<head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ varaLis = document.getElementsByTagName("li"); alert(aLis); alert(aLis.length); } </script> </head> <body> <ul> <li>111111</li> <li>222222</li> <li>333333</li> <li>444444</li> </ul> <ol> <li>555555</li> <li>666666</li> <li>777777</li> <li>888888</li> </ol> </body> <head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ var oUl = document.getElementById("a"); var aLis = oUl.getElementsByTagName("li"); //这里是重点,先找id,再找id下的标签 alert(aLis.length); } </script> </head> <body> <ul id="a"> <li>111111</li> <li>222222</li> <li>333333</li> <li>444444</li> </ul> <ol> <li>555555</li> <li>666666</li> <li>777777</li> <li>888888</li> </ol> </body> <head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ var oUl = document.getElementById("a"); var aLis = oUl.getElementsByTagName("li"); //alert(aLis.length); for(i=0;i<aLis.length;i++){ alert(aLis[i].innerHTML); } } </script> </head> <body> <ul id="a"> <li>111111</li> <li>222222</li> <li>333333</li> <li>444444</li> </ul> <ol> <li>555555</li> <li>666666</li> <li>777777</li> <li>888888</li> </ol> </body> <head> <metacharset="utf-8"> <title></title> <script> window.onload = function(){ varnodes = document.getElementsByName("hello"); alert(nodes.length); } </script> </head> <body> <div name="hello"></div> <span name="hello"></span> <input name="hello" /> <divid="div1"> <span name="hello"></span> </div> </body> <head> <metacharset="utf-8"> <title></title> <script> window.onload = function(){ //var nodes = document.getElementsByName("hello"); //alert(nodes.length); varoDiv = document.getElementById("div1"); varnodes = oDiv.getElementsByName("hello"); alert(nodes.length); } </script> </head> <body> <div name="hello"></div> <span name="hello"></span> <input name="hello" /> <divid="div1"> <span name="hello"></span> </div> </body>
<head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ var nodes = document.getElementsByClassName("box"); //alert(nodes); alert(nodes.length); } </script> </head> <body> <ul id="ul1"> <li>111111</li> <li class="box">222222</li> <li>333333</li> <li class="box">444444</li> </ul> <ol id="ol1"> <li class="box">555555</li> <li>666666</li> <li class="box">777777</li> <li>888888</li> </ol> </body> <head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ var nodes = document.getElementsByClassName("box"); //alert(nodes.length); for(i=0;i<nodes.length;i++){ alert(nodes[i].innerHTML); } } </script> </head> <body> <ul id="ul1"> <li>111111</li> <li class="box">222222</li> <li>333333</li> <li class="box">444444</li> </ul> <ol id="ol1"> <li class="box">555555</li> <li>666666</li> <li class="box">777777</li> <li>888888</li> </ol> </body> <head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ //var nodes = document.getElementsByClassName("box"); //// alert(nodes.length); //for(i=0;i<nodes.length;i++){ // alert(nodes[i].innerHTML); //} var oUl = document.getElementById("ul1"); var aLis = oUl.getElementsByClassName("box"); for(i=0;i<aLis.length;i++){ alert(aLis[i].innerHTML); } } </script> </head> <body> <ul id="ul1"> <li>111111</li> <li class="box">222222</li> <li>333333</li> <li class="box">444444</li> </ul> <ol id="ol1"> <li class="box">555555</li> <li>666666</li> <li class="box">777777</li> <li>888888</li> </ol> </body> <head> <meta charset="utf-8"> <title></title> <script> window.onload = function(){ var oUl = document.getElementById("ul1"); var nodes = elementByClassName(oUl,"box"); for(var i=0;i<nodes.length;i++){ alert(nodes[i].innerHTML); } } functionelementByClassName(parent,classStr){ var nodes = parent.getElementsByTagName("*"); var result = []; for(vari=0;i<nodes.length;i++){ if(nodes[i].className == classStr){ result.push(nodes[i]); } } return result; } </script> </head> <body> <ul id="ul1"> <li>111111</li> <li class="box">222222</li> <li>333333</li> <li class="box">444444</li> </ul> <ol id="ol1"> <li class="box">555555</li> <li>666666</li> <li class="box">777777</li> <li>888888</li> </ol> </body> |
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来自: AnXuelin295 > 《待分类》