disable/enable an elment using jQuery & JS
1. JS:
2. jQuery:
参考网址：
https://stackoverflow.com/questions/13831601/disabling-and-enabling-a-html-input-button
https://stackoverflow.com/questions/1414365/disable-enable-an-input-with-jquery
参考网址：
https://stackoverflow.com/questions/13831601/disabling-and-enabling-a-html-input-button
https://stackoverflow.com/questions/1414365/disable-enable-an-input-with-jquery