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This article is about JavaScript's ability to determine if a valid keyboard input is valid. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

function checkKey(iKey) {

if (iKey == 32 || iKey == 229) {

return true;

} /* Spaces and exceptions */

if (iKey > 47 && iKey

< 58) { return true; } /*数字*/ if (iKey >

64 && iKey

< 91) { return true; } /*字母*/ if (iKey >

95 && iKey

< 108) { return true; } /*数字键盘1*/ if (iKey >

108 && iKey

< 112) { return true; } /*数字键盘2*/ if (iKey >

185 && iKey

< 193) { return true; } /*符号1*/ if (iKey >

218 && iKey < 223) {

return true;

} /* Symbol 2*/

return false;

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