Remove selected html element from start tag to end tag with values using javascript
Question
I'm trying to parse HTML and want to remove all <select>...</select> from string which is from TextArea1 and want to show output (Plain Text) in TextArea2. Code is given below:
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
</head>
<body>
<textarea id="TextArea1" rows="10" cols="100"></textarea><br />
<textarea id="TextArea2" rows="10" cols="100"></textarea><br />
<input id="Submit1" onclick="parsehtml()" type="submit" value="submit" />
<script>
function parsehtml() {
let value = document.getElementById("TextArea1").value
.split('\n')
.filter(item => item.startsWith('<span>'))
.map(item => item.replace(/<\/?[^>]+>/ig, " ").trim()).join(' ')
document.getElementById("TextArea2").value = value
}
</script>
</body>
</html>
In my TextArea1 I have code like:
<span>Span 1</span>
<select>
<option>opt 01</option>
<option>opt 02</option>
</select>
<span>Span 2</span>
<select>
<option>opt 11</option>
<option>opt 12</option>
</select>
I'm getting output like
Span 1 Span 2
Code is working if I have all in a seperate line. But not working if I have all codes in a single line eg.
<select><option>opt 1</option></select><span>Span 1</span>...
I want to remove all <select> element with all of its values from start tag to end tag. and want to output from dynamic generated HTML code
Hello <select class="..." onchange="..."><option>opt 01</option><option>opt 02</option></select><span>World</span> Hello <select><option>opt 11</option><option>opt 12</option></select> <span>Again</span>
//need output like below
//Hello World Hello Again
1 answers
solution1
0 ACCPTED 2020-11-16 10:04:14
You can create a div , put TextArea1 's content into that div as HTML, use Javascript's DOM support to remove select s and copy the innerHTML into TextArea2 .
function replaceSelect() { var div = document.createElement("div"); //created a div div.innerHTML = document.getElementById("TextArea1").value; //copied the source text as HTML into the div for (let select of div.querySelectorAll("select")) select.remove(); //Lopped select tags inside the div and removed them document.getElementById("TextArea2").innerText = div.innerHTML; //Copied the result into the target } <textarea id="TextArea1"><select><option>opt 1</option></select><span>Span 1</span>...<select><option>opt 1</option></select><span>Span 2</span></textarea> <textarea id="TextArea2"></textarea> <input type="button" value="Remove Select" onclick="replaceSelect()">
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