浅谈JS中的常用选择器及属性、方法的调用
网络 2017-08-23 1366
下面为大家带来一篇浅谈JS中的常用选择器及属性、方法的调用。
选择器、属性及方法调用的配合使用：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | <style> #a{ width: 200px; height: 100px; background-color: red; } .b{ width: 200px; height: 100px; background-color: green; } .div1{ width: 200px; height: 100px; background-color:aqua; } </style> <body> <div id="a"></div> <div class="b" style="background-color: black;"></div> <div class="b" style="background-color: chartreuse;"></div> <div class="div1">精英教育</div> <input type="text" name="ipt1" /> <input type="checkbox" name="ckb2" / disabled="disabled"> </body> <script> //先选择元素在进行加效果 //ID选择器(使用较高JS) var a = document.getElementById("a"); //检测类型 alert(typeof(document.getElementById("a"))) a.style.backgroundColor="royalblue"; a.innerHTML ="<span>hello<span>"; a.innerText = "<span>hello<span>"; // class选择器 var b_class = document.getElementsByClassName("b"); b_class[0].style.backgroundColor="red"; var b_class = document.getElementsByClassName("b"); b_class[1].style.backgroundColor="blueviolet"; // 标签选择器 var b_b = document.getElementsByTagName("div"); b_b[1].style.backgroundColor="yellow"; var div_1 = document.getElementsByName("ipt1"); div_1[0].value="文本框"; var ckb2 = document.getElementsByName("ckb2")[0]; ckb2.setAttribute("checked",""); //移除属性 ckb2.removeAttribute("disabled") //创造元素 var a = document.createElement("a"); a.setAttribute("href","http://www.baidu.com"); a.innerText="百度一下"; document.body.appendChild(a); document.body.removeChild(a); div1.appendChild(a); </script> <body> <!--DOM Document Object Model BOM Bowers O M--> <div id="div1" class="div1"></div> <div class="div1"></div> <input type="text" name="ipt1" /> <input type="checkbox" name="ckb1" disabled="disabled"/> </body> </html> <script> // alert('1111'); // window.alert('123') var div1 = document.getElementById('div1'); div1.style.backgroundColor = 'red'; // div1.innerHTML = "<ul><li>123456</li></ul>"; div1.innerText = "<ul><li>123456</li></ul>"; var div1_class = document.getElementsByClassName('div1'); div1_class[1].style.backgroundColor = "green"; var div1_1 = document.getElementsByTagName('div'); div1_1[1].style.backgroundColor = "blue"; // jQuery var div1_2 = document.getElementsByName('ipt1'); div1_2[0].value = '123'; var ckb1 = document.getElementsByName('ckb1')[0]; // ckb1.setAttribute("checked","checked"); ckb1.removeAttribute('disabled'); var a = document.createElement("a"); a.setAttribute("href","http://www.baidu.com"); a.innerText = "百度"; document.body.appendChild(a); document.body.removeChild(a); div1.appendChild(a); </script> |
