(function(){
let w = window.innerWidth;
function setHeaderCssVar() {
const headerEle = document.getElementById('shoplaza-section-header');
if(!headerEle){ return };
document.body.style.setProperty('--window-height', `${window.innerHeight}px`);
document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`);
const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide');
if (mdScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`);
}
const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide');
if (pcScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`);
}
}
function handlResize() {
if(w == window.innerWidth){return};
w = window.innerWidth;
setHeaderCssVar();
};
function init(){
setHeaderCssVar();
window.removeEventListener('resize', window._theme_header_listener)
window._theme_header_listener = handlResize;
window.addEventListener('resize', window._theme_header_listener);
}
init();
})();
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Description
Karaoke Board PT2399 Reverberation With AD828 Preamplifier Microphone Board mic Preamp Board PT2399
introduction
Microphone board with karaoke OK chip PT2399, patch technology, stable performance, microphone board before and after the amplification are used AD828 fever level opener chip, through the jumper cap set, electret microphone and mobile microphone can be used , Power supply using a single power supply, a rectifier circuit, you can AC and DC.
