![JS数组[2, 5, 2, 5, 10, 12],如何循环打印 （2, 5, 10, 12） 不要打印重复的值，这个循环怎么写。](/aiimages/JS%E6%95%B0%E7%BB%84%5B2%2C+5%2C+2%2C+5%2C+10%2C+12%5D%2C%E5%A6%82%E4%BD%95%E5%BE%AA%E7%8E%AF%E6%89%93%E5%8D%B0+%EF%BC%882%2C+5%2C+10%2C+12%EF%BC%89+%E4%B8%8D%E8%A6%81%E6%89%93%E5%8D%B0%E9%87%8D%E5%A4%8D%E7%9A%84%E5%80%BC%EF%BC%8C%E8%BF%99%E4%B8%AA%E5%BE%AA%E7%8E%AF%E6%80%8E%E4%B9%88%E5%86%99%E3%80%82.png)
var map = {
‘flammable’: ‘inflammable’,
‘duh’: ‘no duh’
}
$.each(map, function(key, value) {
alert(key + ‘: ‘ + value)
})
2. js里是很灵活的
var A = {a:1,b:2,c:3,d:"hello world"}
for(let k in A) {
console.log(k,A[k])
}
获取查询字符串的上的指定值：function getParam(key, strURL) {strURL = strURL || window.location.search return new RegExp("(^|\\?|&)" + key + "=([^&]*)(\\s|&|$)", "i").test(strURL) ?decodeURIComponent(RegExp.$2.replace(/\+/g, " ")) : ""} // 调用getParam('key', '链接')
