我有一个外部js文件链接到我的html和bundle.js文件，该文件由webpack链接到html。
在index.html代码中
<script src="js/main.js"></script>
<script type="text/javascript" src="bundle.min.js"></script>`
问题是main.js中的函数在运行webpack并捆绑代码后，在reactjs中的页面加载时只被调用一次。
main.js文件代码是
(function () {
'use strict';
var isMobile = {
Android: function() {
return navigator.userAgent.match(/Android/i);
},
BlackBerry: function() {
return navigator.userAgent.match(/BlackBerry/i);
},
iOS: function() {
return navigator.userAgent.match(/iPhone|iPad|iPod/i);
},
Opera: function() {
return navigator.userAgent.match(/Opera Mini/i);
},
Windows: function() {
return navigator.userAgent.match(/IEMobile/i);
},
any: function() {
return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Opera() || isMobile.Windows());
}
};
var mobileMenuOutsideClick = function() {
$(document).click(function (e) {
var container = $("#fh5co-offcanvas, .js-fh5co-nav-toggle");
if (!container.is(e.target) && container.has(e.target).length === 0) {
if ( $('body').hasClass('offcanvas') ) {
$('body').removeClass('offcanvas');
$('.js-fh5co-nav-toggle').removeClass('active');
}
}
});
};
var offcanvasMenu = function() {
$('#page').prepend('<div id="fh5co-offcanvas" />');
$('#page').prepend('<a href="#" class="js-fh5co-nav-toggle fh5co-nav-toggle fh5co-nav-white"><i></i></a>');
var clone1 = $('.menu-1 > ul').clone();
$('#fh5co-offcanvas').append(clone1);
var clone2 = $('.menu-2 > ul').clone();
$('#fh5co-offcanvas').append(clone2);
$('#fh5co-offcanvas .has-dropdown').addClass('offcanvas-has-dropdown');
$('#fh5co-offcanvas')
.find('li')
.removeClass('has-dropdown');
// Hover dropdown menu on mobile
$('.offcanvas-has-dropdown').mouseenter(function(){
var $this = $(this);
$this
.addClass('active')
.find('ul')
.slideDown(500, 'easeOutExpo');
}).mouseleave(function(){
var $this = $(this);
$this
.removeClass('active')
.find('ul')
.slideUp(500, 'easeOutExpo');
});
$(window).resize(function(){
if ( $('body').hasClass('offcanvas') ) {
$('body').removeClass('offcanvas');
$('.js-fh5co-nav-toggle').removeClass('active');
}
});
};
var burgerMenu = function() {
$('body').on('click', '.js-fh5co-nav-toggle', function(event){
var $this = $(this);
if ( $('body').hasClass('overflow offcanvas') ) {
$('body').removeClass('overflow offcanvas');
} else {
$('body').addClass('overflow offcanvas');
}
$this.toggleClass('active');
event.preventDefault();
});
};
var fullHeight = function() {
if ( !isMobile.any() ) {
$('.js-fullheight').css('height', $(window).height());
$(window).resize(function(){
$('.js-fullheight').css('height', $(window).height());
});
}
};
var contentWayPoint = function() {
var i = 0;
$('.animate-box').waypoint( function( direction ) {
if( direction === 'down' && !$(this.element).hasClass('animated-fast') ) {
i++;
$(this.element).addClass('item-animate');
setTimeout(function(){
$('body .animate-box.item-animate').each(function(k){
var el = $(this);
setTimeout( function () {
var effect = el.data('animate-effect');
if ( effect === 'fadeIn') {
el.addClass('fadeIn animated-fast');
} else if ( effect === 'fadeInLeft') {
el.addClass('fadeInLeft animated-fast');
} else if ( effect === 'fadeInRight') {
el.addClass('fadeInRight animated-fast');
} else {
el.addClass('fadeInUp animated-fast');
}
el.removeClass('item-animate');
}, k * 200, 'easeInOutExpo' );
});
}, 100);
}
} , { offset: '85%' } );
};
var dropdown = function() {
$('.has-dropdown').mouseenter(function(){
var $this = $(this);
$this
.find('.dropdown')
.css('display', 'block')
.addClass('animated-fast fadeInUpMenu');
}).mouseleave(function(){
var $this = $(this);
$this
.find('.dropdown')
.css('display', 'none')
.removeClass('animated-fast fadeInUpMenu');
});
};
var goToTop = function() {
$('.js-gotop').on('click', function(event){
event.preventDefault();
$('html, body').animate({
scrollTop: $('html').offset().top
}, 500, 'easeInOutExpo');
return false;
});
$(window).scroll(function(){
var $win = $(window);
if ($win.scrollTop() > 200) {
$('.js-top').addClass('active');
} else {
$('.js-top').removeClass('active');
}
});
};
// Loading page
var loaderPage = function() {
$(".fh5co-loader").fadeOut("slow");
};
var counter = function() {
$('.js-counter').countTo({
formatter: function (value, options) {
return value.toFixed(options.decimals);
},
});
};
var counterWayPoint = function() {
if ($('#fh5co-counter').length > 0 ) {
$('#fh5co-counter').waypoint( function( direction ) {
if( direction === 'down' && !$(this.element).hasClass('animated') ) {
setTimeout( counter , 400);
$(this.element).addClass('animated');
}
} , { offset: '90%' } );
}
};
var parallax = function() {
if ( !isMobile.any() ) {
$(window).stellar({
horizontalScrolling: false,
hideDistantElements: false,
responsive: true
});
}
};
var testimonialCarousel = function(){
var owl = $('.owl-carousel-fullwidth');
owl.owlCarousel({
items: 1,
loop: true,
margin: 0,
nav: false,
dots: true,
smartSpeed: 800,
autoHeight: true
});
};
var sliderMain = function() {
$('#fh5co-hero .flexslider').flexslider({
animation: "fade",
slideshowSpeed: 5000,
directionNav: true,
start: function(){
setTimeout(function(){
$('.slider-text').removeClass('animated fadeInUp');
$('.flex-active-slide').find('.slider-text').addClass('animated fadeInUp');
}, 500);
},
before: function(){
setTimeout(function(){
$('.slider-text').removeClass('animated fadeInUp');
$('.flex-active-slide').find('.slider-text').addClass('animated fadeInUp');
}, 500);
}
});
$('#fh5co-hero .flexslider .slides > li').css('height', $(window).height());
$(window).resize(function(){
$('#fh5co-hero .flexslider .slides > li').css('height', $(window).height());
});
};
$(function(){
mobileMenuOutsideClick();
offcanvasMenu();
burgerMenu();
contentWayPoint();
sliderMain();
dropdown();
goToTop();
loaderPage();
counterWayPoint();
counter();
parallax();
testimonialCarousel();
fullHeight();
});
}());
我希望我的main.js中的代码不仅在重新加载时调用。我正在使用reactjs和webpack。 请帮我解决这个问题。谢谢。
答案 0 :(得分：1)
请注意，main.js中的代码包含在以下内容中：
(function () {
...
}());
上面的构造称为Immediately-Invoked Function Expression (IIFE) - 它使得内部代码立即被调用，因为任何函数内定义的所有内容只在此函数中可见（在函数范围外不可见），它也有助于不污染全局上下文。您可以阅读更多相关信息here。
如果你想有可能随时调用它，你应该使用普通函数（不是IIFE）：
function mainFunction() {
//your codde
}
然后你可以随时调用它（也可以在页面加载时）。