Despite excessive googling I just don't get why my function doSomething does nothing in the situation below. Any idea why it doesn't work?
Many thanks, Gordon
var arrAttend=new object();
arrAttend["Blob"]='hello';
function doSomething() {
alert (arrAttend["Blob"]);
}
It's a typo, you should use new Object (capital O). Or use an Object Literal:
var arrAttend = {Blob: 'hello'};
function doSomething() {
alert (arrAttend.Blob);
}
Two problems :
object isn't definedTry this :
var arrAttend= {}; // that's the simplest way to create a new javascript object
arrAttend["Blob"]='hello';
function doSomething() {
alert (arrAttend["Blob"]);
}
doSomething();
Note that the first kind of error is very easily found when you look at the console : an error is displayed. I'd suggest you to use developer tools (for example Chrome's ones) so that you don't develop in the blind. BTW you'd see that using console.log instead of alert is most often more convenient.
Try this :
var arrAttend=new Object();
arrAttend["Blob"]='hello';
function doSomething() {
alert (arrAttend["Blob"]);
}
There's typo error in your code. And an object should be used like follow -
var arrAttend= {
name:'Blob'
};
function doSomething() {
alert (arrAttend.name);
}
doSomething();
arrAttend twice, first setting it to an empty object and then resetting it to a new object (constructed from the object literal).Try this:
// create object
var arrAttend=new Object();
arrAttend["Blob"]='hello';
function doSomething() {
alert (arrAttend["Blob"]);
}
// call function
doSomething();
doSomething()?