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96 lines
1.9 KiB
96 lines
1.9 KiB
8 years ago
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/** Make a node */
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function mk(e) {return document.createElement(e)}
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/** Find one by query */
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function qq(s) {return document.querySelector(s)}
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/** Find all by query */
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function qa(s) {return document.querySelectorAll(s)}
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/** Convert any to bool safely */
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function bool(x) {
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return (x === 1 || x === '1' || x === true || x === 'true');
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}
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function intval(x) {
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return parseInt(x);
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}
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/** Extend an objects with options */
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function extend(defaults, options) {
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var target = {};
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Object.keys(defaults).forEach(function(k){
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target[k] = defaults[k];
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});
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Object.keys(options).forEach(function(k){
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target[k] = options[k];
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});
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return target;
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}
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/** Escape string for use as literal in RegExp */
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function rgxe(str) {
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return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
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}
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function numfmt(x, places) {
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var pow = Math.pow(10, places);
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return Math.round(x*pow) / pow;
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}
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function estimateLoadTime(fs, n) {
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return (1000/fs)*n+1500;
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}
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function msNow() {
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return +(new Date);
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}
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function msElapsed(start) {
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return msNow() - start;
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}
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Math.log10 = Math.log10 || function(x) {
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return Math.log(x) / Math.LN10;
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};
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/**
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* Perform a substitution in the given string.
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*
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* Arguments - array or list of replacements.
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* Arguments numeric keys will replace {0}, {1} etc.
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* Named keys also work, ie. {foo: "bar"} -> replaces {foo} with bar.
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*
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* Braces are added to keys if missing.
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*
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* @returns {String} result
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*/
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String.prototype.format = function () {
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var out = this;
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var repl = arguments;
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if (arguments.length == 1 && (Array.isArray(arguments[0]) || typeof arguments[0] == 'object')) {
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repl = arguments[0];
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}
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for (var ph in repl) {
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if (repl.hasOwnProperty(ph)) {
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var ph_orig = ph;
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if (!ph.match(/^\{.*\}$/)) {
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ph = '{' + ph + '}';
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}
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// replace all occurrences
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var pattern = new RegExp(rgxe(ph), "g");
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out = out.replace(pattern, repl[ph_orig]);
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}
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}
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return out;
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};
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