do function if condition in javaScript !

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I have two function in javaScript !
like these :

JavaScript

function first()
{
var a= 10;
}

function second()
{
//when a=10 run this function
}

and i have a button loke this:

HTML

<button>Button</button>

now my problem :
I want the second function delay and when a=10 run it !
How i can do this ?

Posted 22-Nov-14 22:03pm

‫محم د‬‎

Updated 22-Nov-14 22:12pm

Afzaal Ahmad Zeeshan

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Afzaal Ahmad Zeeshan · Answer 1 · 2014-11-22T22:16:00

You would be calling the first function each time the change occurs, and then check against the value of a. Something like this,

JavaScript

function first()
{
  var a=10;
  // value will always be 10 if you assign it like above
  if(a == 10) {
    // trigger the second function
    second();
  }
}

.. to execute the first function on the button click, you can write the onclick event in the HTML as,

HTML

<button onclick="first()">Button</button>

Did you know, you can directly pass the value from HTML markup to the JavaScript as a parameter too?

HTML

<button onclick="first(10)">Button</button>

JavaScript

// a is the parameter; with 10 as value
function first(a) {
   // this is the body of the function..
   if(a == 10) {
      // execute the second function...
      second();
   }
}

Grant Weatherston · Answer 2 · 2014-11-26T04:01:00

from your brief question i understand you want a timer delay? or is 'a' an input? its its a timed delay where 10 = seconds do like this

JavaScript

function first(){

    var second = function(){
    alert("hello world");
    }
    //will start a timer and then run second() after 10secs
    window.setTimeout(second, 10000);
}

do function if condition in javaScript !

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