摘要:
function getLength(num){ var count = 0; while(num != 0){ num = parseInt(num/10); count++; } return count; } function getLength(num){ return num.toStri 阅读全文
摘要:
function get(m,n){ var count = 0; for(var i=n; i<=m; i++){ for(var j=n; j<=m; j++){ if(i==j) continue; if( (i*10+j)%2 != 0 ){ console.log(i*10+j); cou 阅读全文
摘要:
function print(n,m){ document.write("<table>"); for(var i=0; i<n; i++){ document.write("<tr>"); for(var j=0; j<m; j++){ document.write("<td>"); docume 阅读全文
摘要:
function checkcode(){ var num = parseInt(Math.random()*9000) + 1000; return num; } function checkcode(){ var num = 0; do{ num = parseInt(Math.random() 阅读全文
摘要:
unction sum(m,n){ var sum = 0; if(m>n){ for(var i=n; i<=m; i++){ sum += i; } } else { for(var i=m; i<=n; i++){ sum += i; } } return sum; } 阅读全文
摘要:
function area(radius){ return Math.PI*radius*radius; } 阅读全文
摘要:
var str = "12345a"; function isNumber(str){ if( str == 0){ return true; } if( str == ""){ } return !!Number(str); } var res = isNumber(str); 阅读全文
摘要:
function compare(a,b,c) { if(a > b) { } } 阅读全文
摘要:
window.onscroll = function(){ var backBtn = document.getElementById("backTop"); backBtn.onclick = function(){ //将滚动距离设为0,则回到顶部 document.documentElemen 阅读全文
摘要:
function calculator(num1,num2,sign){ switch(sign){ case "+" : console.log(num1+num2); break; case "-" : console.log(num1-num2); break; case "*" : cons 阅读全文