-1.jpg)
郵箱地址：<input name="meail_input_name" type = "text" id="meail_input_id" value="" placeholder="請輸入正確的郵箱">
<input name="meail_check_name" type = "button"id="meail_check_id" value="效驗(yàn)郵箱" onclick="checkMeail()">
</form>
</center>
</br>
</body>
<script type="text/javascript">
function checkMeail(){
var meailAddress=document.getElementById("meail_input_id").value;
//長度
var meailLength = meailAddress.length;
//判斷含有@，“.”
var index1 = meailAddress.indexOf("@");
var index2 = meailAddress.indexOf(".");
var msg = "效驗(yàn)輸入的郵箱號n";
msg = "@所在的索引：==：" index1;
msg = "\\\’.\\\’所在的索引：==：" index2;
msg ="郵箱地址：" meailAddress "n";
msg ="驗(yàn)證郵箱地址的實(shí)例："
if (index1==-1||index2==-1||index1<index2) {
msg ="郵箱的基本要求:" "n";
msg ="必須含有\(zhòng)\\’@\\\’和\\\’.\\\’ n";
msg ="\\\’.\\\’必須在\\\’@\\\’后面n";
}else{
msg = "符合要求";
};
alert(msg);
}
</script>
</html>
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