本文實(shí)例為大家分享了圖片緩慢放大縮小js實(shí)現(xiàn)代碼，供大家參考，具體內(nèi)容如下
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>圖片的緩慢縮放</title></head><script> window.onload = function(){ var btn_big = document.getElementById("big"); var btn_small = document.getElementById("small"); var pic = document.getElementById("pic"); //緩慢放大 btn_big.onclick = function(){ var width = parseInt(pic.style.width); var i = width; var count = 0; console.log(width); var timer = setInterval(function(){ count++; i++; pic.style.width = i + "%"; if(count == 10 ){ clearInterval(timer); }else if( i > 50){ btn_big.onclick = function(e){ btn_big.onclick = null; }; } },13); }; //緩慢縮小 btn_small.onclick = function(){ var width = parseInt(pic.style.width); var count = 0; if(width == 10){ alert("圖片已最小!!"); return false; } console.log(width); var timer2 = setInterval(function(){ count++; width--; pic.style.width = width +"%"; if(count == 10){ clearInterval(timer2); }else if( width < 10){ btn_small.onclick = null; } },13); } }</script><style> #pic{ width: 20%; }</style><body> <div id="pic" style="width: 20%"> <img src="3.pic.jpg" style="width:100%;"> </div> <div class="scale"> <button id="big">放大</button> <button id="small">縮小</button> </div></body></html>以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持武林網(wǎng)。
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