请检查以下代码。我只需要检查在父标记内定义的子代。
如果该父母中出现任何意外的孩子,我需要将其报告为错误。
这是我的XML文件:
<places>
<Tirunelveli>XXXX</Tirunelveli>//allowed child of places
<Tiruchendur></Tiruchendur>//allowed child of places
<Alwar></Alwar>//allowed child of places
<sweet></sweet>//not allowed child of places and i have to report this tag as error
</places>
我需要检查<places>
父对象是否只有允许的子标记。否则,我需要将其添加为错误。
var rd = new FileReader();
rd.onload = function(e){
var xmlDoc = $.parseXML(this.result);
var $xml = $(xmlDoc);
//check allowed child of front tag
check_allowed_direct_child("places", "Tirunelveli,Tiruchendur,Alwar", "RULE_002", "Fail");
//Function to check the x tag have only the alowed child y
function check_allowed_direct_child(x,y,rule,error_type)
{
var child_array = y.split(',');
var child_count=child_array.length;
var ischild=""
var xmlchild="";
$xml.children(x).each(function()
{
ischild="no";
xmlchild=this.value;
for(i=0;i<count;i++)
{
if(child_array[i]==xmlchild)
{
ischild="yes";
}
}
if(ischild=="no")
{
//count the total error and warnings
check_total_error_warning(error_type);
$("#validation_report").append('<tr class="err"><td><a href="Asset\Rules\Rule.html\#'+rule+'">'+rule+'</td><td><span class="highlight"><'+xmlchild+'></span> is not allowed inside the <span class="highlight"><'+x+'></span> element</td><td class="'+classname+'">'+error_type+'</td></tr>');
}
});
}
};rd.readAsText(this.files[i]);
但是children()
代码无法正常工作。我在做什么错了?
答案 0 :(得分:1)
选择父节点的方式需要更正:使用find
进行定位,然后对该结果使用children
(不带参数)以获取所有子节点。
如果父节点是XML的根,那么find
将找不到它,但是使用addBack
,您也可以在匹配项中包含根节点。
我还将使用camelCase作为您的函数名称,并使用jQuery函数构建动态HTML。
这是看起来如何:
var $xml = $("<aa><bb></bb><cc></cc><dd></dd><ee></ee></aa>");
var className = "someClass"
//check allowed child of front tag
checkChildAllowed($xml, "aa", ["bb","cc","dd"], "RULE_002", "Fail");
//Function to check the x tag have only the allowed child y
function checkChildAllowed($xml, parent, allowedChildren, rule, errorType) {
// Make sure to first locate the parent correctly:
var $parent = $xml.find(parent).addBack(parent);
// Uppercase tag names as jQuery uses that HTML convention
allowedChildren = allowedChildren.map(childName => childName.toUpperCase());
$parent.children().each(function () {
if (allowedChildren.includes(this.nodeName)) return; // tag is OK
// Include this if that function is defined:
//check_total_error_warning(error_type);
$("#validation_report").append( // Use jQuery functions
$("<tr>").addClass("err").append(
$("<td>").append(
$("<a>").attr("href", "Asset\Rules\Rule.html\#"+rule).text(rule)
),
$("<td>").append(
$("<span>").addClass("highlight")
.text("<"+this.nodeName.toLowerCase()+">"),
" is not allowed inside the ",
$("<span>").addClass("highlight").text("<"+parent+">"),
" element"
),
$("<td>").addClass(className).text(errorType)
)
);
});
}
table { border-collapse: collapse }
td { border: 1px solid; padding: 5px }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="validation_report"></table>
答案 1 :(得分:0)
您可以做的是,在您选择的父元素中遍历子元素。在这种情况下,您的父元素是“ places” 。
您可以使用JavaScript函数.tagName
来获取子元素的元素类型。然后,您可以围绕该条件构造一个条件,以检查允许/不允许的孩子。
示例:
var rd = new FileReader();
var xmlDoc = $.parseXML(this.result);
var $xml = $(xmlDoc);
var classname='errorClass';
function check_allowed_direct_child(x="places",
y="Tirunelveli,Tiruchendur,Alwar",
rule="RULE_002",
error_type="Fail") {
var notAllowedChild='sweet';
var child_array=y.split(",");
for(i=0; child_array.length > i; i++) {
if(child_array[i] != notAllowedChild) {
alert(child_array[i]+' is an allowed child');
}
}
$(''+x).children().each(function () {
var elements=this.tagName.toLowerCase();
if(elements == notAllowedChild) {
alert(elements+' is not an allowed child');
$("#validation_report").append('<tr class="err"><td><a href="#">'+rule+'</td><td><span class="highlight"><'+elements+'></span> is not allowed inside the <span class="highlight"><'+x+'></span> element</td><td class="'+classname+'">'+error_type+'</td></tr>');
}
});
}
table, th, td {
border: 1px solid black;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<places>
<Tirunelveli>XXXX</Tirunelveli>
<Tiruchendur></Tiruchendur>
<Alwar></Alwar>
<sweet></sweet>
</places>
<table id="validation_report"></table>
<br />
<button onclick="check_allowed_direct_child();">Test</button>