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POSimple Javascript Onblur If else function
 

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  1. POSimple Javascript Onblur If else function
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    <p>This is my first week teaching myself javascript and i have run into a problem.</p> <p>I am trying to create a simple mortgage 'loan to value' calculator. My calculator works fine but I am trying to set up a minimum value validation for one of my two form fields.</p> <p>Here is a link to the page</p> <p><a href="http://alexmason.org/ltv.php" rel="nofollow">Link</a></p> <p>My code is below</p> <pre><code>function calculate (form) { var propVal = form.propertyValue.value; var loanAmt = form.mortgageAmount.value; var type = form.mortgageType.value; var ltv = loanAmt / propVal * 100 ; var roundedLtv = Math.floor(ltv); if ( type === "First Time Buyer" &amp;&amp; roundedLtv &lt;= 91 ) { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; We can help place your mortgage"); } else if ( type === "Moving Home" &amp;&amp; roundedLtv &lt;= 91 ) { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; We can help place your mortgage"); } else if ( type === "Remortgage" &amp;&amp; roundedLtv &lt;= 86 ) { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; We can help place your mortgage"); } else if ( type === "Buy To Let Purchase" &amp;&amp; roundedLtv &lt;= 81 ) { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; We can help place your mortgage"); } else if ( type === "Buy To Let Remortgage" &amp;&amp; roundedLtv &lt;= 76 ) { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; We can help place your mortgage"); } else { document.getElementById("result").innerHTML= ("Your loan to value is: &lt;b&gt;" + (roundedLtv) + "%&lt;/b&gt; &lt;br /&gt; Unfortunatly we cannot help you place a mortgage"); } } </code></pre> <p>All works ok until this point, where i am trying to alert the user that the loan amount needs to be larger than 45000. Below in the HTML you will see im am trying to use the onBlur function</p> <pre><code>function loancheck (propVal,loanAmt,form) { if (loanAmt &gt;= 45000) { document.getElementById("val1").innerHTML= ("Thank You"); } else { document.getElementById("val1").innerHTML= ("Higher"); } } </code></pre> <p>This is the html to go with it</p> <pre><code>&lt;form name="myform" ACTION="" METHOD="GET"&gt; Mortgage Type &lt;select name="mortgageType"&gt; &lt;option&gt;First Time Buyer&lt;/option&gt; &lt;option&gt;Moving Home&lt;/option&gt; &lt;option&gt;Remortgage&lt;/option&gt; &lt;option&gt;Buy To Let Purchase&lt;/option&gt; &lt;option&gt;Buy To Let Remortgage&lt;/option&gt; &lt;/select&gt; &lt;br /&gt; Value &lt;input name="propertyValue" type="text" value=""/&gt;&lt;br /&gt; Mortgage Amount &lt;input name="mortgageAmount" type="text" value="" onBlur="loancheck(this.value)" /&gt; &lt;p id="val1"&gt;&lt;/p&gt; &lt;INPUT TYPE="button" NAME="button" Value="Click" onClick="calculate(this.form)"&gt; &lt;/form&gt; &lt;br /&gt;&lt;br /&gt; &lt;p id="result"&gt; &lt;/p&gt; </code></pre> <p>Im sure I'm doing something fundamentally wrong but if someone could point it out to me i would be most thankful.</p>
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    1. COWhat is the issue here? No messages displayed in `#val1`? Please clarify in question.
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    2. COYes, no message was displayed in val1.
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    3. COThanks to everyone below who has had the patience to answer my question! I owe you all
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