I have an unknown symbols displayed in my javascript application for try catch construction using czech language even when I use coding windows-1250. These symbols is displayed like question marks in diamond.
html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1250"/>
<title>Konstrukce Try/Catch</title>
<script type="text/javascript" src="number.js"></script>
</head>
<body>
<form name="formular" id="formular" action="#">
<div id="cisloDiv">Zadejte číslo v rozsahu 1 až 100: <input id="cislo" name="cislo"> <span id="informace"> </span></div>
<div><input id="odeslatFormular" type="submit"></div>
</form>
<script type="text/javascript">
function inicializuj() {
document.forms[0].onsubmit = function() { return zkontrolujFormular(this) };
}
window.onload = inicializuj;
</script>
</body>
</html>
javascript
function zkontrolujFormular() {
try {
var cislo = document.forms[0]["cislo"];
if (isNaN(cislo.value)) {
var chyba = new Array("Nejedná se o číslo",cislo);
throw chyba;
}
else if (cislo.value > 100) {
var chyba = new Array("Zadané číslo je větší jak 100",cislo);
throw chyba;
}
else if (cislo.value < 1) {
var chyba = new Array("Zadané číslo je menší jak 1",cislo);
throw chyba;
}
return true;
}
catch(objektVyjimky) {
var informace = document.getElementById("informace");
var textChyby = document.createTextNode(objektVyjimky[0]);
var novySpan = document.createElement("span");
novySpan.appendChild(textChyby);
novySpan.style.color = "#FF0000";
novySpan.style.fontWeight = "bold";
novySpan.setAttribute("id","informace");
var rodic = informace.parentNode;
rodic.replaceChild(novySpan,informace);
objektVyjimky[1].style.background = "#FF0000";
return false;
}
}
Have you tried using UTF-8 encoding?
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
or shorter:
<meta charset="utf-8" />
Nowadays using encoding other that UTF-8 is rather rare. You may need it in special circumstances, but whenever you can try to use UTF.
Now I have the solution, something was bad in my code because in solution (it is from learning material) it works.
Related
I'm a complete beginner with coding and I need to write a simple program with javascript and html for an exam, but I need to stick to my professor' standard (hence the specific way this code looks).
I tried to make a simple temperature converter (celsius to fahrenheit) but I don't understand why nothing happens when I click the "convert" button.
EDIT: for some reason the converter works fine here, but when I open it in a new window it doesn't work at all. Any idea why that might be?
function writeText (node, message) {
var nodeText = document.createTextNode(message);
node.replaceChild(nodeText, node.firstChild);
}
function convertHandler () {
try {
if (nodeTemperature.value =="") {
writeText("the field is empty");
return;
}
var temperature = Number(nodeTemperature.value);
if (isNaN(temperature)) {
writeText(nodeTemperature.value + " is not a number");
return;
}
nodeResult.value = temperature * (9/5) + 32;
} catch ( e ) {
alert("convertHandler" + e);
}
}
var nodeTemperature;
var nodeConvert;
var nodeResult;
var ConvertMessage;
function loadHandler () {
try {
nodeTemperature = document.getElementById("temperature");
nodeConvert = document.getElementById("convert");
nodeResult = document.getElementById("result");
nodeConvertMessage = document.getElementById("convertMessage");
nodeTemperature.value = "";
nodeResult.value = "";
nodeConvert.onclick = convertHandler;
var nodeText = document.createTextNode("");
nodeConvertMessage.appendChild(nodeText);
} catch ( e ) {
alert("loadHandler" + e);
}
}
window.onload = loadHandler;
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script scr="p3.js"></script>
<title>Temperature converter</title>
</head>
<body>
<h1>Convert Celsius in Fahrenheit</h1>
<input type="text"
id="temperature"/> Celsius
<br>
<input type ="button"
id="convert"
value="Convert"/>
<span id="convertMessage"></span>
<br>
<input type="text"
id="result"
readonly="readonly"/>Fahrenheit
</body>
</html>
If someone could help me that would save my (academic) life, thank you.
I'm creating a little script to try and search for an element in the array based on input.
var modulo = document.getElementById("modulo").value;
var link = [
"http://www.forumfree.it/",
"http://www.forumcommunity.net/",
"http://www.blogfree.net/",
];
if(modulo.indexOf(link) > -1) {
alert("Your site is:" + modulo);
}
else {
alert("Sorry, I don't found:" + modulo)
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Search element in array</title>
</head>
<body>
<input type="text" id="modulo" class="form">
</body>
</html>
Anyone can explain to me how to do that (if there's another way to do it better, inform me), and why my code doesn't run? Thanks!
Code explanation: I've used var modulo to contain the value of the input. Then I've created a variable to contain the link. Then if-else statement and indexOf to search and find it.
