90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
/*
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Copyright (c) 2023 by Wade Williams (https://codepen.io/559wade/pen/LRzEjj)
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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$("input[data-type='currency']").on({
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keyup: function () {
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formatCurrency($(this));
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},
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blur: function () {
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formatCurrency($(this), "blur");
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},
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});
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function formatNumber(n) {
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// format number 1000000 to 1,234,567
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return n.replace(/\D/g, "").replace(/\B(?=(\d{3})+(?!\d))/g, ",");
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}
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function formatCurrency(input, blur) {
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// appends $ to value, validates decimal side
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// and puts cursor back in right position.
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// get input value
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var input_val = input.val();
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// don't validate empty input
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if (input_val === "") {
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return;
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}
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// original length
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var original_len = input_val.length;
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// initial caret position
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var caret_pos = input.prop("selectionStart");
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// check for decimal
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if (input_val.indexOf(".") >= 0) {
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// get position of first decimal
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// this prevents multiple decimals from
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// being entered
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var decimal_pos = input_val.indexOf(".");
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// split number by decimal point
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var left_side = input_val.substring(0, decimal_pos);
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var right_side = input_val.substring(decimal_pos);
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// add commas to left side of number
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left_side = formatNumber(left_side);
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// validate right side
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right_side = formatNumber(right_side);
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// On blur make sure 2 numbers after decimal
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if (blur === "blur") {
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right_side += "00";
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}
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// Limit decimal to only 2 digits
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right_side = right_side.substring(0, 2);
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// join number by .
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input_val = left_side + "." + right_side;
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} else {
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// no decimal entered
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// add commas to number
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// remove all non-digits
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input_val = formatNumber(input_val);
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// final formatting
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if (blur === "blur") {
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input_val += ".00";
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}
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}
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// send updated string to input
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input.val(input_val);
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// put caret back in the right position
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var updated_len = input_val.length;
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caret_pos = updated_len - original_len + caret_pos;
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input[0].setSelectionRange(caret_pos, caret_pos);
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}
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