Could you help me out how to replace anything between "666666&r=" and "&u" in the img src below ?
img src="img.php?&w=300&b=a&n=666666&r=3m&u=domain.com" class="graph"
Existing attempt
$("#changeimg").change(function() {
$('.graph').each(function(index) {
//var sub = t.replace(/^.*666666&r=(.*)&u=*$/, '1y'); ??
$(this).attr("src", sub);
});
});
This will work nicely:
var newString = oldString.replace(/([&?]r=)[^&]*/, '$11y');
It will replace the r= parameter regardless of whether it is at the beginning of the querystring, or in the middle (like in the example you posted)
t.replace( /^(.*666666&r=)([^&]*)(&u=.*)/, "$11y$3" )
Example and proof at https://regex101.com/r/M8nDNA/1
var sub = $(this).attr('src').replace(/&r=.*&/, '&r=1y&');
Thank you all for the answers !!!
This is working now :
$("#changedate").change(function() {
var sel = $("#changedate").val();
$('img').each(function(index) {
$(this).attr("src", $(this).attr('src').replace(/([&?]r=)[^&]*/, '$1' + sel));
});
});