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HOME > Javascript Tips & Tricks : การใช้งาน JavaScript ร่วมกับ Form > JavaScript HTML Check Multiple Input TextBox/Text Field

JavaScript HTML Check Multiple Input TextBox/Text Field

JavaScript HTML Check Multiple Input Text Field ตัวอย่างนี้จะเป็นการใช้ JavaScript ควบคุม การตรวจสอบค่าว่างของ Text Field กรณีที่ช่องกรอกข้อมูลมีหลายช่องและการส่งข้อมูลเป็นแบบ Array

Sample1 การใช้ JavaScript ในการตรวจสอบค่าว่างของ Text Field

<html>
<head>
<title>ThaiCreate.Com Tutorial</title>
</head>
<body>
<script language="javascript">
function fncSubmit()
{
	for(i=1;i<=document.form1.hdnLine.value;i++)
	{
		if(eval("document.form1.txtName"+i+".value")=="")
		{
			alert("Please input Input "+i+" Thank.");
			eval("document.form1.txtName"+i+".focus();")
			return false;
		}
	}
	document.form1.submit();
}
</script>
<form action="page.cgi" method="post" name="form1" onSubmit="JavaScript:return fncSubmit();">
Input 1 <input name="txtName[]" id="txtName1" type="text"><br>
Input 2 <input name="txtName[]" id="txtName2" type="text"><br>
Input 3 <input name="txtName[]" id="txtName3" type="text"><br>
Input 4 <input name="txtName[]" id="txtName4" type="text"><br>
Input 5 <input name="txtName[]" id="txtName5" type="text"><br>
<input type="hidden" name="hdnLine" value="5">
<input name="btnSubmit1" type="submit" value="Submit" >
</form>
</body>
</html>

HTML JavaScript Check Multi Input Text Field

Sample2 การใช้ JavaScript การตรวจสอบค่าแบบ Array และค่าที่ใช้ตรวจสอบ

<html>
<head>
<title>ThaiCreate.Com Tutorial</title>
</head>
<body>
<script language="javascript">
function fncSubmit()
{
	for(i=1;i<=document.form1.hdnLine.value;i++)
	{
		var name = document.getElementById('txtNum'+i);
		var stock = document.getElementById('hdnStock'+i);
		if(name.value == "")
		{
			alert('กรุณากรอกจำนวน');
			name.focus();
			return false;
		}

		if(isNaN(name.value))
		{
			alert('กรุณากรอกตัวเลข');
			name.focus();
			return false;
		}

		if(name.value > stock.value)
		{
			alert('กรุณากรอก <= ' + stock.value);
			name.focus();
			return false;
		}

		if(name.value <= 0)
		{
			alert('กรุณากรอก > 0');
			name.focus();
			return false;
		}

	}
	document.form1.submit();
}
</script>
<form action="page.cgi" method="post" name="form1" onSubmit="JavaScript:return fncSubmit();">

Input 1 <input name="txtNum1" id="txtNum1" type="text"><br>
			  <input name="hdnStock1" id="hdnStock1" type="hidden" value="2">

Input 2 <input name="txtNum2" id="txtNum2" type="text"><br>
			  <input name="hdnStock2" id="hdnStock2" type="hidden" value="4">

Input 3 <input name="txtNum3" id="txtNum3" type="text"><br>
			  <input name="hdnStock3" id="hdnStock3" type="hidden" value="6">

Input 4 <input name="txtNum4" id="txtNum4" type="text"><br>
			  <input name="hdnStock4" id="hdnStock4" type="hidden" value="8">

Input 5 <input name="txtNum5" id="txtNum5" type="text"><br>
			  <input name="hdnStock5" id="hdnStock5" type="hidden" value="10">

<input type="hidden" name="hdnLine" value="5">
<input name="btnSubmit1" type="submit" value="Submit" >
</form>
</body>
</html>

Sample3 การใช้ JavaScript การตรวจสอบค่าแบบ Array และค่าที่ใช้ตรวจสอบ โดย Loop ด้วย PHP

<html>
<head>
<title>ThaiCreate.Com Tutorial</title>
</head>
<body>
<script language="javascript">
function fncSubmit()
{
	for(i=1;i<=document.form1.hdnLine.value;i++)
	{
		var name = document.getElementById('txtNum'+i);
		var stock = document.getElementById('hdnStock'+i);
		if(name.value == "")
		{
			alert('กรุณากรอกจำนวน');
			name.focus();
			return false;
		}

		if(isNaN(name.value))
		{
			alert('กรุณากรอกตัวเลข');
			name.focus();
			return false;
		}

		if(name.value > stock.value)
		{
			alert('กรุณากรอก <= ' + stock.value);
			name.focus();
			return false;
		}

		if(name.value <= 0)
		{
			alert('กรุณากรอก > 0');
			name.focus();
			return false;
		}

	}
	document.form1.submit();
}
</script>
<form action="page.cgi" method="post" name="form1" onSubmit="JavaScript:return fncSubmit();">

<?
for($i=1;$i<=10;$i++)
{
?>
Input <?php echo $i;?> <input name="txtNum<?php echo $i;?>" id="txtNum<?php echo $i;?>" type="text"><br>
			  <input name="hdnStock<?php echo $i;?>" id="hdnStock<?php echo $i;?>" type="hidden" value="2">
<?
}
?>
<input type="hidden" name="hdnLine" value="<?php echo $i;?>">
<input name="btnSubmit1" type="submit" value="Submit" >
</form>
</body>
</html>

Property & Method (Others Related)

JavaScript HTML Check Input TextBox/Text Field

ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน Source Code 2.0 ของทีมงานไทยครีเอท

ลองใช้ค้นหาข้อมูล


	By :	ThaiCreate.Com Team (บทความเป็นลิขสิทธิ์ของเว็บไทยครีเอทห้ามนำเผยแพร่ ณ เว็บไซต์อื่น ๆ)
	Score Rating :
	Create/Update Date :	2008-08-18 01:03:36 / 2012-03-31 07:20:14
	Download :	No files

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