js方法：
(function(){
if(typeof WeixinJSBridge=="object"&& typeof WeixinJSBridge.invoke == "function"){
handleFontSize();
}else{
if(document.addEventListener){
document.addEventListener("WeixinJSBridgeReady",handleFontSize,false);
}else if(document.attachEvent){
document.attachEvent("WeixinJSBridgeReady",handleFontSize);
document.attachEvent("onWeixinJSBridgeReady",handleFontSize);
}
};
function handleFontSize(){
WeixinJSBridge.invoke("setFontSizeCallback",{
"fontSize":0
});
WeixinJSBridge.on("menu:setfont",function(){
WeixinJSBridge.invoke("setFontSizeCallback",{
"fontSize":0
});
});
};
})();
css 针对ios微信
body{
-webkit-text-size-adjust: 100% !important;
text-size-adjust: 100% !important;
-moz-text-size-adjust: 100% !important;
}