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Editorial Team
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Asked: 2026-05-26T06:19:37+00:00

Guys i have a html string like below; <html> <head><title></title></head> <body>i wanna remove <span

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Guys i have a html string like below;

<html>
   <head><title></title></head>
   <body>i wanna remove <span name="Note">this</span> tag</body>
</html>

i use this javascript code:

NSString *str = @"function f(){
   var nodes = document.getElementsByName('Note');
   alert(nodes.length); // it returns node count correctly
   for(var i = nodes.length - 1;i >= 0;i--){
       var node = nodes[i];
       if (node){
         node.parentNode.removeChild(node);
       }
   }
}f();";

[UIWebView stringByEvaluatingJavaScriptFromString:str];

result is : 

<html>
   <head><title></title></head>
   <body>i wanna remove tag</body>
</html>

how can i remove only tag?

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1 Answer

  1. Editorial Team

    You could try:

    NSString *str = @"function f(){
   var doc = document;
   var nodes = doc.getElementsByClassName('Note');
   alert(nodes.length); // it returns node count correctly
   for(var i = nodes.length - 1;i >= 0;i--){
       var node = nodes[i];
       if (node){
         //node.parentNode.removeChild(node);
         node.parentNode.replaceChild(doc.createTextNode(node.innerHTML), node);
       }
   }
}f();";

    but this will cause weird results if you got nested tags like <span class="Note">foo<span>bar</span></span> if remove the class is enough guess you could do something like this:

    NSString *str = @"function f(){
   var doc = document;
   var nodes = doc.getElementsByClassName('Note');
   alert(nodes.length); // it returns node count correctly
   for(var i = nodes.length - 1;i >= 0;i--){
       var node = nodes[i];
       if (node){
         //node.parentNode.removeChild(node);
         node.className = '';
       }
   }
}f();";

    Edit:

    NSString *str = @"function f(){
   var doc = document;
   var aux = doc.createElement('span');
   //alert(nodes.length); // it returns node count correctly
   for(var nodes = doc.getElementsByClassName('Note'); nodes && (nodes.length > 0); doc.getElementsByClassName('Note')){
       var node = nodes[0];
       if (node){
         aux.innerHTML = node.innerHTML;
         for (var el = aux.firstChild, next = el.nextSibling; el; el = next, next = next ? next.nextSibling : null){
            var tmp = node.parentNode.insertBefore(el, node);
         }
         node.parentNode.removeChild(node);
       }
   }
}f();";
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