Part 1: JavaScript Basics-2
Teil 2
Teil 2
Kartei Details
| Karten | 46 |
|---|---|
| Sprache | Deutsch |
| Kategorie | BWL |
| Stufe | Grundschule |
| Erstellt / Aktualisiert | 18.07.2016 / 15.12.2022 |
| Weblink |
https://card2brain.ch/box/part_1_javascript_basics2
|
| Einbinden |
<iframe src="https://card2brain.ch/box/part_1_javascript_basics2/embed" width="780" height="150" scrolling="no" frameborder="0"></iframe>
|
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nennen sie ein beispiel für FUNCTION LITERALS?
<html>
<head>
<script type="text/javascript">
<!--
var func = function(x,y){ return x*y };
function secondFunction(){
var result;
result = func(10,20);
document.write ( result );
}
//-->
</script>
</head>
<body>
<p>Click the following button to call the function</p>
<form>
<input type="button" onclick="secondFunction()" value="Call Function">
</form>
<p>Use different parameters inside the function and then try...</p>
</body>
</html>
nennen sie ein beispiel für ONCLICK EVENT?
<html>
<head>
<script type="text/javascript">
<!--
function sayHello() {
document.write ("Hello World")
}
//-->
</script>
</head>
<body>
<p> Click the following button and see result</p>
<input type="button" onclick="sayHello()" value="Say Hello" />
</body>
</html>
nennen sie ein beispiel für ONSUBMIT EVENT?
<html>
<head>
<script type="text/javascript">
<!--
function validation() {
all validation goes here
.........
return either true or false
}
//-->
</script>
</head>
<body>
<form method="POST" action="t.cgi" onsubmit="return validate()">
.......
<input type="submit" value="Submit" />
</form>
</body>
</html>
nennen sie ein beispiel für ONMOUSEOVER and ONMOUSEOUT EVENT?
<html>
<head>
<script type="text/javascript">
<!--
function over() {
document.write ("Mouse Over");
}
function out() {
document.write ("Mouse Out");
}
//-->
</script>
</head>
<body>
<p>Bring your mouse inside the division to see the result:</p>
<div onmouseover="over()" onmouseout="out()">
<h2> This is inside the division </h2>
</div>
</body>
</html>
nennen sie ein beispiel für STORING COOKIES?
<html>
<head>
<script type="text/javascript">
<!--
function WriteCookie()
{
if( document.myform.customer.value == "" ){
alert ("Enter some value!");
return;
}
cookievalue= escape(document.myform.customer.value) + ";";
document.cookie="name=" + cookievalue;
document.write ("Setting Cookies : " + "name=" + cookievalue );
}
//-->
</script>
</head>
<body>
<form name="myform" action="">
Enter name: <input type="text" name="customer"/>
<input type="button" value="Set Cookie" onclick="WriteCookie();"/>
</form>
</body>
</html>
nennen sie ein beispiel für READING COOKIES?
<html>
<head>
<script type="text/javascript">
<!--
function ReadCookie()
{
var allcookies = document.cookie;
document.write ("All Cookies : " + allcookies );
// Get all the cookies pairs in an array
cookiearray = allcookies.split(';');
// Now take key value pair out of this array
for(var i=0; i<cookiearray.length; i++){
name = cookiearray[i].split('=')[0];
value = cookiearray[i].split('=')[1];
document.write ("Key is : " + name + " and Value is : " + value);
}
}
//-->
</script>
</head>
<body>
<form name="myform" action="">
<p> click the following button and see the result:</p>
<input type="button" value="Get Cookie" onclick="ReadCookie()"/>
</form>
</body>
</html>
nennen sie ein beispiel für SETTING COOKIES EXPIRY DATE?
<html>
<head>
<script type="text/javascript">
<!--
function WriteCookie()
{
var now = new Date();
now.setMonth( now.getMonth() + 1 );
cookievalue = escape(document.myform.customer.value) + ";"
document.cookie="name=" + cookievalue;
document.cookie = "expires=" + now.toUTCString() + ";"
document.write ("Setting Cookies : " + "name=" + cookievalue );
}
//-->
</script>
</head>
<body>
<form name="formname" action="">
Enter name: <input type="text" name="customer"/>
<input type="button" value="Set Cookie" onclick="WriteCookie()"/>
</form>
</body>
</html>
nennen sie ein beispiel für DELETING A COOKIE?
<html>
<head>
<script type="text/javascript">
<!--
function WriteCookie()
{
var now = new Date();
now.setMonth( now.getMonth() - 1 );
cookievalue = escape(document.myform.customer.value) + ";"
document.cookie="name=" + cookievalue;
document.cookie = "expires=" + now.toUTCString() + ";"
document.write("Setting Cookies : " + "name=" + cookievalue );
}
//-->
</script>
</head>
<body>
<form name="formname" action="">
Enter name: <input type="text" name="customer"/>
<input type="button" value="Set Cookie" onclick="WriteCookie()"/>
</form>
</body>
</html>
nennen sie ein beispiel für JavaScript Page Refresh?
<html>
<head>
<script type="text/JavaScript">
<!--
function AutoRefresh( t ) {
setTimeout("location.reload(true);", t);
}
// -->
</script>
</head>
<body onload="JavaScript:AutoRefresh(5000);">
<p>This page will refresh every 5 seconds.</p>
</body>
</html>
nennen sie ein beispiel für ALERT DIALOG BOX?
<html>
<head>
<script type="text/javascript">
<!--
function Warn() {
alert ("This is a warning message!");
document.write ("This is a warning message!");
}
//-->
</script>
</head>
<body>
<p>Click the following button to see the result: </p>
<form>
<input type="button" value="Click Me" onclick="Warn();" />
</form>
</body>
</html>
nennen sie ein beispiel für CONFIRMATION DIALOG BOX?
