99 lines
3.4 KiB
HTML
99 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>电容/电阻值转换</title>
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</head>
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<body>
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<h1>电容/电阻值转换工具</h1>
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<label for="typeSelect">选择类型：</label>
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<select id="typeSelect">
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<option value="capacitance">电容</option>
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<option value="resistance">电阻</option>
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</select>
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<br><br>
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<label for="valueInput">输入值：</label>
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<input type="text" id="valueInput" placeholder="输入电容/电阻值" onkeydown="handleKeyDown(event)">
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<button onclick="convertValue()">转换</button>
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<p id="output">转换结果将在这里显示</p>
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<script>
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function cap_namer(value_str) {
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value_str = value_str.toLowerCase();
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if (value_str.includes('u')) {
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base = 1000000;
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} else if (value_str.includes('n')) {
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base = 1000;
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} else if (value_str.includes('p')) {
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base = 1;
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} else {
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throw '错误的值';
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}
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value_flt = parseFloat(value_str);
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inner_flt = value_flt * base;
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if (inner_flt < 10) {
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code = inner_flt.toString().replace('.', '');
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} else {
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code = inner_flt.toString().slice(0, 2) + (inner_flt.toString().length - 4);
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}
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return code;
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}
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function res_namer(value_str) {
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value_str = value_str.toLowerCase();
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if (value_str.includes('k')) {
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base = 1000;
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} else if (value_str.includes('m')) {
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base = 1000000;
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} else if (value_str.includes('g')) {
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base = 1000000000;
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} else if (value_str.includes('r')) {
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base = 1;
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} else {
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throw '错误的值';
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}
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value_flt = parseFloat(value_str);
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inner_flt = value_flt * base;
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if (inner_flt < 1 && inner_flt > 0) {
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inner_flt=inner_flt*10
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code = "0"+"R"+inner_flt.toString().replace('.', '');
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}
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else if (inner_flt < 10 && inner_flt > 1) {
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code = inner_flt.toString().replace('.', '');
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} else {
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code = inner_flt.toString().slice(0, 2) + (inner_flt.toString().length - 2);
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}
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return code;
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}
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function convertValue() {
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const typeSelect = document.getElementById("typeSelect");
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const valueInput = document.getElementById("valueInput");
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const outputElement = document.getElementById("output");
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const valueType = typeSelect.value;
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const inputValue = valueInput.value;
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try {
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let convertedValue;
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if (valueType === "capacitance") {
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convertedValue = "C" + cap_namer(inputValue);
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} else if (valueType === "resistance") {
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convertedValue = "R" + res_namer(inputValue);
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}
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outputElement.textContent = "转换结果：" + convertedValue;
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} catch (error) {
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outputElement.textContent = "错误：" + error;
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}
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}
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function handleKeyDown(event) {
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if (event.key === "Enter") {
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convertValue();
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}
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}
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</script>
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</body>
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</html> |