朱冠宇python期中考javascript按鈕button事件onchange
js程式碼
const space=' ', slash='/', backslash='\\', cr='\n';function row1(k,m){
for(let i=0; i<k;i++){
for(let ii=0; ii<m; ii++){
for(let j=0; j<k-i-1; j++)
out+=space;
out+=slash;
for(let j=0; j<2*i; j++)
out+=space;
out+=backslash;
for(let j=0; j<k-i-1;j++)
out+=space;};
out+=cr;};};
function row2(k,m){
for(let i=0; i<k; i++){
for(let ii=0; ii<m; ii++){
for(let j=0; j<i; j++)
out+=space;
out+=backslash;
for(let j=0; j<2*k-2*i-2; j++)
out+=space;
out+=slash;
for(let j=0; j<i;j++)
out+=space;};
out+=cr;};};
function abc(){
k = document.getElementById('k').value;
m = document.getElementById('m').value;
n = document.getElementById('n').value;
out ='<pre>朱冠宇\n';
for(let i=0; i<n; i++){
row1(k,m);
row2(k,m);}
out += '</pre>';
document.getElementById('out').innerHTML=out;}
function change(x){
//python的自訂函數def,javascript function
document.body.style.backgroundColor = x.options[x.selectedIndex].text;
}
css程式碼
h1{background-color: purple; color: white; border: 10px solid red; text-align:center; padding: 5px}ul{background-color: green; color: white; font-size: 2em;line-height:1.5}
input{font-size:24px;background-color:rgb(210, 250, 215);}
.spanstyle{font-size:36px;font-weight: bold;}
pre{color:white;background-color:purple;}
#out{background-color:rgb(50,200,50);font-size:36px;}
html程式碼
<SCRIPT SRC='index.js'></SCRIPT><LINK REL ='STYLESHEET' HREF='index.css'>
<h1>朱冠宇輸入參數</h1>
<span class="spanstyle">輸入k</span><input id="k" type="number" value="1" /><br />
<span class="spanstyle">輸入m</span><input id="m" type="number" value="1" /><br />
<span class="spanstyle">輸入n</span><input id="n" type="number" value="1" /><br />
<button onclick="abc()">執行自訂函數</button>
<select id='mySelect' onchange="change(this)">
<option>red</option>
<option>green</option>
<option>blue</option>
<option>orange
</option>
</select>
<h1>重點</h1>
span手掌張開拇指到小指,短橋梁長度。
VSCode是IDE整合開發環境。
CTRL+SHIFT+L一次改全部
Integrated Development Environment
alert內建函數,自訂函數abc
利用id加上syle方法是#id
<h1>朱冠宇輸出結果</h1>
<div id="out"></div>
朱冠宇輸入參數
輸入k輸入m
輸入n
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