2016-10-10 46 views
2

我正在尝试遍历一段XML来为Web应用程序提取一些逻辑规则。我设法让我的JavaScript可以在Firefox,Chrome,Opera和Safari上运行,但是我在MS浏览器中收到了控制台错误,指出'无法获取未定义的属性'length'或空引用''。Internet Explorer/MS Edge浏览器问题遍历xml数据

我无法通过反复试验获得解决方案,因为错误很早出现在代码中。

我的Javascript的示例;

function conditionTrigger(id, callType) { 
    var parser = new DOMParser(), 
    xmlLogic = parser.parseFromString(configXML, "text/xml"), 
    tags = xmlLogic.getElementsByTagName('*'), 
    conditionsPassed = 0, 
    callType; 
    if (id.length >= 3) { 
     id = id.slice(3); 
    } 
    console.log(tags[0]); 
    console.log(tags[0].children.length); 
    console.log('ID to be checked against = ' + id); 
    console.log(tags.length + ' nodes.'); 
    console.log(tags[0].children.length + ' level 1 node children.'); 
    for(var i01 = 0; i01 < tags[0].children.length; i01++){ 
     console.log(tags[0].children[i01]); 
     if (tags[0].children[i01].nodeName == "Rules"){ 
     console.log(tags[0].children[i01].children.length + ' child nodes of ' +tags[0].children[i01].nodeName + '.'); 
     for(var i02 = 0; i02 < tags[0].children[i01].children.length; i02++){ 
      console.log(tags[0].children[i01].children[i02]); 
     } 
     } 
    } 
} 

我的xml低于;

<?xml version="1.0" encoding="utf-8" ?> 
<output brand="[BRANDNAME]" title="[SCRIPTNAME]" version ="[SCRIPTVERSION]"> 
<Rules> 
<block id="1000000" triggerID="14"> 
    <ConditionsAndActions name="Test for something else" setIndex="2"> 
    <Conditions> 
    <Condition type="DataField" fieldID="6" value="xxx" /> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="DisplayAlert" message="can't move on, xxx found"/> 
    </Actions> 
    </ConditionsAndActions> 
    <ConditionsAndActions name="Check if forename is 'test' and call is a callback" setIndex="1"> 
    <Conditions> 
    <Condition type="DataField" fieldID="6" value="test" /> 
    <Condition type="Callback" /> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="27"/> 
    <Action actionIndex="0" type="DisplayAlert" message="Aha, this is a callback!"/> 
    </Actions> 
    </ConditionsAndActions> 
    <ConditionsAndActions name="Default" setIndex="0"> 
    <Conditions> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="17"/> 
    </Actions> 
    </ConditionsAndActions> 
</block> 
<block id="1000001" triggerID="19"> 
    <ConditionsAndActions name="Default" setIndex="0"> 
    <Conditions> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="18"/> 
    </Actions> 
    </ConditionsAndActions> 
</block> 
<block id="1000002" triggerID="20"> 
    <ConditionsAndActions name="Default" setIndex="0"> 
    <Conditions> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="10"/> 
    </Actions> 
    </ConditionsAndActions> 
</block> 
<block id="1000003" triggerID="22"> 
    <ConditionsAndActions name="Default" setIndex="0"> 
    <Conditions> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="10"/> 
    </Actions> 
    </ConditionsAndActions> 
</block> 
<block id="1000004" triggerID="23"> 
    <ConditionsAndActions name="Default" setIndex="0"> 
    <Conditions> 
    </Conditions> 
    <Actions> 
    <Action actionIndex="0" type="MoveToPanel" panelID="17"/> 
    </Actions> 
    </ConditionsAndActions> 
</block> 
</Rules> 
</output> 
+1

你能确定你的XML,你正在寻找的元素呢?从'getElementsByTagName('*')开始''看起来像是一种奇怪的访问数据的方式,因为它选择所有元素。如果你想使用'tags [0]'来访问根元素,我只需使用'xmlLogic.documentElement'。从那时起,我不确定你想访问哪些元素,但我确定'querySelector(All)'和'getElementsByTagName'允许你指定你想要的元素的类型。 –

+1

此外,Stackoverflow允许您以可执行的方式插入HTML和Javascript代码片段,可测试的方式,考虑在您的问题中插入片段,我们可以在IE或Edge中检查并测试以确定问题。 –

+0

这些元素会随着xml为Web应用程序携带配置而变化 - 基本上,在这种情况下,用户单击按钮将传入一个ID并且JS需要遍历xml以找出与该id相关的条件和操作,如果满足所有条件,则执行setIndex值最高的那个值,如果未满足条件集,则会触发defsult(setIndex = 0)并且其相关的actiobs将会触发 –

回答

0

我发现,通过改变。孩子到.childNodes和的getAttribute使用jquery.attr的问题就解决了