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POHTML form not working properly
 

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  1. POHTML form not working properly
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    <p>I've got a very simple form on an HTML page I've done which works as follows. There are 2 buttons on the page "calculate" and "reset" The user inputs 3 numbers and when they click "calculate" it add's the values together and also calculates 1%, 2% and 3% of each number (and add's those values together too). The output is displayed in a table which looks something like this:</p> <p><code>input %</code> <br/> <code>input %</code><br/> <code>input %</code><br/> <code>total total</code><br/> <code>calculate reset</code></p> <p>Now my rather annoying problem is that I have replaced the buttons with images and since I've done this, once I click 'calculate' the values do not stay populated in the form and rather annoyingly in FF the page "refreshes" and skips back to the top too! What am I doing wrong? Here's the JS:</p> <pre><code>var sInput,dInput,pInput,inputTotal,sMonthly,dMonthly,pMonthly,sAnnual,dAnnual,pAnnual,monthlyT otal,annualTotal; function takeInput() { sInput=parseFloat(document.forms[0].txt1st.value); dInput=parseFloat(document.forms[0].txt2nd.value); pInput=parseFloat(document.forms[0].txt3rd.value); inputTotal=sInput+dInput+pInput; document.forms[0].spendtotal.value="£ " + inputTotal; } function isNan() { if (isNaN(sInput || pInput || dInput) == true) { alert("You entered an invalid character. Please reset the form."); } else { return(false); } } function calculateMonthly() { sMonthly=sInput*0.01; dMonthly=dInput*0.02; if (pInput &gt;= 300) { pMonthly=300*0.03; } else { pMonthly=pInput*0.03; } monthlyTotal=sMonthly+dMonthly+pMonthly; //rounded up numbers to the nearest whole number //i.e. .5+ document.forms[0].supermarket.value="£ " + Math.round(sMonthly); document.forms[0].deptstores.value="£ " + Math.round(dMonthly); document.forms[0].petrol.value="£ " + Math.round(pMonthly); document.forms[0].monthlytext.value="£ " + Math.round(monthlyTotal); } function calculateAnnual() { sAnnual=sMonthly*12; dAnnual=dMonthly*12; pAnnual=pMonthly*12; annualTotal=sAnnual+dAnnual+pAnnual; document.forms[0].supermarketAnnual.value="£ " + Math.round(sAnnual); document.forms[0].departmentstoreAnnual.value="£ " + Math.round(dAnnual); document.forms[0].petrolAnnual.value="£ " + Math.round(pAnnual); document.forms[0].annualresult.value="£ " + Math.round(annualTotal); } </code></pre> <p>And here's the code from the form:</p> <pre><code>&lt;input type="image" src="calculate-btn.gif" onClick="takeInput();calculateMonthly();calculateAnnual();"&gt; &lt;input type="image" src="reset-btn.gif" /&gt; </code></pre> <p>Weird thing is, if I don't use images then the form stays populated with the output and the buttons work fine. Please be gentle, I am a total Javascript Noob. </p> <p>Thanks</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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