63 lines
1.7 KiB
JavaScript
63 lines
1.7 KiB
JavaScript
define(function () {
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var setRandomizedInterval = function (func, target, range) {
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var timeout;
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var again = function () {
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timeout = setTimeout(function () {
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again();
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func();
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}, target - (range / 2) + Math.random() * range);
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};
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again();
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return {
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cancel: function () {
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if (timeout) {
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clearTimeout(timeout);
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timeout = undefined;
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}
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}
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};
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};
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var testInput = function (doc, el, offset, cb) {
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var i = 0,
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j = offset,
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input = " The quick red fox jumps over the lazy brown dog.",
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l = input.length,
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errors = 0,
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max_errors = 15,
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interval;
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var cancel = function () {
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if (interval) { interval.cancel(); }
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};
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interval = setRandomizedInterval(function () {
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cb();
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try {
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el.replaceData(Math.min(j, el.length), 0, input.charAt(i));
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} catch (err) {
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errors++;
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if (errors >= max_errors) {
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console.log("Max error number exceeded");
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cancel();
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}
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console.error(err);
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var next = document.createTextNode("");
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doc.appendChild(next);
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el = next;
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j = -1;
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}
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i = (i + 1) % l;
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j++;
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}, 200, 50);
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return {
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cancel: cancel
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};
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};
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return {
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testInput: testInput,
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setRandomizedInterval: setRandomizedInterval
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};
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});
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