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AttributeValueTransforms = {
lowercase: function(value) { return value.toLowerCase(); },
uppercase: function(value) { return value.toUpperCase(); },
alternate_case: function(value) {
var transformedValue = "";
for (var i = 0; i < value.length; i++) {
transformedValue += i % 2 ?
value.charAt(i).toLowerCase() :
value.charAt(i).toUpperCase();
}
return transformedValue;
},
// TODO: Should we perform this transform too?
// add_leading_and_trimming_whitespace: function(value) {
// var space = "\0020\0009\000A\000D";
// return `${space}${space}${value}${space}${space}`;
// },
};
function TransformAttributeValues(transform, attributeNames) {
if (typeof attributeNames === "string")
attributeNames = [attributeNames];
attributeNames.forEach(name => {
Array.from(document.querySelectorAll(`[${name}]`)).forEach(element => {
var value = element.getAttribute(name);
var transformedValue = AttributeValueTransforms[transform](value);
element.setAttribute(name, transformedValue);
});
});
}