4.5.js 465 B

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  1. $(document).ready(function() {
  2. var $speech = $('div.speech');
  3. var defaultSize = $speech.css('fontSize');
  4. $('#switcher button').click(function() {
  5. var num = parseFloat($speech.css('fontSize'));
  6. switch (this.id) {
  7. case 'switcher-large':
  8. num *= 1.4;
  9. break;
  10. case 'switcher-small':
  11. num /= 1.4;
  12. break;
  13. default:
  14. num = parseFloat(defaultSize);
  15. }
  16. $speech.css('fontSize', num + 'px');
  17. });
  18. });