「console.log is only available after you have opened the Developer Tools」只能說花熱發...
練習打包成小工具 console_log_fallback.js
(function(){
'use strict';
var _scripts = document.getElementsByTagName('script');
var _script = _scripts[_scripts.length-1];
var _url = _script.src;
var _qi = _url ? _url.indexOf('?') : -1;
var alertStead = false;
var i, param, params = _url.substr(_qi + 1).split('&');
for (i = 0; i < params.length; i++) {
param = params[i].split('=');
if (param[0]=='alert' && parseInt(param[1])) {
alertStead = true;
}
}
if (typeof console === "undefined" || typeof console.log === "undefined") {
console = {};
if (alertStead) {
console.log = function(msg) {
alert(msg);
};
} else {
console.log = function() {};
}
}
})();
使用以下方式時, 在 IE 可以用 alert 來替代 console.log 除錯:<script src="console_log_fallback.js?alert=1" type="text/javascript"></script>