<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js
">
</script>
</head>
<body>
<input type="text" />
<button>点击添加数据</button>
</body>
</html>
<script>
Array.prototype.unique3 = function(){
var res = [];
var obj = {};
for(var i = 0; i < this.length; i++){
if(!obj[this[i]]){
res.push(this[i]);
obj[this[i]] = 1;
}
}
return res;
}
var arr = [];
$('button').click(function() {
var val = $('input').val();
arr.push(val);
var result=arr.unique3();
console.log(result);
})
</script>
小石头写的添加重复还要有弹窗提醒：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js
">
</script>
</head>
<body>
<input type="text" class="inputtext" />
<button>点击添加数据</button>
</body>
</html>
<script>
Array.prototype.unique3 = function() {
var res = [];
var obj = {};
for(var i = 0; i < this.length; i++) {
if(!obj[this[i]]) {
res.push(this[i]);
obj[this[i]] = 1;
}
}
return res;
}
var arr = [];
var result = [];
$('button').click(function() {
var val = $('input').val();
if(val.length!=0){
for(var i = 0; i < result.length; i++) {
if(val == result[i]) {
alert('重复了');
}
};
arr.push(val);
result = arr.unique3();
console.log(result);
}
})
</script>