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@dtipson
Created September 25, 2018 19:45
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Sending postMessage events
function throttle(fn, threshhold = 250, scope) {
var last,
deferTimer;
return function () {
var context = scope || this;
var now = +new Date,
args = arguments;
if (last && now < last + threshhold) {
// hold on to it
clearTimeout(deferTimer);
deferTimer = setTimeout(function () {
last = now;
fn.apply(context, args);
}, threshhold);
} else {
last = now;
fn.apply(context, args);
}
};
}
function sendHeight(){
var $container = document.querySelector('body > .container');
if($container && $container.offsetHeight){
parent.postMessage($container.offsetHeight, "*");
}
}
if(parent.postMessage){
addEventListener('resize', throttle(sendHeight, 100));
addEventListener("DOMContentLoaded", sendHeight);
}
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