lovecoding
/
web0715


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .progress-content{
            width: 400px;
            height: 50px;
            border:3px solid black;
            border-radius: 10px;
            position: relative;
            overflow: hidden;
        }
        .progress-inner{
            height: 50px;
            width: 0;
            background-color: blue;
            position: absolute;
            top:0;
            left: 0;
        }
        .progress-text{
            position: absolute;
            top:0;
            left: 20px;
            height: 50px;
            line-height: 50px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="progress-content">
            <div class="progress-inner"></div>
            <div class="progress-text">0%</div>
        </div>
        <button>start</button>
    </div>
    <script>
        var oBtn = document.getElementsByTagName("button")[0];
        var progressInner = document.getElementsByClassName("progress-inner")[0];
        var progressText = document.getElementsByClassName("progress-text")[0];
        var timer = null;
        oBtn.onclick = function(){
            var i = 0;
            timer = setInterval(function(){
                progressInner.style.width = progressInner.offsetWidth + 4 + "px";
                progressText.innerText = i + "%";
                i++
                if(i>100){
                    clearInterval(timer)
                }
            },16)
        }
    </script>
</body>
</html>