写了一个,试试下面的两种操作
1、什么都不输入,点提交
2、只输入第一个,点提交
<html>
<head>
<script>
function checkFormat(){
var tempValue = document.all.text1.value;
if(tempValue == ""){
myAlert("span1");
return false;
} tempValue = document.all.text2.value;
if(tempValue == ""){
myAlert("span2");
return false;
}
return true;
}var flag = false;
var counter = 0;
function myAlert(id){
flag = !flag;
counter++;
if(flag){
document.getElementById(id).style.border = "1px solid red";
}else{
document.getElementById(id).style.border = "none";
}
if(counter < 6){
setTimeout("myAlert('" + id + "');",500);
}
}
</script>
</head>
<body>
<form>
<span id="span1">
<input type="text" name="text1"/>
</span>
<span id="span2">
<input type="text" name="text2"/>
</span>
<input type="submit" onclick="counter=0;return checkFormat()" value="提交"/>
</form>
</body>
</html>
1、什么都不输入,点提交
2、只输入第一个,点提交
<html>
<head>
<script>
function checkFormat(){
var tempValue = document.all.text1.value;
if(tempValue == ""){
myAlert("span1");
return false;
} tempValue = document.all.text2.value;
if(tempValue == ""){
myAlert("span2");
return false;
}
return true;
}var flag = false;
var counter = 0;
function myAlert(id){
flag = !flag;
counter++;
if(flag){
document.getElementById(id).style.border = "1px solid red";
}else{
document.getElementById(id).style.border = "none";
}
if(counter < 6){
setTimeout("myAlert('" + id + "');",500);
}
}
</script>
</head>
<body>
<form>
<span id="span1">
<input type="text" name="text1"/>
</span>
<span id="span2">
<input type="text" name="text2"/>
</span>
<input type="submit" onclick="counter=0;return checkFormat()" value="提交"/>
</form>
</body>
</html>
<html>
<head>
<style>
.color1{
border:1px solid red;
}
.color2{
border:1px solid blue;
}
</style>
<script type="text/javascript">
function blinklink()
{
var o = document.getElementById('blink');if (o.className == 'color1'){
o.className = 'color2'
}else{
o.className = 'color1'
}timer=setTimeout("blinklink()",100)
}
function stoptimer()
{
clearTimeout(timer)
}
window.setTimeout("stoptimer()",1000);
</script>
</head>
<body onload="blinklink()" >
<INPUT TYPE="text" id="blink" class='color1'></body>
</html>