Javascript form validiator without submit

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Hello,

I'm using the "gen_validatorv4" form validiation method to validiate form values. However, I'm making a tiny calculator in Javascript, in which I don't submit form, I press on a button and the calculated values appear in a box whtout the form being submitted.

The problem is, that this form validiator apparently only comes into action when the onsubmit event is trigerred. Is there a way to get the form validiated without trigerring onsubmit?

Please help!

Thanks :)

Posted 2-May-13 2:53am

FahdSanaullah

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adriancs 2-May-13 8:57am

For example? what do you want to validate?

Prasad Khandekar 2-May-13 9:10am

Have a look at (http://www.asynccontrols.com/)

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adriancs · Answer 1 · 2013-05-02T03:15:00

HTML

<head>
    <script type="text/javascript">
        function validateData() {
            try {
                var data1 = document.getElementById("txt1").value;
                if (data1 == "submit") {
                    document.getElementById("Form1").submit();
                }
                else {
                    document.getElementById("div1").innerHTML = "You have said " + data1;
                }
            }
            catch (err) {
                document.getElementById("div1").innerHTML = err.Message;
            }
        }
    </script>
</head>
<body>
    <form id="Form1">
        If you want to submit, type the word: submit <br />
        <input id="Text1" name="txt1" type="text" />
        <div id="div2"></div>
        <input type="button"  önclick="javascript:validateData();" value="Validate Text" />";
    </form>
</body>

Anshu Krishna · Answer 2 · 2013-05-21T20:40:00

On a different note here is a simple calculator

HTML

<!DOCTYPE html>
<html>
	<head>
		<title>Simple Calculator</title>
		<style type="text/css">
			#cntr {
				border: 1px solid black;
				display: inline-block;
				position: absolute;
				font-size: 50px;
			}
			button {
				width: 2em;
				font-size: 50px;
			}
		</style>
		<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
		<script type="text/javascript">
			var d;
			var val1 = 0;
			var val = 0;
			var op = '';
			$(document).ready(function() {
				d = document.getElementById("disp");
				var cntr = $("#cntr");
				var doc = $(document);
				var left = (doc.width() - cntr.width()) / 2;
				var top = (doc.height() - cntr.height()) / 2;
				left=(left>=0)?left:-left;
				top=(top>=0)?top:-top;
				cntr.css("left", parseInt(left) + "px");
				cntr.css("top", parseInt(top) + "px");
			});
			function numhandler(id) {
				if (d.value == "0") {
					if (id == -1) {
						if (d.value.indexOf('.') == -1)
							d.value += '.';
					} else
						d.value = id;
				} else {
					if (id == -1) {
						if (d.value.indexOf('.') == -1)
							d.value += '.';
					} else
						d.value += id;
				}
				val = parseFloat(d.value);
			}

			function ophandler(id) {
				val1 = val;
				val = 0;
				op = id;
				d.value = 0;
			}

			function eqhandler() {
				if (op) {
					switch(op) {
						case"+":
							d.value = val1 + val;
							break;
						case"-":
							d.value = val1 - val;
							break;
						case"X":
							d.value = val1 * val;
							break;
						case"/":
							if (val != 0)
								d.value = val1 / val;
							else
								alert("Cannot divide by zero");
							break;
					}
					val = parseFloat(d.value);
				}
			}
		</script>
	</head>
	<body>
		<div id="cntr">
			<div style="text-align:center;font-weight:bold;font-style:italic;">Calculator</div>
			<table>
				<tr><td colspan="4"><input id="disp" style="text-align: right;font-size: 40px;" type="text" size="20" maxlength="20" disabled="disabled" value="0" /></td></tr>
				<tr>
					<td><button id="btn1" onclick="numhandler(1)">1</button></td>
					<td><button id="btn2" onclick="numhandler(2)">2</button></td>
					<td><button id="btn3" onclick="numhandler(3)">3</button></td>
					<td><button id="btnac" onclick="d.value=0;val=parseFloat(d.value);">AC</button></td>
				</tr>
				<tr>
					<td><button id="btn4" onclick="numhandler(4)">4</button></td>
					<td><button id="btn5" onclick="numhandler(5)">5</button></td>
					<td><button id="btn6" onclick="numhandler(6)">6</button></td>
					<td><button id="btnpls" onclick="ophandler('+')">+</button></td>
				</tr>
				<tr>
					<td><button id="btn7" onclick="numhandler(7)">7</button></td>
					<td><button id="btn8" onclick="numhandler(8)">8</button></td>
					<td><button id="btn9" onclick="numhandler(9)">9</button></td>
					<td><button id="btnmin" onclick="ophandler('-')">-</button></td>
				</tr>
				<tr>
					<td><button id="btn0" onclick="numhandler(0)">0</button></td>
					<td><button id="btndot" onclick="numhandler(-1)">.</button></td>
					<td><button id="btnmul" onclick="ophandler('X')">X</button></td>
					<td><button id="btndiv" onclick="ophandler('/')">/</button></td>
				</tr>
				<tr>
					<td colspan="4"><button style="width:9em" id="btnequl" onclick="eqhandler()">=</button></td>
				</tr>
			</table>
		</div>
	</body>
</html>

Javascript form validiator without submit

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