41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
layui.define(['jquery', 'element'],
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function (exports) {
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var $ = layui.jquery;
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var tools = new function () {
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/**
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* @since 防抖算法
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*
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* @param fn 要执行的方法
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* @param time 防抖时间参数
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*/
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this.debounce = function (fn, time) {
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var timer = null
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return function () {
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var arguments = arguments[0]
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if (timer) {
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clearTimeout(timer)
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}
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timer = setTimeout(function () {
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fn(arguments)
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}, time)
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}
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}
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// image 转 base64
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this.imageToBase64 = function (img) {
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var canvas = document.createElement("canvas");
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canvas.width = img.width;
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canvas.height = img.height;
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var ctx = canvas.getContext("2d");
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ctx.drawImage(img, 0, 0, img.width, img.height);
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var ext = img.src.substring(img.src.lastIndexOf(".") + 1).toLowerCase();
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var dataURL = canvas.toDataURL("image/" + ext);
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return dataURL;
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}
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};
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exports('tools', tools);
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})
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