Capítulo 7

String charAt()

JavaScript

<script type="text/javascript">
	function scharAt() {
		var texto = 'mau%\SR=+t$@ 098mu hjor \\\a';
		var indice = Number(document.form.indice.value);
		if (isFinite(indice) && indice == 0 || indice <= texto.length-1) {
		document.form.resultado.value = texto.charAt(indice);
		}else{
		alert('Entre um índice válido');
		};
	};
<script>

HTML

<p>string:<br /><b> mau%\sr=+t$@ 098mu hjor \\\a</b></p>
<form name="form" action="" method="get">
<label>Índice: <input type="text" name="indice" size="2" maxlength="2"  value="0" /></label> 
<button type="button" onclick="scharAt()">string.charAt()</button> = 
<input type="text" name="resultado" size="1"  maxlength="2" class="dest" />
</form>

string:
mau%\SR=+t$@ 098mu hjor \\\a

=