Javascript Form - 如何請在提交表單之前檢查文本輸入字段框值
我們想知道如何請在提交表單之前檢查文本輸入字段框值。
<HTML>
<HEAD>
<SCRIPT>
function checkLawyer(str) {
if ((str.toUpperCase() == "LAWYER") || (str.toUpperCase() == "ATTORNEY"))
console.log ("Lawyers are not wanted here...");
else
console.log("Your application will be evaluated!");
}
</SCRIPT>
</HEAD>
<BODY>
<FORM name="theForm">
Enter Your Profession:
<INPUT type=text name="userProf">
<INPUT type=button
name="theButton"
value="SUBMIT QUERY"
onClick="checkLawyer(window.document.theForm.userProf.value)";>
</FORM>
</BODY>
</HTML>
The code above is rendered as follows:
【form】
