What is the method to extract a part of a URL hash using JavaScript?
Here is my current situation:
something.html?il=#/new/product/123I want to retrieve "123" as a variable...
Strictly using pure JavaScript without any libraries, do you have any suggestions?
Make sure to utilize the hash part of the URL, not the querystring. Anything following the # symbol is called the hash.
You can access the hash using document.location.hash and then parse that string accordingly.
var id = document.location.hash.split("/"); //convert the hash into an array by splitting at "/"
id = id.pop(); //retrieve the last item in the array
Although this method may seem simple and clear, it's risky to assume that the desired string will always be the final element in the array. To reduce chances of error, consider using a regular expression.
var hash = document.location.hash,
re = /\/new\/product\/(d+)/,
id = hash.match(re); //this matches both the entire string and the number for some reason
id = id.pop(); //to specifically retrieve the number again
If you're looking for a solution in Javascript, here's a handy snippet to assist you. Simply call the getQuerystringNameValue() function and set the return value to the desired textbox using $("#textboxID").val(returnValue);
alert("parameter1" + " = " + getQuerystringNameValue("parameter1"));
alert("parameter2" + " = " + getQuerystringNameValue("parameter2"));
alert("parameter3" + " = " + getQuerystringNameValue("parameter3"));
function getQuerystringNameValue(name)
{
// This function retrieves the value based on the parameter name provided.
// For instance, passing "parameter1" will return its corresponding value from the URL format: page.htm?param1=100¶m2=101¶m3=102
var winURL = window.location.href;
var queryStringArray = winURL.split("?");
var queryStringParamArray = queryStringArray[1].split("&");
var nameValue = null;
for ( var i=0; i<queryStringParamArray.length; i++ )
{
queryStringNameValueArray = queryStringParamArray[i].split("=");
if ( name == queryStringNameValueArray[0] )
{
nameValue = queryStringNameValueArray[1];
}
}
return nameValue;
}
When working with JavaScript, the property document.location.search holds all the query parameters for the current URL. To extract specific segments, you can leverage the power of Regular Expressions. However, in your scenario, the information is not stored in the query string but rather in the anchor section, accessible through document.location.hash.
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