Last active
November 28, 2019 11:07
-
-
Save Visionchen/32678aa85cb11d00aa034126a6988e03 to your computer and use it in GitHub Desktop.
常见
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ### 苹果键盘顶上内容不下来/安卓input被遮住(input框) | |
| ```javascript | |
| 内容1屏 | |
| if(isAndroid){ | |
| var winHeight = $(window).height(); //获取当前页面高度 | |
| $(window).resize(function() { | |
| var thisHeight = $(this).height(); | |
| if (winHeight - thisHeight > 50) { | |
| //当软键盘弹出，在这里面操作 | |
| $('.page-content').css({'height': winHeight + 'px','minHeight':'auto','position':'absolute','bottom':'0'}); | |
| } else { | |
| //当软键盘收起，在此处操作 | |
| $('.page-content').css({'height': '100vh','minHeight':'100vh','position':'relative',}); | |
| } | |
| }); | |
| }else if(isiOS){ | |
| $('#mobile').focus(function () { | |
| window.scrollTo(0,$(window).height()); | |
| }); | |
| $('#code').focus(function () { | |
| window.scrollTo(0,$(window).height()); | |
| }); | |
| $('#mobile').blur(function () { | |
| document.querySelector('#code').scrollIntoView(); | |
| if (document.getElementById('code') != document.activeElement) { | |
| window.scrollTo(0,0); | |
| } | |
| }); | |
| $('#code').blur(function () { | |
| document.querySelector('#code').scrollIntoView(); | |
| if (document.getElementById('mobile') != document.activeElement) { | |
| window.scrollTo(0,0); | |
| } | |
| }); | |
| } | |
| 2 | |
| var u = navigator.userAgent, app = navigator.appVersion; | |
| var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //根据输出结果true或者false来判断ios终端 | |
| //!!双叹号一般用来将后面的表达式转换为布尔型的数据（boolean） | |
| if(isiOS){ | |
| $('.textArea').focus(function () { | |
| window.scrollTo(0,$(window).height()); | |
| }); | |
| $('.textArea').blur(function () { | |
| document.querySelector('.textArea').scrollIntoView(); | |
| window.scrollTo(0,0); | |
| }); | |
| } | |
| ``` | |
| ### 数据中是否存在指定值，存在就删除 | |
| ```javascript | |
| var str = ["a", "b", "c"]; | |
| var index = str.indexOf("a"); | |
| if(index>-1){//大于0 代表存在， | |
| str.splice(index,1);//存在就删除 | |
| } | |
| console.log(str);// ["b", "c"] | |
| ``` | |
| ### 数组对象中是否存在指定值（方法一），存在即删除 | |
| ```javascript | |
| var searchinfo =[ | |
| { key: '999', name: 'zhangsan'}, | |
| { key: '111', name: 'lisi'}, | |
| { key: '222', name: 'wanger'}, | |
| { key: '333', name: 'apple'}, | |
| { key: '444', name: 'orange'}, | |
| ] | |
| for (var i = 0; i < searchinfo.length; i++) { | |
| if ((searchinfo[i].key).indexOf("999") > -1) {//判断key为999的对象是否存在， | |
| index = i; | |
| searchinfo.splice(index, 1);//存在即删除 | |
| } | |
| } | |
| console.log(searchinfo); | |
| ``` | |
| ### 数组对象中是否存在指定值（方法二） | |
| ```javascript | |
| var searchinfo =[ | |
| { key: '999', name: 'zhangsan'}, | |
| { key: '111', name: 'lisi'}, | |
| { key: '222', name: 'wanger'}, | |
| { key: '333', name: 'apple'}, | |
| { key: '444', name: 'orange'}, | |
| ] | |
| var str1 = searchinfo.some(item => item.key =="999"); | |
| console.log(str);//true 存在 | |
| var str2 = searchinfo.some(item => item.key =="121"); | |
| console.log(str);//false 不存在 | |
| ``` | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment