如何检查HTML中是否存在这样的元素（锚元素是否存在）？

Question

I have a URL plus a anchor in the end of that, something like this:

www.example.com/classname/methodname/arg#idname

Now I want to know, is there any element in the HTML which has id="idname" ? How can I do that?

Answer 1

You can also parse with vanilla JS

var raw = www.example.com/classname/methodname/arg#idname;
var exists = false;
try {
    var arrRaw = raw.split('#');
    if (arrRaw[1]) {
       if ( arrRaw[1] === 'idname') { exists = true}
    } else {
      exists = false;
    }       
} catch (error) {
    exists = false;        
}

Answer 2

if ($('#idname').length){
   //it exists
} else
{
   //it doesn't
}