/*$(document).ready(function(){
$("button").click(function(){
$("p").hide();
});
});*/
//注意:jquery中的方法一遍就是xxx();----xxx(function(){});
$(document).ready(function(){
$('button').click(function(){
//$('p').hide();
$('p').toggle();
});
});
<h2>This is a heading,when click button,the content toggle of hide with show.</h2>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<button type="button">Click me</button>