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Focal Point Forums WebFOCUS/FOCUS Forum on Focal Point [Solved] WF Maintain -- this.value doesn't work in JavaScript?
Focal Point Forums WebFOCUS/FOCUS Forum on Focal Point [Solved] WF Maintain -- this.value doesn't work in JavaScript? Read-Only TopicGo | Search | Notify | Tools |
| [Solved] WF Maintain -- this.value doesn't work in JavaScript? | Login/Join |
| Virtuoso |
I'm attempting to use the "this" feature in JavaScript triggers to self-reference fields on the screen, and it does not connect. Example: alert(this.value); Has anyone gotten this to work? J.This message has been edited. Last edited by: John_Edwards,  | ||
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| Virtuoso |
Ok, this is how you do it:
function OnEditBox2_Focus ( ) {
if (document.activeElement.value == '.') document.activeElement.value = '';
}
You people all owe me big. J. | |||
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| Platinum Member |
John, Here is an example from an old WF reporting front end app I did quite a few years ago: <select name="EVALDATE" style="margin-left:0px;" onblur="TestEvalDate(this.value);"> Checking my DHTML manual, 'this' is really only used in event handlers and object constructors. | |||
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| Virtuoso |
Thanks for posting! I experimented with that sort of thing in Maintain and I could not get it to function correctly. The example above is fully sufficient. Nice and clean -- create one edit field and then cut-and-paste to have the trigger appear and function correctly on all the edit fields on the page. J. | |||
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| Expert |
Keep in mind that when you use "this" it relates to the parent element. Thats why when it is in the "on" event it works. Waz...
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| Virtuoso |
Uh, it's not working in the On event. That's why I asked the question. The activeElement does though, so it is workable here. J. | |||
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| Expert |
One thing that maintain does with winforms for javascript, is to create a function to wrap around your script. Its like having the following...
<input type=button value="click here" onclick="On_Button_Click()">
...
function On_Button_Click() {
alert(this.value);
}
The 'this' in the function does not rel;ate to the control. Below will work because the 'this' is in the control.
<input type=button value="click here" onclick="On_Button_Click(this.value)">
...
function On_Button_Click(txt) {
alert(txt);
}
This is one of my pet hates for Maintain. There is a level of control you do not get with on events. What I do, for example, is create my own controls in an HTML object, and put that on the form. The HTML is what I coded not what Maintain generates. Waz...
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| Virtuoso |
activeElement could prove to be very useful to you then as well, as it greatly simplifies the issue, providing context in the trigger without the need for explicit definition of the object. J. | |||
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| Expert |
I agree, do you know which browsers support it ? Waz...
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| Virtuoso |
It's part of HTML 5. FF3 and IE6 both support it, Opera appears to, don't know about Safari. In spite of Apple's incessant efforts it is not installed on my machine so I can't test it. | |||
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| Expert |
Works with Opera, and Chrome Doesn't with Safari Waz...
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