1、必须包含小数点
代码语言:javascript复制let regDis = /^(?=0.[1-9]|[1-9].d).{3}$|^([2-9])$/
2、非必须包含小数点
代码语言:javascript复制let regDis = /^[0-9]{1}(.[0-9])?$/
3、判断H5是否在小程序webview打开
代码语言:javascript复制<script type="text/javascript" src="https://res.wx.qq.com/open/js/jweixin-1.3.2.js"></script>
<script>
var ua = navigator.userAgent.toLowerCase();
if(ua.match(/MicroMessenger/i)=="micromessenger") {
//ios的ua中无miniProgram,但都有MicroMessenger(表示是微信浏览器)
wx.miniProgram.getEnv((res)=>{
if (res.miniprogram) {
alert("在小程序里");
} else {
alert("不在小程序里");
}
})
}else{
alert('不在微信里');
}
</script>
4、window.open()跳转被拦截!
通过异步请求获取跳转链接后再进行window.open跳转会被浏览器拦截。
解决方案
代码语言:javascript复制export default {
data() {
return {
jumpUrl: '',
newWin: null // 新窗口的引用
}
},
watch: {
url(newVal, oldVal) {
if(newVal && this.newWin) {
this.newWin.sessionStorage.clear()
this.newWin.location.href = newVal;
this.jumpUrl = '';
this.newWin = null;
}
}
},
methods: {
clickHandle() {
let _this = this;
// 先打开一个空的新窗口,再请求
this.newWin = window.open();
api.get('xxx', params).then(response => {
let data = response.data;
if(data.code === 0 ) {
_this.jumpUrl = data.data.url || '';
}
});
}
}
}
6、数组对象去重
代码语言:javascript复制export function deteleObject(obj) {
var uniques = [];
var stringify = {};
for (var i = 0; i < obj.length; i ) {
var keys = Object.keys(obj[i]);
keys.sort(function(a, b) {
return (Number(a) - Number(b));
});
var str = '';
for (var j = 0; j < keys.length; j ) {
str = JSON.stringify(keys[j]);
str = JSON.stringify(obj[i][keys[j]]);
}
if (!stringify.hasOwnProperty(str)) {
uniques.push(obj[i]);
stringify[str] = true;
}
}
uniques = uniques;
return uniques;
}
代码语言:javascript复制 deteleObject(obj) {
var hash = {};
obj = obj.reduce(function(item, next) {
hash[next.openid] ? '' : hash[next.openid] = true && item.push(next);
return item
}, [])
return obj
},