编写一个javascript函数方法parseQueryString，把url参数解析为一个对象
var url="http://www.taobao.com/index.php?key0=0&key1=1&key2=2"; function parseQueryString(){ var str=url.split("?")[1]; var items=str.split("&"); var result={}; var arr=""; for(var i=0;i<items.length;i++){ arr=items.split("="); result[arr[0]]=arr[1]; } return result; } var obj= parseQueryString(url); console.log(obj);
完成foo()函数的内容，要求能够弹出对话框提示当前选中的事第几个单选框
<html> <body> <script> function foo(){ var radios=document.getElementsByName("radioGroup"); for(var i=0;i<radios.length;i++){ if (radios[i].checked == true) { var n = i + 1; alert("第" + n + "个单选框被点击"); } } </script> <form name="form1" onsubmit="return foo();"> <input type="radio" name="radioGroup"> <input type="radio" name="radioGroup"> <input type="radio" name="radioGroup"> <input type="radio" name="radioGroup"> <input type="submit"> </body> </html>
用js实现，去掉数组中重复的部分
Array.prototype.del=function(){ var a={}; c=[]; for(var i=0;i<this.length;i++){ var b=this[i]; var d=(typeof b)+b; if(a[d]===undefined){ c.push(b); a[d]=1; } } return c; } alert([1,1,2,3,4,5,4,3,2,1].del());
var s = [0,2,3,4,4,0,2]; var o={}; tmp=[]; count=0; for(var i=0;i<s.length;i++){ if(o[s[i]]){ //0[s[i]]判断是s[i]有没有出现过 count++; }else{ o[s[i]]=1; tmp.push(s[i]) } } alert(count);
alert{tmp};
var arr=["123","123","123","123","sfsdf","123","345","123","123","345","456","567","sdc"]; var str = []; for(var i = 0,len = arr.length;i < len;i++){ ! RegExp(arr[i],"g").test(str.join(",")) && (str.push(arr[i])); } alert(str);
js数组中重复的部分
var ary = new Array("111","22","33","111"); var nary=ary.sort(); for(var i=0;i<ary.length;i++){ if (nary[i]==nary[i+1]){ alert("数组重复内容："+nary[i]); } }