After successfully using a plugin from w3schools to filter elements in one project, I encountered an issue when attempting to implement it in another project. Here is the link to the problematic code pen:
https://codepen.io/zakero/pen/mZYBPz
If anyone can identify the problem in this code, please let me know.
Javascript:
filterSelection("all")
function filterSelection(c) {
var x, i;
x = document.getElementsByClassName("work-images");
if (c == "all") c = "";
for (i = 0; i < x.length; i++) {
w3RemoveClass(x[i], "show");
if (x[i].className.indexOf(c) > -1) w3AddClass(x[i], "show");
}
}
function w3AddClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
if (arr1.indexOf(arr2[i]) == -1) {element.className += " " + arr2[i];}
}
}
function w3RemoveClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
while (arr1.indexOf(arr2[i]) > -1) {
arr1.splice(arr1.indexOf(arr2[i]), 1);
}
}
element.className = arr1.join(" ");
}
// Add active class to the current button (highlight it)
// change is-checked class on buttons
$('.button-group').each( function( i, buttonGroup ) {
var $buttonGroup = $( buttonGroup );
$buttonGroup.on( 'click', 'button', function() {
$buttonGroup.find('.is-checked').removeClass('is-checked');
$( this ).addClass('is-checked');
});
});