LayoutTests/editing/inserting/insert-text-into-text-field.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <title>Inserting text</title>
 <style>
 input {
     padding: 15px;
     border-style: none;
     box-sizing: border-box;
     font-size: 14px;
     height: 1.8em;
     background-color: yellow;
 }
 </style>
 </head>
 <body>
 <p>This tests inserting text ("b") into a text field with specific CSS
 and an already existing text ("a").
 To manually test, copy and paste some text into the text field below.
 Pasting should work as expected.</p>
 <input type="text" id="input" value="a" />
 <div id="log"></div>

 <script>
 if (window.testRunner)
     testRunner.dumpAsText();

 var input = document.getElementById("input");
 input.setSelectionRange(1, 1);
 document.execCommand("InsertHTML", false, "b");
 if (input.value == "ab")
     log.innerText = "PASSED the final text is 'ab'.";
 else
     log.innerText = "FAILED the final text is not 'ab'.";
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Inserting text</title>
	<style>
	input {
	padding: 15px;
	border-style: none;
	box-sizing: border-box;
	font-size: 14px;
	height: 1.8em;
	background-color: yellow;
	}
	</style>
	</head>
	<body>
	<p>This tests inserting text ("b") into a text field with specific CSS
	and an already existing text ("a").
	To manually test, copy and paste some text into the text field below.
	Pasting should work as expected.</p>
	<input type="text" id="input" value="a" />
	<div id="log"></div>

	<script>
	if (window.testRunner)
	testRunner.dumpAsText();

	var input = document.getElementById("input");
	input.setSelectionRange(1, 1);
	document.execCommand("InsertHTML", false, "b");
	if (input.value == "ab")
	log.innerText = "PASSED the final text is 'ab'.";
	else
	log.innerText = "FAILED the final text is not 'ab'.";
	</script>
	</body>
	</html>