One: the basis of selection parameters mainly include: id, tag name, class, *, there is a plurality of selectors together as a test screening criteria
The main test content for the value of each button
html code:
. 1 < INPUT type = "Button" ID = "btn1" value = "selected as an element one of the" /> 2 < INPUT type = "Button" ID = "btn2" value = "select a style of mini element" /> 3 < INPUT type = "Button" ID = "btn3" value = "select all div element" /> . 4 < INPUT type = "Button" ID = "btn4" value = "select all elements" /> 5 <input type="button" id="btn5"value = "select id is two and the pattern is a mini element" /> . 6 < HR /> . 7 < div id = "One" > . 8 < div class = "mini" > . 9 111 10 </ div > . 11 </ div > 12 is 13 is < div ID = "TWO" > 14 < div class = "Mini" > 15 222 16 </ div > 17 <div class="mini"> 18 333 19 </div> 20 </div> 21 22 <div id="three"> 23 <div class="mini"> 24 444 25 </div> 26 <div class="mini"> 27 555 28 </div> 29 <div class="mini"> 30 666 31 </div> 32 </div> 33 34 <span id="four"> 35 36 </span>
CSS code:
1 div,span,p { 2 width:140px; 3 height:140px; 4 margin:5px; 5 background:#aaa; 6 border:#000 1px solid; 7 float:left; 8 font-size:17px; 9 font-family:Verdana; 10 } 11 div.mini { 12 width:55px; 13 height:55px; 14 background-color: #aaa; 15 font-size:12px; 16 } 17 div.hide { 18 display:none; 19 }
JS code:
1 // define a page load event 2 $ ( function () { 3 // a button click event 1 Set 4 $ ( "# btn1"). The Click ( function () { 5 // Note Method 6 $ ( "# One ") .css (" the backgroundColor "," Pink " ); . 7 }) . 8 $ (" # btn2. ") the Click ( function () { . 9 // Note method 10 . $ (" Mini. ") CSS (" the backgroundColor "," Pink " ); . 11 }) 12 is $ ( "# btn3") the Click (. function () { 13 is // Note Method 14 $ ( "div") CSS ( "the backgroundColor", "Pink." ); 15 }) 16 $ ( "# btn4"). the Click ( function () { . 17 // Note that the method, parameters noted, all refer to all the elements comprising the internal body 18 is $ ( "*") CSS ( "the backgroundColor", "Pink." ); . 19 }) 20 is $ ( "# btn5"). the Click ( function () { 21 is // Note parameters, when a plurality of filter conditions with time ','Dividing the selection criteria 22 $("#two,.mini").css("backgroundColor","pink"); 23 }) 24 })