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[Java教程]封装getByClass


方法一:(普通版),获取单一的class:

function getByClass(oParent, sClass) {  var aResult = [];  var aEle = oParent.getElementsByTagName('*');  for (var i = 0; i < aEle.length; i++) {    // 当className相等时添加到数组中     // aEle[i].className.search(sClass)!=-1    // aEle[i].className.indexof(sClass)!=-1    if (aEle[i].className == sClass) {      aResult.push(aEle[i]);    }  }  return aResult;};

 

方法二(多个class获取—>正则表达式):

function getByClass(oParent,sClass) {  var aResult = [];  var aEle = oParent.getElementsByTagName('*');  var re = new RegExp('\\b' + sClass + '\\b', 'i')  for (var i = 0; i < aEle.length; i++) {    if (re.test(aEle[i].className)) {      aResult.push(aEle[i]);    }  }  return aResult;};

方法三(多个class获取—>数组):

function getByClass(oParent,sClass) {  var aResult = [];  var aEle = oParent.getElementsByTagName('*');  for (var i = 0; i < aEle.length; i++) {    var arr = aEle[i].className.split(/\s+/);    for (var j = 0; j < arr.length; j++) {      if (arr[j] == sClass) {        aResult.push(aEle[i])      }    }  }  return aResult;};