Merge remote-tracking branch 'origin/lwt'

chx firstCommit
1 changed files with 116 additions and 0 deletions
--- a/calculator.html
+++ b/calculator.html
@ -0,0 +1,116 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
 </head>
 <style>
    body,html{
        height: 100%;
        margin: 0;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    button {
        width: 40px;
        height: 40px;
        font-size: 16px;
        margin-top: 2px;
    }
    #back {
        width: 85px;
        height: 40px;
    }
    #t1 {
        width: 170px;
        margin-bottom: 5px;
        padding: 3px 0px 3px 0px;
    }
    .all {
        border: 1px solid black;
        width: 175px;
        padding:0px 2px 2px 2px;
    }
    p{
        text-align: center;
    }
 </style>
 <body>
    <div class="all">
        <p>计算器</p>
        <div>
            <input type="text" id="t1">
        </div>
        <div>
            <button onclick="cls()" id="C">C</button>
            <button onclick="addStr('%')">%</button>
            <button onclick="del()" id="back">←</button>
        </div>
        <div>
            <div>
                <button onclick="addStr(7)">7</button>
                <button onclick="addStr(8)">8</button>
                <button onclick="addStr(9)">9</button>
                <button onclick="addStr('/')">÷</button>
            </div>
            <div>
                <button onclick="addStr(4)">4</button>
                <button onclick="addStr(5)">5</button>
                <button onclick="addStr(6)">6</button>
                <button onclick="addStr('*')">×</button>
            </div>
            <div>
                <button onclick="addStr(1)">1</button>
                <button onclick="addStr(2)">2</button>
                <button onclick="addStr(3)">3</button>
                <button onclick="addStr('-')">-</button>
            </div>
            <div>
                <button onclick="addStr('.')">.</button>
                <button onclick="addStr(0)" id="zero">0</button>
                <button onclick="calc()" id="equal">=</button>
                <button onclick="addStr('+')">+</button>
            </div>
        </div>
    </div>
    <script>
        function addStr(s) {
            var str = document.getElementById("t1");
            str.value = str.value + s;
        }
        function calc() {
            var str = document.getElementById("t1");
            try {
                var res = eval(str.value);
                if (!isNaN(res) && isFinite(res)) {
                    str.value = res;
                } else {
                    str.value = "错误";
                }
            } catch (e) {
                str.value = "错误";
            }
        }
        function cls() {
            var str = document.getElementById("t1");
            str.value = "";
        }
        function del() {
            var str = document.getElementById("t1");
            var str1 = str.value.substr(0, str.value.length - 1);
            str.value = str1;
        }
    </script>
 </body>
 </html>
Author	SHA1	Message	Date
chx	0f8cb888ad	Merge remote-tracking branch 'origin/lwt'	2 months ago
chx	50d9f1b409	chx firstCommit	2 months ago