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Questions about the use of single and double quotes
Single and double quotes can be used in JavaScript, and they can be used in combination. However, as a rookie of me, but encountered some use of quotation marks.
<body><div style= "border:1px solid red; height:150px;width:150px; "onclick=" Alert ("Test"); id= "Test" >this is a test.</div></body><body><div style= "border:1px solid red; height:150px;width:150px; "onclick=" alert (' Test '); id= "Test" >this is a test.</div></body><body><div style= "border:1px solid red; height:150px;width:150px; "onclick= ' Alert (' Test ') ' id=" test ">this is a test.</div></body><body><div style= "border:1px solid red; height:150px;width:150px; "onclick=" Alert ("Test") ' id= "test" >this is a test.</div></body>PS: You can put the code in the editor, see the changes in the small place font color change!!!
Second, the problem of introducing external JS in
In a generic project, JS, CSS, and HTML are all separate, typically by introducing the SRC attribute of the corresponding element in
Html:
<pre name= "Code" class= "JavaScript" ><body><div style= "border:1px solid blue; height:150px;width:150px; "onclick=" test (); id= "Test" >this is a test.</div></body>
Window.onload=function () {<pre name= "code" class= "JavaScript" >function Test () {alert ("Test");}}Test.js file after modification
function test () {alert ("Test");}Html:
<body><div style= "border:1px solid blue; height:150px;width:150px; " id= "Test" >this is a test.</div></body>
Window.onload=function () {var test = document.getElementById ("Test"), Test.onclick = function () {alert ("Test");}}Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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