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I'm new to web development and I'm trying to understand how the DOM works.
I have a basic page with 2 buttons and some text. One of the buttons does a call to Jquery's Get function. My server returns some html with some script as well. Which is then added to my DIV on my main page which has an ID of 'content'
See below for the code.
<!DOCTYPE html>
<link rel="stylesheet" href="css/toastr.css">
<html>
<body>
<h1>My Main Page </h1>
<button class="alertmsg">click me</button>
<button class="addDom" >Call Add HTML</button>
<div id="content">
</div>
</body>
</html>
<script src="js/jquery.js"></script>
<script src="js/toastr.js"></script>
<script>
$(document).ready(function(){
$(".alertmsg").click(function() {
alert("Hello World!");
});
$(".addDom").click(function(){
$.get( '/adddom',
function (data) {
// put html into the section
$("div#content").html(data);
})
});
});
</script>
<div>
<h1>Added Via $.html</h1>
<button class="showmsg">click me for jquery</button>
</div>
<script>
$(document).ready(function(){
$(".showmsg").click(function(){
toastr.warning( "Test Warning", 'Warning');
});
});
</script>
<!DOCTYPE html>
<link rel="stylesheet" href="css/toastr.css">
<html>
<body>
<h1>My Main Page </h1>
<button class="alertmsg">click me</button>
<button class="addDom" >Call Add HTML</button>
<div id="content">
<div>
<h1>Added Via $.html</h1>
<button class="showmsg">click me for jquery</button>
</div>
</div>
</body>
</html>
<script src="js/jquery.js"></script>
<script src="js/toastr.js"></script>
<script>
$(document).ready(function(){
$(".alertmsg").click(function() {
alert("Hello World!");
});
$(".addDom").click(function(){
$.get( '/adddom',
function (data) {
// put html into the section
$("div#content").html(data);
})
});
});
</script>
What I'm trying to understand is;
1) Where does my new script code exist?
<script>
$(document).ready(function(){
$(".showmsg").click(function(){
toastr.warning( "Test Warning", 'Warning');
});
});
</script>
is it in memory only and not in the DOM?
2) I can get the warning to show correctly i.e $(".showmsg").click
fires and shows what is expected. So my my script can reference the existing libraries in the DOM which are needed. How does this work?
3) What is the best way to trouble shoot this code if I cannot see it in my browser?
Many thanks!
874
If you really want to append the script to the dom you need to use appendChild() not .html(). link about appendChild
An example of doing this would be
var script = document.createElement( 'script' );
script.type = 'text/javascript';
script.text = 'alert("test");';
$('div')[0].appendChild(script);
Here is a fiddle showing this.
86
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