[SOLVED] Chaining option

When using chaining, it all works fine if you manually change the values in the comobox. However if we change the value in comobox using javascript EX: document.form2.region.selectedIndex = 2;

then chaining doesn't work

Why

This message has been edited. Last edited by: Kerry,

Posts: 61 | Location: New York City | Registered: July 20, 2006

Francis Mariani

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Because JavaScript functions are triggered by the onChange event. If you're changing the selected value in a select list with JavaScript, you have to call the Javascript normally called by the OnChange event - the onChange is not detected when JavaScript is used.

Francis

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dhagen

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As Francis typed, try:

document.form2.region.onchange();

This may not work, but standard DOM references will. If the id of the select box is 'combobox1', then it would be:

document.getElementById('combobox1').onchange();

"There is no limit to what you can achieve ... if you don’t care who gets the credit." Roger Abbott

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Francis Mariani

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Thanks for that code.

Francis

Give me code, or give me retirement. In FOCUS since 1991

Production: WF 7.7.05M, Dev Studio, BID, MRE, WebSphere, DB2 / Test: WF 8.1.05M, App Studio, BI Portal, Report Caster, jQuery, HighCharts, Apache Tomcat, MS SQL Server

Posts: 10577 | Location: Toronto, Ontario, Canada | Registered: April 27, 2005

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jlsnyc

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What we are doing is. A reset button is used to rest the combobox back to the first Value.

after the combobox has been reset by javascript the chained combobox still have the values from the parent combobox before the reset.

Example. If we reset the first box to all the second should be loaded with all values. mannully this works, but don't if you change it with Javascript.

Posts: 61 | Location: New York City | Registered: July 20, 2006

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StuBouyer

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As Francis already pointed out, what you are seeing is the normal behaviour when changing HTML controls with javascript. A change from javascript doesn't count as an OnChange() for that control.

So when you reset the combobox with javascript, the HTML and WebFOCUS are not yet aware of the change. Use the code that dhagen posted or try the populateDynamicCtrl(ctrl); to force the chaining code to run.

Cheers

Stu

WebFOCUS 8.2.03 (8.2.06 in testing)

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Tony A

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I do this many times when I pull a value for a particular User - I store the last choice made by a user so that they can be presented with that the next time they run the process.

All you have to issue after changing the selectedIndex value is -

   DoResetDownChainControls(document.getElementById("combobox1"));

Where combobox1 is the Id of the control you have just changed. The JavaScript function "DoResetDownChainControls" is contained in ibirls2.js as supplied by IB.

T