Select a node that has a specific attribute value in javascript

Question

In that XML :

<elements>
        <product id="1">
                <brand>xxxxxxx</brand>
                <dci>xxxxx</dci>
                <therapeutic_area>xxxxxx</therapeutic_area>
        </product>
        <product id="2">
                <brand>xxxxxx</brand>
                <dci>xxxx</dci>
                <therapeutic_area>xxxx</therapeutic_area>
        </product>
        <product id="3">
                <brand>xxx</brand>
                <dci>xxxx</dci>
                <therapeutic_area>xxxxx</therapeutic_area>
        </product>

I need to select the node which has a specific attribute value. For instance 2

I tried this but it does not work:

alert(xmlDoc.getElementsByTagName("product")[0].getAttributeNode("2"));

Thanks in advance for your help

did you miss </elements> by parsing there or is it missing from the xml file? — briosheje
– briosheje, Commented Jun 10, 2015 at 13:15

Anik Islam Abhi · Accepted Answer · 2015-06-10 13:23:13Z

1

Try like this

var list=xmlDoc.getElementsByTagName("product");
for (i=0;i<list.length;i++)
{
     if(list[i].getAttribute("id")==2){
        // Found your node
     }
}

answered Jun 10, 2015 at 13:23

Anik Islam Abhi

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briosheje · Accepted Answer · 2015-06-10 13:26:22Z

var xmlfile = "<elements><product id=\"1\"><brand>xxxxxxx</brand><dci>xxxxx</dci><therapeutic_area>xxxxxx</therapeutic_area></product><product id=\"2\"><brand>xxxxxx</brand><dci>xxxx</dci><therapeutic_area>xxxx</therapeutic_area></product><product id=\"3\"><brand>xxx</brand><dci>xxxx</dci><therapeutic_area>xxxxx</therapeutic_area></product></elements>";

var parser = new DOMParser();

xmlDocument = parser.parseFromString(xmlfile,"text/xml");

var products = xmlDocument.getElementsByTagName("product");

for (var i = 0; i < products.length; ++i) {
    if (products[i].getAttribute("id") == 2) {
       // product id is 2.   
    }
}

http://jsfiddle.net/dvgLhw66/ <-- working fiddle.

You are using the wrong prototype. getAttributeNode does not exist, you're looking for getAttribute.

ozil · Accepted Answer · 2015-06-10 13:27:50Z

1

var node = xmlDoc.getElementsByTagName("product");
for (var index in node) {
    if (node[index].getAttribute("id") == "2") {
        alert();
    }
}

answered Jun 10, 2015 at 13:27

ozil

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Comments

Guilherme · Accepted Answer · 2015-06-10 13:29:04Z

0

I really don't understand what your trying to do here, but try something like this.

alert(document.querySelector("[id='2']").querySelector('brand'));

see querySelector.

answered Jun 10, 2015 at 13:29

Guilherme

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