function CheckForm(theForm) { if (theForm.keywords.value=="Products name :") { alert('Please input product name!'); theForm.keywords.focus(); return false; } return true; } function OnFocusFun(element,elementvalue) { if(element.value==elementvalue) { element.value=""; element.style.color="#666"; } } //离开输入框时触发事件 function OnBlurFun(element,elementvalue) { if(element.value==""||element.value.replace(/\s/g,"")=="") { element.value=elementvalue; element.style.color="#666"; } }
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