	var query = {};
4
5
	var pairs = querystring.split('&'),
6
			length = pairs.length,
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			keyval = [],
8
			i = 0;
9
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	for (; i < length; i++) {
11
		keyval = pairs[i].split('=', 2);
12
		try {
13
			keyval[0] = decodeURIComponent(keyval[0]); // key
14
			keyval[1] = decodeURIComponent(keyval[1]); // value
15
		} catch (e) {}
16
17
		if (query[keyval[0]] === undefined) {
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			query[keyval[0]] = keyval[1];
19
		} else {
20
			query[keyval[0]] += ',' + keyval[1];
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		}
22
	}
23
24
	return query;
25
}

3
function GetUrlValue (VarSearch) {
4
  var SearchString = window.location.search.substring(1)
5
  var VariableArray = SearchString.split('&')
6
7
  for (var i = 0; i < VariableArray.length; i++) {
8
    var KeyValuePair = VariableArray[i].split('=')
9
10
    if (KeyValuePair[0] === VarSearch) {
11
      return KeyValuePair[1]
12
    }
13
  }
14
}

8
function createQueryString(query) {
9
  const segments = [];
10
11
  for (const key of Object.keys(query)) {
12
    segments.push(`${key}=${query[key]}`);
13
  }
14
15
  return segments.join('&');
16
}

22
export function _str__query(query = {}) {
23
	const a1__str__query = []
24
	for (let key in query) {
25
		const value = query[key]
26
		const value__ = value == null ? '' : value
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		a1__str__query.push(`${encodeURIComponent(key)}=${encodeURIComponent(value__)}`)
28
	}
29
	return a1__str__query.length ? `?${a1__str__query.join('&')}` : ''
30
}