<html>
<head>
<script type="text/javascript">
<!--
function getConfirmation(){
var retVal = confirm("Do you want to continue ?");
if( retVal == true ){
document.write ("User wants to continue!");
return true;
}else{
Document.write ("User does not want to continue!");
return false;
}
}
//-->
</script>
</head>
<body>
<p>Click the following button to see the result: </p>
<form>
<input type="button" value="Click Me" onclick="getConfirmation();" />
</form>
</body>
</html>
nennen sie ein beispiel für PROMPT DIALOG BOX?
<html>
<head>
<script type="text/javascript">
<!--
function getValue(){
var retVal = prompt("Enter your name : ", "your name here");
document.write("You have entered : " + retVal);
}
//-->
</script>
</head>
<body>
<p>Click the following button to see the result: </p>
<form>
<input type="button" value="Click Me" onclick="getValue();" />
</form>
</body>
</html>
nennen sie die syntax für VOID?
<head>
<script type="text/javascript">
<!--
void func()
javascript:void func()
OR
void(func())
javascript:void(func())
//-->
</script>
</head>
nennen sie ein beispiel für VOID?
<html>
<head>
<script type="text/javascript">
<!--
//-->
</script>
</head>
<body>
<p>Click the following, This won't react at all...</p>
<a href="javascript:void(document.write(“Hello : 0”))">Click me!</a>
</body>
</html>
nennen sie ein beispiel für PAGE PRINTING?
<head>
<script type="text/javascript">
<!--
//-->
</script>
</head>
<body>
<form>
<input type="button" value="Print" onclick="window.print()" />
</form>
</body>
nennen sie die Bitwise Operators ?
1. & (Bitwise AND)
2. | (Bitwise OR)
3. ^ (Bitwise XOR)
4. ~ (Bitwise Not)
5. << (Left Shift)
6. >> (Right Shift)
7. >>> (Right shift with Zero)
nennen sie die Assignment Operators?
1. = (Simple Assignment)
2. += (Add and Assignment)
3. -= (Subtract and Assignment)
4. *= (Multiply and Assignment)
5. /= (Divide and Assignment)
6. %= (Modules and Assignment)
nennen Sie die Miscellaneous Operators?
1. ?: (Conditional)
nennen sie die typeof Operators?
1. Number "number"
2. String "string"
3. Boolean "boolean"
4. Object "object"
5. Function "function "
6. Undefined "undefined"
7. Null "object"
wie lautet das gerüst eines if-Statements?
if (expression){
Statement(s) to be executed if expression is true
}
nennen sie ein beispiel eines if-statements?
<html>
<body>
<script type="text/javascript">
<!--
var age = 20;
if( age > 18 ) {
document.write("<b>Qualifies for driving</b>");
}
//-->
</script>
<p>Set the variable to different value and then try...</p>
</body>
</html>
wie lautet das gerüst eines if...else Statements?
if (expression){
Statement(s) to be executed if expression is true
}else{
Statement(s) to be executed if expression is false
}
nennen sie ein beispiel eines if...else Statements?
<html>
<body>
<script type="text/javascript">
<!--
var age = 15;
if( age > 18 ){
document.write("<b>Qualifies for driving</b>");
}else{
document.write("<b>Does not qualify for driving</b>");
}
//-->
</script>
<p>Set the variable to different value and then try...</p>
</body>
</html>
wie lautet das gerüst eines if...else if... Statements?
if (expression 1){
Statement(s) to be executed if expression 1 is true
}else if (expression 2){
Statement(s) to be executed if expression 2 is true
}else if (expression 3){
Statement(s) to be executed if expression 3 is true
}else{
Statement(s) to be executed if no expression is true
}
nennen Sie ein beispiel eines if...else if...Statements?
<html>
<body>
<script type="text/javascript">
<!--
var book = "maths";
if( book == "history" ){
document.write("<b>History Book</b>");
}else if( book == "maths" ){
document.write("<b>Maths Book</b>");
}else if( book == "economics" ){
document.write("<b>Economics Book</b>");
}else{
document.write("<b>Unknown Book</b>");
}
//-->
</script>
<p>Set the variable to different value and then try...</p>
</body>
</html>
nennen sie das gerüst eines SWITCH-CASE STATEMENTS?
switch (expression)
{
case condition 1: statement(s)
break;
case condition 2: statement(s)
break;
...
case condition n: statement(s)
break;
default: statement(s)
}
nennen sie ein beispiel eines SWITCH-CASE STATEMENTS?
<html>
<body>
<script type="text/javascript">
<!--
var grade='A';
document.write("Entering switch block<br />");
switch (grade)
{
case 'A': document.write("Good job<br />");
break;
case 'B': document.write("Pretty good<br />");
break;
case 'C': document.write("Passed<br />");
break;
case 'D': document.write("Not so good<br />");
break;
case 'F': document.write("Failed<br />");
break;
default: document.write("Unknown grade<br />")
}
document.write("Exiting switch block");
//-->
</script>
<p>Set the variable to different value and then try...</p>
</body>
</html>
nennen sie das gerüst einer WHILE LOOP SCHLEIFE?
while (expression){
Statement(s) to be executed if expression is true
}
nennen sie ein beispiel einer WHILE LOOP SCHLEIFEN?
<html>
<body>
<script type="text/javascript">
<!--
var count = 0;
document.write("Starting Loop ");
while (count < 10){
document.write("Current Count : " + count + "<br />");
count++;
}
document.write("Loop stopped!");
//-->
</script>
<p>Set the variable to different value and then try...</p>
</body>
</html>
nennen sie das gerüst für eine The do...while Loop?
do{
Statement(s) to be executed;
} while (expression);
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