Code example sharing for JS verification input box (letters, numbers, symbols, Chinese)-JS Tutorial-php.cn

Code example sharing for JS verification input box (letters, numbers, symbols, Chinese)

黄舟

Release： 2017-03-24 14:28:40

Original

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This article mainly introduces the method of JS to verify the input input box (letters, numbers, symbols, Chinese). Has very good reference value. Let’s take a look with the editor below

Only English can be entered

<input type="text" onkeyup="value=value.replace(/[^a-zA-Z]/g,&#39;&#39;)">

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Only English can be entered

<input type="text" onkeyup="value=value.replace(/[^\a-\z\A-\Z]/g,&#39;&#39;)"
onkeydown="fncKeyStop(event)" onpaste="return false"
oncontextmenu="return false" />

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Unable to paste, right-click will not pop up the paste menu

Only numbers can be entered:

<input onkeyup="this.value=this.value.replace(/\D/g,&#39;&#39;)"
onafterpaste="this.value=this.value.replace(/\D/g,&#39;&#39;)">

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Only numbers and decimal points can be entered :

<input name="price" type="text"
onkeyup="value=value.replace(/[^\d\.]/g,&#39;&#39;)">

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Only numbers, decimal points, and underscores can be entered:

<input name="price" type="text"
onkeyup="value=value.replace(/[^\d\._]/g,&#39;&#39;)">

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Only English and numbers can be entered:

<input onkeyup="value=value.replace(/[\W]/g,&#39;&#39;) "
onbeforepaste="clipboardData.setData(&#39;text&#39;,clipboardData.getData(&#39;text&#39;).replace(/[^\d]/g,&#39;&#39;))">

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Only Chinese characters can be input:

<input onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,&#39;&#39;)"
onbeforepaste="clipboardData.setData(&#39;text&#39;,clipboardData.getData(&#39;text&#39;).replace(/[^\u4E00-\u9FA5]/g,&#39;&#39;))">

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Input method input is prohibited:

<input type="text" style="ime-mode: disabled">

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Cannot switch input method

Only Chinese, English, numbers, @ symbols and . symbols can be entered:

<input type="text"
onkeyup="value=value.replace(/[^\a-\z\A-\Z0-9\u4E00-\u9FA5\@\.]/g,&#39;&#39;)">

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Cannot be empty:

<input 
onblur
="
if
(this.value.replace(/^ +| +$/g,&#39;&#39;)==&#39;&#39;)alert(&#39;不能为空!&#39;)">

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