Custom Button : Conditional Redirect to URL using Javascript

Question

I am connecting to the URL by using custom button when Update__c = true condition reamin all conditions these button connect to different URL. but when i used below code it showing URL Breaks, but the URl is working.I placed this code in Buttons Section. but IN URL it showing like that

https://na15.salesforce.com/servlet/if(%27true%27%20==%20%27true%27)%7B%20%20%20%20window.location.href%20=%20%27/_ui/core/email/author/EmailAuthor?id=a00i000000KtP5X%27%20;}

 if('{!Quote__c.Updated__c}' == 'true')
 {
   window.location.href = '/_ui/core/email/author/ EmailAuthor?id={!Quote__c.Id}' ;
}

Answer 1

If you want to execute JavaScript when the button is clicked (for your conditional logic), you need to use the "Execute JavaScript" and "OnClick JavaScript" options.

Answer 2

<apex:page>
<div id="output"></div>
<apex:includeScript value="/soap/ajax/28.0/connection.js"/>
<apex:includeScript value="/soap/ajax/28.0/apex.js"/>
<script>
    sforce.connection.sessionId = "{!$Api.Session_ID}";

    function setupPage() {

        var output = document.getElementById("output");
            alert(output);
        var startTime = new Date().getTime()

         try {
            var queryResult = sforce.connection.query("Select Id, Name,Industry From Account ");
            layoutResults(queryResult, output, startTime);
        } catch(error) {
            queryFailed(error, output);
        }
    }

    function queryFailed(error, out) {
        out.innerHTML = "<font color=red>An error has occurred:</font> <p>" + error;
    }

    function layoutResults(queryResult, out, startTime) {
        var timeTaken = new Date().getTime() - startTime;

        if (queryResult.size > 0) {
            var output = "";
            var records = queryResult.getArray('records');

            for (var i = 0; i < records.length; i++) {
                var account = records[i];
                output += account.Id + " " + account.Name + " [Industry - "  
                     + account.Industry + "]<BR>";
            }

            out.innerHTML = output + "<BR> <BR> query complexted in: " + timeTaken + " ms.";
        } else {
            out.innerHTML = "No records matched.";
        }
    }
    window.onload=setupPage();
</script>

</apex:page>

Answer 3

On button creation page choose option as URL. Which lies above the formulae box.