Pin Potential to CC Ground Pin b a 0.5V to 7.0V b a 0.5V to 7.0V Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output b a 30 mA to 5.0 mA e in HIGH State (with V Standard Output 0V) CC b 0.5V to 5.5V 0.5V to V CC b a TRI...
document.webkitHidden : document.hidden; if (isHidden) { document.removeEventListener('visibilitychange', visiChangecb); isOnceHidden = true; } }; // 由于在部分ipad上调起地图时,isHidden也为false;但是在visibilitychange事件里有时能得到正确的isHidden,有时也一直为false; // 为了提高准确性,通过...