动态修改css文件中,具体的class中的个别属性值。

function setStyleSheetObjCssClassProperty(pStyleSheetObj, pSelectorText, pProperty, pValue) {
  var pStyleSheet = pStyleSheetObj.sheet;
  setSpecificStyleSheetCssClassProperty(pStyleSheet, pSelectorText, pProperty, pValue);
}
//修改class的属性值
//javascript方式
function setSpecificStyleSheetCssClassProperty(pStyleSheet, pSelectorText, pProperty, pValue) {
  var rules = pStyleSheet.cssRules;
  var rule;
  var selectorText;
  for (i = 0; i < rules.length; i++) {
    rule = rules[i];
    selectorText = rule.selectorText;
    if (selectorText == null || selectorText == "") {
        continue;
    }
    else if (selectorText === pSelectorText) {
        rule.style.setProperty(pProperty, pValue);
        return;
    }
//else if (selectorText.indexOf(pSelectorText + ",") > 0) {
// rule.style.setProperty(pProperty, pValue);
//}
  }
}
//修改class的属性值
//javascript方式
function setCssClassProperty(pSelectorText, pProperty, pValue) {
  var pSheetObjs = document.styleSheets;
  for (j = 0; j < pSheetObjs.length; j++) {
      setSpecificStyleSheetCssClassProperty(pSheetObjs[j], pSelectorText, pProperty, pValue);
}



使用例子如下:

    var sheetObj=$("#linkSource")[0];
    setStyleSheetObjCssClassProperty(sheetObj,"pSelectorText","background","green");
    setCssClassProperty("pSelectorText","background","green");

 修改后的效果的生命期:从修改开始直到CSS文件重新加载, 所以,如果有其他的特殊的使用的情况,相应的重新执行一次就好了。
 
//删除stylesheet中的某一个rule
function deleteRule(sheet, ruleName) {
  for (i = 0; i < sheet.rules.length; i++) {
    var rule = sheet.rules[i];
    if (rule.selectorText.toLowerCase() == ruleName.toLowerCase()) {

      if (sheet.deleteRule) {
          sheet.deleteRule(i);
      }
      if (sheet.removeRule) {
          sheet.removeRule(i);
      }
    }
  }
}
//stylesheet中的添加一个rule
function addRule(sheet, ruleName) {
  if (sheet.addRule) {
    sheet.addRule(ruleName, null, 0);
  }
  if (sheet.insertRule) {
    sheet.insertRule(ruleName + ' { }', 0);
  }
}


 

 

posted @ 2015-11-13 14:09  Jearay  阅读(2735)  评论(0编辑  收藏  举报