Stop execute javascript until onclick

Question

I'm looking for a method that stop excute a javascript until a onclick.

This is my script, but i don't know how to wait until a onclick.

<html>
<head>
<script type="text/javascript">

var stat = "*";

function setstat(but)  {
    stat = but;
}

function start() {
    alert('start');
    ...
    ...
    /* ??????? wait until stat != '*' ???????? */
    alert(stat);
    ...
    ...
}   
</script>

</head>
<body>
<input type='button' style="width: 100px;" value="Start" onclick="start();">
<br><br>
<input type='button' style="width: 100px;" value="Yes" onclick="setstat('yes')"> 
&nbsp;&nbsp;
<input type='button' style="width: 100px;"` ``value="No" onclick="setstat('no')">`
</body>
</html>

You should think of dividing the start() function into two function. First(): containing code above the line where you want to wait. Second(): containing rest of the code of start() function. You can call Second() in onclick of second and third input tag. — Prashant Borde
– Prashant Borde, Commented Dec 24, 2013 at 13:24

angabriel · Accepted Answer · 2014-10-14 17:02:37Z

1

You have to "think" in events. It looks like you want to execute the code at some point in the start function, when the stat is set to 'yes' or 'no'.

Every button onclick is calling a function, more precisely it actually expects a statement. Why not refactor your code and do that stuff when you press the yes button?

To make my point clear:

var stat = '*';

function start() {
  // code

  //until stat != '*';

  // move this code here -->
}

function setstat(but)  {
  stat = but;
  doReallyStart();
}

function doReallyStart() {
  // to here <--
}

This would do the same and is more readable.

edited Oct 14, 2014 at 17:02

answered Dec 24, 2013 at 13:19

angabriel

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Comments

lwfshensi · Accepted Answer · 2013-12-24 13:11:02Z

0

Maybe setTimeout and clearTimeout could satisfy your situation. you could put your js code in setTimeout,onClick event trigger clearTimeout

answered Dec 24, 2013 at 13:11

lwfshensi

1

1 Comment

Silviu Burcea Over a year ago

You don't know how much time you have to wait, Interval suits better than Timeout in my opinion. :)

Silviu Burcea · Accepted Answer · 2013-12-24 13:14:08Z

0

var execute = false;
var timeoutPolling = 1000;
var fn = function() {
  console.log('Hello');
};
var it = setInterval(function() {
  if (execute) {
    fn();
    clearInterval(it);
  }
}, timeoutPolling);

This worked in my Chrome Dev Tools, you just have to enable/disable the execute flag.

answered Dec 24, 2013 at 13:14

Silviu Burcea

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