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脚本说明:第一步:把如下代码加入＜head＞区域中＜SCRIPT LANGUAGE="JavaScript"＞＜!-- Original: Tomer Shiran＜!-- This script and many more are available free online at --＞＜!-- The JavaScript Source!! --＞＜!-- Beginvar total = 0var play = falsefunction display(element) {var now = new Date()if (!play) {play = truestartTime = now.getTime()}if (now.getTime() - startTime ＞ 20000) {element.checked = !element.checkedreturn} if (element.checked)total elsetotal--element.form.num.value = total}function restart(form) {total = 0play = falsefor (var i = 1; i ＜= 100; i) { form.elements[i].checked = false }}// End --＞＜/SCRIPT＞第二步:把如下代码加入＜body＞区＜CENTER＞Test your skill. How many boxes can you check in 20 seconds?＜/CENTER＞＜SCRIPT LANGUAGE="JavaScript"＞＜!-- Begindocument.write("＜FORM＞＜CENTER＞")document.write('＜INPUT TYPE="text" VALUE="0" ');document.write('NAME="num" SIZE=10 onFocus="this.blur()"＞＜BR＞')document.write("＜HR SIZE=1 WIDTH=40%＞")for (var i = 0; i ＜ 10; i) {for (var j = 0; j ＜ 10; j) {document.write('＜INPUT TYPE="checkbox" ');document.write('onClick="display(this)"＞')}document.write("＜BR＞")}document.write("＜HR SIZE=1 WIDTH=40%＞")document.write('＜INPUT TYPE="button" VALUE="restart" ');document.write('onClick="restart(this.form)"＞')document.write("＜/CENTER＞＜/FORM＞")// End --＞＜/SCRIPT＞
脚本说明:第一步:把如下代码加入＜head＞区域中＜SCRIPT LANGUAGE="JavaScript"＞＜!-- Original: Tomer Shiran＜!-- This script and many more are available free online at --＞＜!-- The JavaScript Source!! --＞＜!-- Beginvar total = 0var play = falsefunction display(element) {var now = new Date()if (!play) {play = truestartTime = now.getTime()}if (now.getTime() - startTime ＞ 20000) {element.checked = !element.checkedreturn} if (element.checked)total elsetotal--element.form.num.value = total}function restart(form) {total = 0play = falsefor (var i = 1; i ＜= 100; i) { form.elements[i].checked = false }}// End --＞＜/SCRIPT＞第二步:把如下代码加入＜body＞区＜CENTER＞Test your skill. How many boxes can you check in 20 seconds?＜/CENTER＞＜SCRIPT LANGUAGE="JavaScript"＞＜!-- Begindocument.write("＜FORM＞＜CENTER＞")document.write('＜INPUT TYPE="text" VALUE="0" ');document.write('NAME="num" SIZE=10 onFocus="this.blur()"＞＜BR＞')document.write("＜HR SIZE=1 WIDTH=40%＞")for (var i = 0; i ＜ 10; i) {for (var j = 0; j ＜ 10; j) {document.write('＜INPUT TYPE="checkbox" ');document.write('onClick="display(this)"＞')}document.write("＜BR＞")}document.write("＜HR SIZE=1 WIDTH=40%＞")document.write('＜INPUT TYPE="button" VALUE="restart" ');document.write('onClick="restart(this.form)"＞')document.write("＜/CENTER＞＜/FORM＞")// End --＞＜/SCRIPT＞
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