Thanks, the code solution is: https://plnkr.co/edit/bDt4n34KBFAvZrSWmb4a?p=preview
You can try with this plunker https://plnkr.co/edit/bDt4n34KBFAvZrSWmb4a?p=preview it used event trigger to have a button to search website :
<button onclick="myFunction()">Search</button>
and I wrote your code into a function.
I hope this will help you
The final state :
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
<script src="script.js"></script>
</head>
<body>
<input type="text" id="modulo" class="form">
<button onclick="myFunction()">Search</button>
</body>
var link = [
"http://www.forumfree.it/",
"http://www.forumcommunity.net/",
"http://www.blogfree.net/",
];
function myFunction() {
var input = document.getElementById("modulo");
var results = [];
for(var i = 0; i < link.length; i++) {
if(link[i].indexOf(input.value) > -1) {
results.push(link[i]);
}
}
if(results.length == 1) {
alert("Your site is:" + results[0]);
}
else if (results.length > 1){
alert("Sorry, your search return more than one result:" + results)
}
else {
alert("Sorry, I don't found:" + input.value)
}
}
You have
if(modulo.indexOf(link) > -1)
but I think that it should be
if(link.indexOf(modulo) > -1)
Assuming that modulo is a single string element, this will search the link array for that element and return the index of that element.
I think you were on the right track. You just need a few things:
a button to initiate the search
put your code in a function so you can call it
you want to search the array link for the value of the input modulo
function findIt() {
var modulo = document.getElementById("modulo").value;
var link = [
"http://www.forumfree.it/",
"http://www.forumcommunity.net/",
"http://www.blogfree.net/",
];
if (link.indexOf(modulo) > -1) {
alert("Your site is:" + modulo);
} else {
alert("Sorry, I don't found:" + modulo)
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Search element in array</title>
</head>
<body>
<input type="text" id="modulo" class="form">
<input type="button" onclick="findIt()" value="find it">
</body>
</html>
function runscript() {
var modulo = document.getElementById("modulo").value;
var link = [
"http://www.forumfree.it/",
"http://www.forumcommunity.net/",
"http://www.blogfree.net/",
];
var found = false;
for(var i = 0; i < link.length; i++) {
if (link[i].indexOf(modulo) > -1) {
alert("Your site is:" + link[i]);
found = true;
}
}
if (!found) {
alert("Sorry, I don't found:" + modulo)
}
}
And the HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Search element in array</title>
</head>
<body>
<input type="text" id="modulo" class="form">
<input type="button" onclick="runscript()" value="search" />
</body>
</html>
You will need to press button for search
Firstly this may sound like a duplicate question but I was unable to resolve my problem using the previous asked questions:
This is my HTML page:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<script>
function test() {
var totalids='XYZ##';
var variable_name=document.getElementById('p1').value.replace(/^\s+|\s+$/g,'');
var result = totalids.match(/variable_name/i);
if (result){
alert('Matched');
} else {
alert("Not Matched");
}
}
</script>
</head>
<body>
<input type="button" value="click on me" onclick="test()">
<input type="text" value="xyz" id="p1">
</body>
</html>
This program is not matching my String.I want to match my string using case-insensitive match.I know the problem lies in this line:
var result = totalids.match(/variable_name/i);
I am unable to pass variable in match function.I can do this;
var re = new RegExp(str1, "g");
But I don't know how to do cases-insensitive search using above line.
Here is how:
var re = new RegExp(str1, "gi");
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script language="javascript" type="text/javascript">
function abc()
{
ansArray = ['a'];
document.write('<input type = "button" value = "a">');
document.write('<input type = "button" value = "b">');
var myButton = document.getElementsByTagName("input");
myButton[0].onclick = function() {
if(ansArray[0] == 'a')
myButton[0].style.backgroundColor = "green";
else
myButton[0].style.backgroundColor = "red";
}
myButton[1].onclick = function() {
if(ansArray[0] == 'b')
myButton[1].style.backgroundColor = "green";
else
myButton[1].style.backgroundColor = "red";
}
}
</script>
</head>
<body onload="abc()">
</body>
</html>
This code segment is to change the colour of the two buttons on click event,works fine in chrome and firefox but the onclick functions does not work in IE9. Please help... Thanks in advance
Try calling the function like
(function abc(){
// code here
})();
Also use ; after each function expression, i.e. myButton[0].onclick = function() {...};.
Working here.
I have function that opens up a window, and the values from the newly opened window are listed in the opener window.
