Css Classes

• addClass(): adds the class passed as an argument
• removeClass(): removes the class or list of classes passed in. If it is called without an argument, all classes are removed;
• hasClass(): check if an element has a class (returns true or false)
• toggleClass(): Adds a class if it is not there, remove it if it is.

Ex.:
Write two functions:

1. toggleClass which takes a jQuery object and the name of the class and calls toggleClass on the object
2. setExclusiveClass which also takes a jQuery object and a class, and makes it such that the elements in the object passed have only the class given.

1.
function toggleClass($that,className) {

$that.toggleClass(className);

}

2.
function setExclusiveClass($that,className) {

$that.removeClass();

return $that.addClass(className);

}

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Each()

Метод .each() производит обход всех элементов, содержащихся в наборе jQuery и вызывает функцию обратного вызова callback для каждого из них. Не путать с функцией jQuery.each().

$collection.each(f);. $collection is an array, and f is a function that does something on each element in the array.

1. Примечание:

Цикл можно остановить в любой момент, вернув из функции обратного вызова false.

$('li').each(function(i,elem) {

if ($(this).is(".stop")) {

alert("Остановлено на " + i + "-м пункте списка.");

return false;

} else {

alert(i + ': ' + $(elem).text());

});

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