141 lines
3.1 KiB
Plaintext
141 lines
3.1 KiB
Plaintext
2
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<script>
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function order(a,b,c){
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var sum;
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var str;
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if(a>b){
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sum=a;
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a=b;
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b=sum;
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}
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if(b>c){
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sum=b;
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b=c;
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c=sum;
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}
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if(a>b) {
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sum = a ;
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a = b ;
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b = sum ;
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}
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str= a+"<"+b+"<"+c;
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document.write(str);
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}
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order(5,0,4);
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</script>
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3
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<script>
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function rand() {
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for(i=0;i<4;i++) {
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document.write(parseInt(Math.random() * 10));
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}
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document.write("<br>")
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}
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function start() {
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for(var i=1;i<11;i++ ){
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rand();
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}
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}
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start();
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</script>
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4
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<script>
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var row=Number(prompt("请输入行数"));
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var col=Number(prompt("请输入列数"));
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function start() {
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row,col;
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var str="<table>";
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for(var j=0;j<row;j++){
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str+="<tr>";
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for(var i=0;i<col;i++){
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str+="<td></td>";
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}
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str+="</tr>";
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}
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str+="</table>";
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document.write(str);
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}
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start();
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</script>
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5
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var sum = 0;
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var attr = [12,34,2,5,76];
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for(var i = 0;i < attr.length;i++){
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sum = sum + attr[i];
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}alert(sum);
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6
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var attr = [];
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for(var i = 0;i < 10;i++){
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attr[i] = parseInt(Math.random()*90+10);
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}
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var attr = [69,54,95,47,88,17,42,93,85,67];
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for(var j = 0;j < attr.length-1;j++){
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for(var k = j+1;k < attr.length;k++){
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if(attr[j] > attr[k]){
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var zhong = attr[j];
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attr[j] = attr[k];
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attr[k] = zhong;
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}
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}
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}
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console.log(attr);
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var b = [69,54,95,47,88,17,42,93,85,67];
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for(j = 0;j<b.length;j++){
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for(k = 0;k < b.length-1-j;k++){
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if(b[k] > b[k+1]){
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var temp = b[k];
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b[k] = b[k+1];
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b[k+1] = temp;
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}
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}
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}
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7
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var arr=[1,2,3,4]; //定义数组的值
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function map(arr){ //定义一个函数Map（arr）
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for(var i=0;i<arr.length;i++){ //定义变量i，
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arr[i]=arr[i]*(i+0.3) //在原数组的基础上加30%
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}
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return arr; //返回数组重新循环，直到条件不符合
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}
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console.log(map(arr)); //打印曾加后的数组
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8
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var x = shiJian();
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function shiJian(){
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var mydate = new Date();
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var y = mydate.getFullYear();
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//提取月份:提取的数值 +1即为当前的月份
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var m = mydate.getMonth();
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//提取日期
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var d = mydate.getDate();
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//提取当前时间：几时几分与上下午
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var h = mydate.getHours();
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var fen = mydate.getMinutes();
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var s = mydate.getSeconds();
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var z = y + "-" + (m + 1) + "-" + d + " " + h + ":" + fen + ":" + s;
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alert(z);
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9
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var shuzu = [1,5,4,4,7,6,6];
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quchong(shuzu);
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function quchong(shuzu){
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var attr=[];
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for(var i =0;i<shuzu.length;i++){
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if(attr.indexOf(shuzu[i]) < 0){
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attr.push(shuzu[i]);
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}
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}document.write(attr);
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}
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return z;
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} |