The 2nd window - has this function:
function AddOtherRefDoc(name, number) {
var remove = "<a href='javascript:void(0);' onclick='removeRefDoctor(this)'>Remove</a>";
var html = "<li><b> Referral Doctor: </b>"+name+"<b>, Referral No: </b>"+number+ " " +remove+" <input type='text' name='ref_docs' value='"+name+"'></input><input type='text' name='ref_nos' value='"+number+"'></input></li>";
opener.jQuery("#r_docs").append(jQuery(html));
}
The function that calls the one above is:
function addRefDoc(){
var count = 0;
var ref_docarray ;
var ref_noarray ;
<%for(int i1=0; i1<vec.size(); i1++) {
prop = (Properties) vec.get(i1);
String ref_no = prop.getProperty("referral_no","");
String ref_name = (prop.getProperty("last_name", "")+ ","+ prop.getProperty("first_name", ""));
%>
if(document.getElementById("refcheckbox_<%=ref_no%>").checked) {
count++;
if ((ref_doctor!=null)&&(ref_doctor!="")&&(ref_docno!=null)&&(ref_docno!="")) {
ref_docarray = ref_doctor.split(";");
ref_noarray = ref_docno.split(";");
if ((containsElem(ref_docarray,"<%=ref_name%>"))||(containsElem(ref_noarray,<%=ref_no%>))) {
alert("Referral doctor " + "<%=ref_name%>" + " already exists");
} else {
AddOtherRefDoc("<%=ref_name%>", <%=ref_no%>);
}
} else {
AddOtherRefDoc("<%=ref_name%>", <%=ref_no%>);
}
}
<%} %>
self.close();
}
function containsElem(array1,elem) {
for (var i=0;i<array1.length;i++) {
if(array1[i]==elem){
return true;
} else{
return false;
}
}
}
When this function is called, it is supposed to carry the 2 input elements "ref_docs" and "ref_nos" into the page that opened this window. But it is not doing so. It lists the elements alright but when I try to use "ref_docs" and "ref_nos" in another Javascript function in the 1st window, I see that "ref_nos" and "ref_docs" are empty.
What am I doing wrong?
function updateRd(){
var ref_docs = jQuery("#updatedelete").find('input[name="ref_docs"]');
var ref_nos = jQuery("#updatedelete").find('input[name="ref_nos"]'); alert(ref_docs.val() + ref_nos.val());
var rdocs = new Array();
var rnos = new Array();
ref_docs.each(function() { rdocs.push($(this).val()); } );
ref_nos.each(function() { rnos.push($(this).val()); } );
$('#r_doctor').val(rdocs.join(";"));
$('#r_doctor_ohip').val(rnos.join(";")); }
–
This function returns an error saying "ref_docs" and "ref_nos" are undefined.
I think it is trying to use the jQuery on the other page to find "#r_docs" on the current page.
Try:
jQuery(opener.document).find("#r_docs").append(html);
UPDATE:
I created index.html:
<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> - jsFiddle demo</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.5.2.js"></script>
<script type="text/javascript">
window.jQuery = jQuery;
function openChild ()
{
var mychildwin = window.open("child.html");
}
</script>
</head>
<body>
<input type="button" value="click" onclick="openChild();" />
<div id="r_docs">
Redocs here.
</div>
</body>
</html>
and child.html:
<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> - jsFiddle demo</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.5.2.js"></script>
<script type="text/javascript">
function AddOtherRefDoc(name, number) {
var remove = "<a href='javascript:void(0);' onclick='removeRefDoctor(this)'>Remove</a>";
var html = "<li><b> Referral Doctor: </b>"+name+"<b>, Referral No: </b>"+number+ " " +remove+" <input type='text' name='ref_docs' value='"+name+"'></input><input type='text' name='ref_nos' value='"+number+"'></input></li>";
jQuery(opener.document).find("#r_docs").append(html);
}
</script>
</head>
<body>
<input type="button" value="click" onclick="AddOtherRefDoc('name', 42);"/>
</body>
</html>
UPDATE2:
in your update function document.updatedelete has no attributes ref_docs and ref_nos.
try:
jQuery("#updatedelete")
.find('input[name="ref_docs"], input[name="ref_nos"]')
Where your form is
<form id="updatedelete" ... >
Your function that accesses the DOM elements is incorrect. updatedelete is not a property of document, nor will accessing a ref_docs or ref_nos property automatically build a collection of input elements. Since you're using jQuery already, try this:
var ref_docs = $('input[name="ref_docs"]');
var ref_nos = $('input[name="ref_nos"]');
That will give you Array (or at least array-like) objects that will let you access your inputs:
var rdocs = new Array();
var rnos = new Array();
ref_docs.each(function() { rdocs.push($(this).val()); } );
ref_nos.each(function() { rnos.push($(this).val()); } );
$('#r_doctor').val(rdocs.join(";"));
$('#r_doctor_ohip').val(rnos.join(";"));