<script type="text/javascript">
fn = (a, b) => Math.max(a, b);
document.write(" 5 和 4 的較大值是:"+fn(4, 5)+"<br>");
document.write(" 6 和 3 的較大值是:" +fn(6,3));
</script>
fn = (a, b) => Math.max(a, b);
document.write(" 5 和 4 的較大值是:"+fn(4, 5)+"<br>");
document.write(" 6 和 3 的較大值是:" +fn(6,3));
</script>
我沒有在“case+”這個后面為輸入的數字添加“parseInt” 輸出的結果就是兩個數字合起來；比如輸入5和1，輸出是51； 但是其他算法就都可以正常運行。就是“+”運算符運算的時候出現這個問題
var mynum =new Array(70,80,66,90,50,100,89);//定義數組mynum并賦值
var i;
for(i=0;i<mynum.length;i++)
{
if(mynum[i]<60)
{
document.write("成績不及格，不輸出！"+"<br>");
continue;
}
document.write("成績:"+mynum[i]+"及格，輸出!"+"<br>");
}
var i;
for(i=0;i<mynum.length;i++)
{
if(mynum[i]<60)
{
document.write("成績不及格，不輸出！"+"<br>");
continue;
}
document.write("成績:"+mynum[i]+"及格，輸出!"+"<br>");
}
2020-04-27
我來提交代碼了~
<script>
window.onload = function sub2(){
var btnObj = document.getElementById("btnId");
btnObj.onclick = function(){
sub=5-2;
alert("5和2的差:"+sub);
};
}
</script>
<form>
<button id="btnId">caculate</button>
</form>
<script>
window.onload = function sub2(){
var btnObj = document.getElementById("btnId");
btnObj.onclick = function(){
sub=5-2;
alert("5和2的差:"+sub);
};
}
</script>
<form>
<button id="btnId">caculate</button>
</form>
var a = new Array();
for(var i = 0; i < 3; i++){
a[i] = new Array();
for(var j = 0; j < 6; j++){
a[i][j] = i + j;
}
}
for(var i = 0; i < 3; i++){
document.write("一維:" + i + "<br>");
for(var j = 0; j < 6; j++){
document.write(a[i][j]);
}
document.write("<br>");
}
for(var i = 0; i < 3; i++){
a[i] = new Array();
for(var j = 0; j < 6; j++){
a[i][j] = i + j;
}
}
for(var i = 0; i < 3; i++){
document.write("一維:" + i + "<br>");
for(var j = 0; j < 6; j++){
document.write(a[i][j]);
}
document.write("<br>");
}
let mydate = new Date();
let year = mydate.getFullYear();
let month = mydate.getMonth();
let day = mydate.getDay();
scoreStr 用題目中的.
var scoreArr = scoreStr.split(';');
let score = 0;
for (i = 0; i < scoreArr.length; i++) {
num = scoreArr[i].split(':');
score += parseInt(num[1]);
}
let year = mydate.getFullYear();
let month = mydate.getMonth();
let day = mydate.getDay();
scoreStr 用題目中的.
var scoreArr = scoreStr.split(';');
let score = 0;
for (i = 0; i < scoreArr.length; i++) {
num = scoreArr[i].split(':');
score += parseInt(num[1]);
}
HTML塊：<div><span id = "count">5</span>秒后回到主頁<a target = "_blank" href="javascript:getback()">返回</a></div>
JS塊：var a = 5; var int = setInterval("changeCount()",1000) function changeCount(){ a--;if (a<0) {clearInterval(int);window.history.back()}else{document.getElementById("count").innerHTML = a;} }
JS塊：var a = 5; var int = setInterval("changeCount()",1000) function changeCount(){ a--;if (a<0) {clearInterval(int);window.history.back()}else{document.getElementById("count").innerHTML = a;} }
